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Sujet: Helicopters of the future / Hélicoptères militaires du futur Jeu 13 Déc - 12:39
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Sikorsky S-97 Raider light attack helicopter
In the 2020s the US military could be flying the fastest rotorcraft in the world — if Sikorsky’s S-97 Raider light attack helicopter and other concepts are successful in their bids for government procurements expected in the next decade.
Sikorsky is pitching a family of helicopter concepts that employ a contra-rotating co-axial rotor and pusher propeller with fly-by-wire technology to achieve a cruising speed in excess of 200kt.
These technologies were developed under Sikorsky’s X2 programme. This high-speed family includes the S-97 Raider light attack helicopter concept, a vertical unmanned aerial system (VUAS) version, and medium utility and medium attack helicopters, analogous to the Sikorsky UH-60 Black Hawk and Boeing AH-64 Apache respectively.
The second effort is the US Army’s Aerial Armed Scout (AAS) information collation and assessment activity, managed by its Program Executive Office Aviation, based at the Redstone Arsenal in Alabama. Today the Bell OH-58 Kiowa Warrior carries out the US Army’s armed aerial scout mission.
The S-97 Raider is Sikorsky’s submission for AAS. Flown by two pilots, the machine carries Hellfire missiles, 2.75in rockets and has 0.5in and 7.62mm calibre guns. With a maximum gross weight of 10,495lb including an internal auxiliary fuel tank, the S-97 is expected to have a range of 570km and an endurance greater than 2.7 hours with a cruising speed of over 200kt. The Raider utilises an eight-blade design, with four on each rotor, for ‘smoother flight and lower vibration’, according to Sikorsky information, and is powered by a 2,600hp engine. The Raider, Sikorsky also admits, may ‘look slightly different’ compared to the concept images and the mock-up.
First flight for the first Raider prototype is expected in 2014, with a second demonstrator flying six months later. Mr. Engebretson from Sikorsky explained that 2014 was the target because the company believes the US Army will start a procurement process with a request for proposals by that date. However, there will be no mission systems on board the prototypes in 2014, and they will instead serve to demonstrate the design and aerodynamic capabilities of the airframe and propulsion systems. The first prototype will become a Sikorsky test asset. The second will demonstrate X2 technology to the military.
The aircraft’s preliminary design review took place in mid-August 2011 and there were ‘no surprises’ according to Engebretson. The initial fabrication of components will start this year, with construction of the two prototypes planned for 2013. Sikorsky is building these prototypes with its own money and is putting together a team of partners. Aurora Flight Sciences has announced it is part of the Raider team. It is to design and build the prototype airframes. Media have also reported that General Electric Aviation is to provide the 2,500 to 3,000shp class CT7-8 engine for the Raider prototypes. The engine is also used in Sikorsky’s S-92 and MH-60M helicopters. In helicopter mode, with the pusher propeller idle, Sikorsky is claiming its co-axial rotor produces half the noise of a Boeing AH-6 Little Bird or Kiowa Warrior. This claim is based on noise levels recorded from a lOOkt flight with the X2 technology demonstrator.
Engebretson would not say who the other team members are, but he expects all the partners to be announced once all the contracts are signed. ‘We still have a couple of companies to negotiate with’, Sikorsky’s AAS programme director explained. The company declines to give a figure for the development cost of the Raider but says it will amount to ‘multiples’ of the $50 million spent on the X2.
As well as the Raider, Sikorsky has submitted other ‘options’ for AAS, but they declined to say what in size from light armed reconnaissance to heavy attack’. Asked if that range would mean Sikorsky was also pitching its medium attack concept, Engebretson said, ‘large attack would be overkill for something that is to do the job done by the Kiowa [Warrior]‘, indicating that it wasn’t.
Engebretson preferred to describe the company’s four concepts as helicopter missions to which X2 demonstrator technology can be applied. The VUAS version could be a candidate for the US Air Force’s expected Follow-On Unmanned Aircraft System acquisition. The DoD is expecting the USAF to have about 100 of the F/O UAS by 2021, with operations beginning in 2018. The F/O UAS is viewed as a successor to the MQ-9 Reaper. With its 200kt-plus cruise capability, the VUAS would also be applicable to the US Marine Corp’s Group 4 UAS, which is to have surveillance and strike capabilities. The DoD is planning for the latter to become operational in 2019.
Sikorsky’s medium utility and attack concepts are part of ongoing work the company is undertaking for DoD-funded studies. It has a contract for what is termed Joint Multi Role or JMR. The JMR is part of the DoD’s FVL effort. Engebretson explained that, for Sikorsky, JMR is focused on the medium-class aircraft because it represents the ‘largest portion of the fleet’, namely Black Hawks and Apaches. The requirements made public so far for JMR are a minimum cruise speed of 170kt, with a goal of up to 300kt, a payload capacity of up to 20,000lb or up to 24 passengers, and a range of over 400km. A 2017 technology demonstration has been proposed for JMR.
‘Only X2 can give the high performance and preserve all of the helicopter attributes, efficient low-speed flight and hot and high performance’, Engebretson argued, comparing the X2 technologies with compound and tilt-rotor designs. The DoD-funded Piasecki Aircraft X-49A was a compound helicopter. With a modified Sikorsky SH-60F Seahawk airframe, it had a wing and a tail-mounted vectored-thrust ducted propeller. It flew in 2007. However, the tilt-rotor Engebretson refers to is the Bell Boeing V-22 Osprey. Comparing the X2 concepts to the Osprey, Engebretson said that only the X2 had the ‘longer range and higher speed’ capability that the V-22 offers, while also keeping all the ‘helicopter attributes.’
However, Sikorsky faces competition from another contra-rotating, twin-rotor, pusher-propeller vehicle, the OH-58D AVX. This is the proposal from Fort Worth, Texas-based AVX Aircraft. It is a variant of the in-service Bell OH-58D Kiowa Warrior, and AVX’s founders are former Bell engineers.
Busy promoting X2 technology for US government vertical lift needs, Sikorsky is not yet in a position to sell the co-axial rotor, pusher-propeller technology abroad. It hasn’t got clearance yet to talk in detail about X2 concepts with foreign governments but Engebretson said they had ‘started to talk to the Department of State’ about getting export approval.
For now, the Armed Aerial Scout will be the first test for the X2′s contra-rotating coaxial rotor and pusher-propeller technology and its S-97 Raider concept. If it wins, the tail rotor, at least, could become a thing of the past for US military rotorcraft.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 28 Nov - 17:06
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 9 Déc - 12:17
Citation :
Sikorsky's S-97 Raider will not be airborne until 2015
Sikorsky has chosen prudence over spectacle and delayed the first flight of its S-97 Raider prototype until 2015.
The company, which has invested more than $150 million of internal funding to develop the coaxial rigid-rotor vertical-lift platform, originally planned for it to fly before then end of 2014, but has yet to begin ground testing in preparation for the aircraft’s maiden flight.
Doug Shidler, who headed the Raider project before taking the helm of the company’s joint multi-role development effort, tells Flightglobal there is no particular issues holding the programme back.
“We are going through several lab ground tests right now and we are planning to get into aircraft ground run here in the next couple of weeks,” he says. “As with any development program and first-of-type, there are discoveries. We haven’t had too much discovery, nothing that is insurmountable. We’re making some really good progress in getting the aircraft set for doing its ground runs.”
Raider uses coaxial rotors for vertical lift and a tail propeller for forward thrust. The combination allows for flight characteristics that are physically impossible for existing rotorcraft designs. There is no programme of record within the US military for the aircraft, though the US Army has been monitoring the development effort as it looks to eventually replace its existing, and aging, helicopter fleet.
A transmission system testbed is being built in parallel with the Raider, of which there will be two flying prototypes. The first is designed specifically for the flight test phase. The second will be a demonstration aircraft that will travel and be flown for prospective customers.
The fuselage for Raider II is complete and the remaining parts have been manufactured and delivered. Construction of the second aircraft will begin in early 2015, he says.
Ground runs are scheduled to begin this month, he says. Data gathered while the aircraft remains tethered to the ground will be used to inform flight testing, which should begin in early 2015.
“We were targeting flying by the end of the year,” he says. “It is not any one particular thing or any issue. It’s the nature of development and pulling the first of type together. We’re not rushing it, we are making sure we do it in a very judicious fashion to make sure we are getting into the air safely.”
Army officials desire helicopters that can fly higher, faster and farther than current designs. The Raider is being billed as a potential armed aerial scout or for use by special operations forces.
It was designed to carry more than 4,990kg (11,000lb), or six troops plus crew. With external weapons mounted, Sikorsky says it will fly at least 220kt (407km/h). Unarmed it will fly at up to perhaps 270kt, but S-97 chief engineer Andy Bernhard will not specify how fast they intend to fly it during testing.
Raider was announced, designed and built in four years based on the company's experiences with the X2 concept demonstrator. Raider brings that aircraft's technology into a practical aircraft that can demonstrate real-world mission capabilities.
In partnership with Boeing, Sikorsky plans to scale up Raider’s compound, rigid coaxial rotor configuration into a platform that will satisfy the army’s requirement for the joint multirole technology demonstration (JMR-TD). That programme will validate technologies for the eventual future vertical lift (FVL) platform, which is seeking three classes of helicopter – medium, then light and heavy – to eventually replace all the service’s vertical lift aircraft. Sikorsky and Boeing have dubbed their JMR demonstrator the SB-1 Defiant.
Sikorsky has built fly-by-wire aircraft before and gained experience with coaxial rotors with the X2. Still, as a clean-sheet design with novel propulsion and lift configurations, the Raider has presented unique challenges, says Steve Engebretson, Sikorsky’s director of military programme marketing.
“The amount of data we have on this configuration is relatively limited,” he says. “To quote one of our test pilots, we’re going to learn something from the aircraft from the first time he picks it up off the ground. Every time we spin this rotor, we are probably going to learn something new about how it operates.”
When Raider does get airborne, the company plans to dive directly into substantive testing, Shidler says. First flight is planned to last about 1h, he says.
“We don’t want to just pick the wheels off the ground and get the glamour shot and put them back down again,” he says. “We’re all about making sure we have productive flight testing.”
http://www.flightglobal.com
_________________ Le Prophéte (saw) a dit: Les Hommes Les meilleurs sont ceux qui sont les plus utiles aux autres
jf16 General de Division
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Jeu 5 Fév - 15:50
Le S-97 Raider de Sikorsky a fait un pas de plus vers son premier vol, initialement prévu à la fin de 2014. Le constructeur a annoncé, le 4 février, le début des essais au sol du premier prototype à West Palm Beach (Floride). C’est la première fois que l’appareil est testé dans une configuration entièrement équipée.
Il s’agit de vérifier le bon fonctionnement du système de propulsion, de la transmission, du système de contrôle des rotors et de l’interface pilote-machine. Ces essais font suite à une première phase de qualification de logiciel, ainsi que des essais de fatigue et des tests de la boîte de transmission principale.
Sikorsky annonce également le début imminent de l’assemblage final du deuxième prototype du S-97, suite à la livraison de la cellule par Aurora Flight Sciences au mois de janvier dernier. La sortie d’usine du premier prototype a eu lieu le 2 octobre dernier.
Motorisé par un YT706 de General Electric (2 600 ch), le Raider a une longueur hors tout de 11 m et doit transporter 6-7 passagers à environ 400 km/h. Il reprend la formule « hybride » qui a fait le succès du concept mis au point avec le démonstrateur X2, à savoir un rotor principal contrarotatif — qui permet de s’afranchir du rotor de queue anti-couple — associé à une hélice propulsive montée à l’arrière de l’appareil.
Première application concrète de cette technologie, le Raider devrait marquer un véritable saut en termes de vitesse, d’agilité et de performances à haute altitude par rapport à la génération actuelle d’hélicoptères.
Avec la formule X2, Sikorsky vise la succession du Bell OH-58 Kiowa Warrior, ainsi que le futur programme JMR-TD (Joint Multi-Role-Technology Demonstrator) pour remplacer le Black Hawk. Pour ce dernier programme Sikorsky a fait équipe avec Boeing pour proposer le SB-1 Defiant.
Sikorsky vient d'annoncer qu'il débutait l'assemblage final de son hélicoptère à rotor coaxial contrarotatif rigide, le S-97 Raider, dont le programme a été lancé en octobre 2010. L'objectif était alors de murir le programme X2 et de développer un appareil répondant aux besoins de reconnaissance armée et d'opérations spéciales de l'US Army.
Si le premier Raider a été construit en qualité d'appareil uniquement dédié aux essais, le second S-97 servira de démonstrateur, afin d'offrir à la clientèle la capacité d'apprécier la technologie X2. Les essais en vol du second prototype du S-97 devraient débuter en 2015, suivis par des vols de démonstration qui commenceront dès 2016. L'appareil est capable d'atteindre une vitesse supérieure à 220 kts (407 km/h).
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Sam 7 Mar - 13:07
Citation :
Sikorsky S-97 RAIDER™ Team Begins Final Assembly of Second Aircraft
March 04,2015 WEST PALM BEACH, Florida - Sikorsky Aircraft Corp., a subsidiary of United Technologies Corp. (NYSE: UTX), today announced the start of final assembly of the second S-97 RAIDER™ helicopter at the company’s Development Flight Center.
Along with a team of industry suppliers, Sikorsky is developing two RAIDER™ prototypes to demonstrate the revolutionary new capabilities in improved maneuverability and flight speed. The RAIDER is a rigid coaxial rotor prototype aircraft ideally suited for armed reconnaissance and a spectrum of special operations missions.
“Our teammates on the RAIDER program have been answering our challenge to deliver a military helicopter with capabilities never seen before,” said Mark Hammond, S-97 RAIDER Program Manager. “As a team, we’ve already demonstrated the power of working together to develop a high-performance and affordable next-generation aircraft. Starting assembly of the second prototype is a great milestone for the program.”
Sikorsky launched the S-97 RAIDER program in October 2010 with the objective of maturing the X2™ rotorcraft design and offering a helicopter to meet U.S. Army armed reconnaissance and special operations needs. The company developed the first RAIDER prototype as a test aircraft, built to prove the military application of Sikorsky’s X2 Technology™. The second prototype will serve as a demonstrator aircraft, offering key customers an opportunity to experience the capabilities of X2 Technology first hand. Sikorsky is on track to complete final assembly and test flights of the second RAIDER prototype in 2015, followed by demonstration flights beginning in 2016.
The RAIDER program is 100 percent industry funded. The second RAIDER prototype entered final assembly with the delivery of the all-composite fuselage from RAIDER supplier, Aurora Flight Sciences of Manassas, Virginia.
“Aurora’s expertise in composite airframes and rapid prototyping was a natural fit for the S-97 RAIDER program, and was a natural fit to our core competency. We value the cohesion of the team in the design, manufacturing and test elements of the program,” said Mark Cherry, President and Chief Operating Officer, Aurora Flight Sciences. “We are thrilled to be part of the team that’s reinventing the helicopter and putting it in the hands of the warfighters.”
Sikorsky’s Collier-Award winning X2 Technology demonstrator showed the world its exciting technologies and set the stage for launching the S-97 RAIDER program. As part of the portfolio of Sikorsky Innovations, Sikorsky Aircraft’s technology development organization, the RAIDER features a multi-mission configuration, capable of performing air assault or armed reconnaissance/light attack missions. The coaxial counter-rotating main rotors and pusher propeller provide cruise speeds beyond 220 knots (253 mph).
Sikorsky Aircraft Corp., based in Stratford, Connecticut, is a world leader in helicopter design, manufacture and service. United Technologies Corp., based in Hartford, Connecticut, provides high technology products and services to the building and aerospace industries.
This press release contains forward-looking statements concerning opportunities for development, production and sale of helicopters. Actual results may differ materially from those projected as a result of certain risks and uncertainties, including but not limited to changes in government procurement priorities and practices, budget plans, availability of funding and in the type and number of aircraft required; challenges in the design, development, production and support of advanced technologies; as well as other risks and uncertainties, including but not limited to those detailed from time to time in United Technologies Corporation’s Securities and Exchange Commission filings.
_________________ Le Prophéte (saw) a dit: Les Hommes Les meilleurs sont ceux qui sont les plus utiles aux autres
jf16 General de Division
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Lun 9 Mar - 13:43
Citation :
Sikorsky S-97 RAIDER Begins Bladed Ground Runs
Ajoutée le 9 mars 2015
February 4, 2015 marks the start of bladed ground testing, a major milestone, for the S-97 RAIDER program. During the ground runs phase, the S-97 RAIDER team is testing the first of two aircraft prototypes as a completed system for the first time. The team will perform initial ground tests with the aircraft tied down and will focus on verifying correct operation of the propulsion system, drive train, rotor control system and pilot-vehicle interface.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 22 Mai - 20:42
Citation :
VIDEO: Boeing confident in SB-1 design for Pentagon's FVL
By: James DrewPhiladelphia Source: Flightglobal.com
Boeing is banking on its partnership with Sikorsky on the SB-1 Defiant demonstrator to help usher in the next generation of rotorcraft for Army but still anticipates that its long-serving AH-64 Apaches and CH-47 Chinooks will continue to dominate the skies out to 2060.
The SB-1 Boeing and Sikorsky are developing for the Army’s Joint Multi-Role (JMR) technology demonstration programme is expected to fly in the third quarter of 2017 at West Palm Beach in Florida.
The propeller-pushed, lift-offset coaxial aircraft is being developed alongside the Bell Helicopter-Lockheed Martin V-280 Valor, a tilt-rotor design, to inform way ahead in the medium-weight class of the Army’s Future Vertical Lift programme. If successfully validated in testing, a Defiant or Valor type of rotorcraft would start replacing US Apache and Black Hawk helicopters in the 2030s.
The company released a new video this week showing how the Defiant is expected to operate.
Speaking at press tour at Boeing’s rotorcraft manufacturing facility in Philadelphia, the company’s director of future vertical lift at Phantom Works, Pat Donnelly, says the Army wants a speedy, multi-purpose aircraft that flies faster and farther than a traditional helicopter and carries more payload, but must “operate like a helicopter and cost like a helicopter.”
“We are helping the government decide what they want for future vertical lift-medium,” Donnelly says. “They’ve put together a requirements list that’s exhaustive. What we’re doing in our SB-1 Defiant is helping them understand what the implications of any one of those design features does to the aircraft.”
The SB-1 is designed with stiff, counter-rotating blades mounted close together to reduce drag. The blades will slow as the aircraft is propelled to speeds of more than 250kt, roughly 90kt faster than a UH-60 Black Hawk. Donnelly says the propeller reverses pit to slow the aircraft and even act as a parachute.
“There are advantages to the tilt-rotors, there’s advantages to the coaxial,” he says. “A tilt-rotor is a more mature platform, but we are relying heavily on what Sikorsky has done in this environment. They flew the X-2 to 250kt about four or five years ago, and they’re going to fly their Raider.”
Boeing and Lockheed are 50-50 joint partners on the SB-1 programme, which will benefit from Lockheed’s separate development of the S-97 Raider, also a rigid coaxial rotorcraft prototype. The Raider conducted its first flight this week and is built to cruise at 240kt.
“We’re pursuing our vehicle in our [coaxial] configuration because we believe it buys helicopter capability as well as speed,” Donnelly says. “The focus of our aircraft is its agility at low speeds like a conventional helicopter. We believe for the requirements as specified a couple of years ago, this configuration is the best.”
At an earlier press briefing, Boeing said its CH-47 Chinooks and AH-64 Apaches will remain in production through 2020 at least, depending on future sales. The Army expect to keep flying both aircraft types through 2060, by which time its Future Vertical Lift programme is expected to deliver a replacement in both mission areas.
There are approximately 850 Chinooks currently in operation globally, and Boeing has delivered more than 2,100 Apaches since their introduction in 1984. The company says the US government will need approximately 4,000 future vertical lift platforms in the future to replace its legacy helicopter fleets.
“We fly in 2017, and [we’re] probably flying for about 1 year,” Donnelly says, noting that the Army will consider the SB-1 and V-280 designs in an analysis of alternatives before publishing its final medium-class Future Vertical Lift requirements document. Developing a heavy-lift platform to replace the Chinook is a longer-term priority for the Army.
In addition to its Joint Multi-Role programme, Boeing hopes to develop a next-generation vertical lift platform based off its Phantom Swift, a ducted fan tilt-rotor aircraft.
Donnelly says Phantom Swift is designed to be much more efficient in hover than even the SB-1, and reach cruise speeds of 300kt to 400kt.
Boeing expects to complete its preliminary design later this year before the US Defense Advanced Research Projects Agency selects one of four competing aircraft designs to carry forward. Donnelly says the aircraft will be autonomous but that is not the main focus of the competition.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 22 Mai - 20:52
Citation :
S-97 Raider makes debut test flight
By: Stephen TrimbleWashington DC Source: Flightglobal.com
Sikorsky has completed a first flight of the self-funded S-97 Raider at the company's flight test facility in West Palm Beach, Florida, to open a year-long test and demonstration phase for the high-speed, compound helicopter proposed for light attack, scout and special utility missions.
The S-97’s coaxial-compound, rigid-rotor configuration will eventually be tested at speeds up to 220kt – or about 50kt faster than the speed limit of most conventional helicopters – but the maiden flight on 22 May focused on exploring the low-speed envelope in a degraded mode of the fly-by-wire system.
Sikorsky chief pilot Bill Fell and co-pilot Kevin Bredenbeck completed three take-offs and landings during the hour-long sortie and evaluated the aircraft’s handling in all four cardinal directions at speeds up to 10kt.
“It was quite the aggressive first flight for a helicopter,” says Bredenbeck, who piloted the X2, the S-97’s proof-of-concept demonstrator.
Sikorsky
Sikorsky launched the S-97 project in 2010 after completing a series of record-breaking demonstration flights of the X2.
A 48-month technology demonstration programme was extended by more than four months to complete several new technologies. The S-97 is configured as a testbed for a variety of development projects within Sikorsky, including components made through additive manufacturing, a low-fastener-count approach to structural assembly, and new composite materials.
“The S-97 is a testbed for a lot new technology and some of those took a little bit longer,” says Sikorsky vice-president of research and engineering Mark Miller.
The S-97 flies faster than most helicopters because it replaces a tail-rotor with a pusher propeller, which was left deactivated for the first flight test. The counter-torque function of the tail rotor is replaced with a counter-rotating, coaxial rotor system that provides vertical thrust for takeoff and landing.
The rigid blades of the coaxial rotor system provide another benefit over a conventional Sikorsky helicopter.
“You have a phenomenal amount of control power with this very rigid rotor,” Fell says. “There is no lag. The aircraft responds immediately to your control input.”
The 5t-class S-97 is part of a wave of industry investment in high-speed technology.
The Bell Boeing V-22 Osprey now flies faster than 260kt and land vertically using a tiltrotor configuration. Bell Helicopter is currently developing the V-280 Valor tiltrotor demonstrator with Lockheed Martin.
The V-280 is competing against a Sikorsky-Boeing compound helicopter design based on same X2 technology as the S-97 with the 13.5t-class SB-1 Defiant.
The V-280 and SB-1 will perform a series of flight tests to validate the high-speed technology under the army’s joint multi-role technology demonstrator (JMR-TD) programme.
Both aircraft designs are expected to compete for a follow-on acquisition programme called Future Vertical Lift, which initially aims to replace the army’s Sikorsky UH-60 Black Hawk and Boeing AH-64 Apache fleets with a single, high-speed rotorcraft.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Sam 23 Mai - 16:06
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 3 Juil - 22:51
Citation :
Bell sees V-280 Valor as common attack-utility platform
By: James Drew Washington DC
Bell Helicopter and Lockheed Martin’s third-generator tiltrotor aircraft demonstrator, the V-280 Valor, might still be under construction for the US Army, but already the future vertical lift (FVL) contestant is morphing into a mid-weight, utility-attack platform.
Those attending a land warfare exposition by the Association of the United States Army in October are likely to see a V-280 mock-up on display as a utility platform one day and an attack variant the next. And, perhaps on the third day it will transform again into a medical evacuation platform.
Despite army desires to build two separate, specialised vertical-lift platforms to start replacing the Sikorsky UH-60 Black Hawk and Boeing AH-64 Apache in the 2030s, Bell thinks both missions could be performed by one identical or near-identical rotorcraft based on the Valor design.
Bell Helicopter
Chris Gehler, Bell’s director of global business development for advanced tiltrotor systems, told Flightglobal in a recent interview that the V-280 has the potential to be both a troop carrier and gunship when outfitted with different payloads, and the company is already in discussions with the US Marine Corps about the design.
“We already know the Marine Corps would like to have one aircraft replace utility and attack,” Gehler explains. “We’ve been working with them on developing an attack variant of the V-280 that could be – whether it’s wholly attack or one that can be interchangeable back between utility and attack – if not the same airframe, very identical.”
The concept of having one platform seems like a good idea on paper, and could potentially save billions of dollars by buying common parts, engines, drives and rotor systems. But the army appears unconvinced and says it wants distinct platforms for each mission.
“The medium category is going to be two aircraft with two capability sets,” Maj Gen Michael Lundy, who heads the Aviation Centre of Excellence, told BreakingDefense earlier this year. “We’re not going to build a sub-optimised aircraft."
Still, Bell thinks an AV-280 concept might gain traction, and it plans show off its utility and attack configurations on different days at AUSA. The company already builds attack and utility derivatives of the UH-1 Huey for the USMC (the AH-1Z Viper and UH-1Y Venom, pictured below), and recently demonstrated forward-firing rockets and missiles on the Bell Boeing V-22 tiltrotor.
Bell Helicopter
Gehler says tiltrotors “can be very capable attack platforms” in cruise and in hover, and the V-280’s new rotor design allows it to have side doors for troops to quickly mount and dismount. Bell and Lockheed are already looking to put common launch tubes on the V-280 that can launch rockets, missiles and even small unmanned air vehicles forward or aft with no rotor interference.
“When it’s in forward flight and cruise mode with the rotors forward, it’s still able to do forward-firing weapons,” he says. “We’ve got weapons bays that can open up and fire [Lockheed AGM-114] Hellfires from the main fuselage.”
The Bell-Lockheed Valor and Boeing-Sikorsky SB-1 Defiant – a next-generation propeller-pushed, coaxial rotor design (below) – were downselected last year for the army’s joint multi-role technology demonstrator programme, which runs through 2019. This will help to inform its FVL requirements, and the two examples are due to fly by the third quarter of 2017.
Boeing
FVL, although not currently a programme of record, is a joint programme lead by the army that is meant to usher in the next-generation of rotorcraft for the services by the mid-2030s. The Pentagon plans to make a formal FVL materiel development decision in October 2016.
Even though FVL has been a topic of considerable discussion and debate for some time now, there is currently no funding, no contracts, nor requests for proposals. The general assumption is that a future aircraft must fly further, faster and in higher and hotter conditions than today’s helicopters.
There are potentially five aircraft categories: light, medium-light, medium, heavy and ultra. The greatest demand is in the medium category, which the two JMR teams are focused on. Bell doesn’t anticipate much change between the “surrogate requirements” for its full-scale demonstrator and the final FLV list.
Spirit AeroSystems a annoncé avoir assemblé le premier fuselage du convertible lié au programme JMR-TD (Joint Multi-Role Technology Demonstrator). Le fuselage a été conçu et construit dans l'usine de prototypage rapide de Wichita, dans le Kansas, aux Etats-Unis, en l'espace de 22 mois. Elément en composite, il est actuellement préparé pour être envoyé à l'usine Bell d'Amarillo pour l'assemblage final.
Le programme JMR-TD, mené par l'US Army, précède celui du département de la défense (DOD), baptisé Future Vertical Lift, dont l'objet est de remplacer 2 000 des 4 000 hélicoptères de milieu de gamme utilitaires et d'attaque. Le Bell V-280 devrait effectuer son premier vol au cours du second trimestre de l'année 2017.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 13 Oct - 22:41
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 22 Jan - 19:02
Citation :
22/01/2016
Le Bell V-280 « Valor » volera en 2017 !
Bell Helicopter est sur la bonne voie pour mener le premier vol de son aéronef à rotors basculants V-280 « Valor » l'année prochaine.
Le premier prototype de démonstration, dont l’assemblage a débuté au sein de l’usine de production d’Amarillo au Texas, avance normalement selon l’avionneur. Le processus pour commencer l'accouplement de tous les composants et systèmes de l’aéronef est désormais en bonne voie avant son vol inaugural prévu en 2017.
Le Bell V-280 «Valor» dont le design a été présenté pour la première fois le 10 avril 2013, lors de l'Army Aviation Association of America Annual Professional Forum and Exposition à Forth Worth au Texas. Le V-280 est un aéronef multi-rôle susceptible de répondre au programme «Vertical Lift Program» du département de la Défense. L'armée américaine et le ministère de la Défense sont en effet, à la recherche d’un hélicoptère capable à l’avenir de voler à une vitesse de 230 nœuds, en lieu et place des 140 actuels.
Le concept du V-280 «Valor» est basé sur la gamme des «tilt-rotor» de troisième génération, fortement inspiré du V-22, mais légèrement plus petit. Une des grosses différences avec le V-22 est que les moteurs du V-280 seront fixes et ne pivotent pas avec le rotor, ce qui réduit la complexité et le nombre de pièces mobiles.
Le Bell V-280 «Valor» à rotors basculants doit offrir selon son concepteur, les plus hauts niveaux de maturité et de préparation technique. Le Bell V-280 aura la capacité d'effectuer une multitude de missions avec une vitesse inégalée avec une grande agilité.
Photos : La maquette grandeur nature du V-280 « Valor » @ Bell Helicopter
Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Lun 28 Mar - 14:12
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Dim 24 Avr - 19:41
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24/04/2016
Assemblage final du V-280 « Valor » !
Bell Helicopters procède à l’assemblage final du premier prototype du démonstrateur V-280 « Valor » au sein des installations de ses situées à Amarillo au Texas.
La société Spirit AeroSystems a livré le fuselage du V-280 à Amarillo à partir de son usine de Wichita au Kansas, l'an dernier. Les deux nacelles destinées à la motorisation, construites par Israel Aerospace Industries (IAI) ont été accouplées sur l'aile, qui ensuite a été installée sur le fuselage de l’aéronef.
Le Bell V-280 «Valor» a été présenté pour la première fois le 10 avril 2013, lors de l'Army Aviation Association of America Annual Professional Forum and Exposition à Forth Worth au Texas. Le V-280 est un aéronef multi-rôle susceptible de répondre au programme «Vertical Lift Program» du département de la Défense. L'armée américaine et le ministère de la Défense sont en effet, à la recherche d’un hélicoptère capable à l’avenir de voler à une vitesse de 230 nœuds, en lieu et place des 140 actuels.
Le concept du V-280 «Valor» est basé sur la gamme des «tilt-rotor» de troisième génération, fortement inspiré du V-22, mais légèrement plus petit. Une des grosses différences avec le V-22 est que les moteurs du V-280 seront fixes et ne pivotent pas avec le rotor, ce qui réduit la complexité et le nombre de pièces mobiles.
Le Bell V-280 «Valor» à rotors basculants doit offrir selon son concepteur, les plus hauts niveaux de maturité et de préparation technique. Le Bell V-280 aura la capacité d'effectuer une multitude de missions avec une vitesse inégalée avec une grande agilité.
Le premier vol prévu pour 2017 et l'entrée en service opérationnel de l'appareil, s'il est sélectionné, interviendra dans le courant de 2020.
Spécifications de l’appareil :
Vitesse de pointe de 280 nœuds
Autonomie maximum : 2100 nm
Autonomie en mission : 500-800 nm
Contrôles de vol fly-by-wire à triple redondance
Trains rétractables
Deux portes latérales de 1,80 m de largeur
Photos : 1 Assemblage du premier fuselage du V-280 2 Maquette du V-280 @ Bell Helicopter
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Sam 4 Juin - 17:23
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Jeu 14 Juil - 20:31
Citation :
Farnborough 2016: V-280 comes to the UK (video)
14th July 2016 - 14:00 by Grant Turnbull & Gabriela Somarriba Rocha in Farnborough
Shephard spoke to Bell Helicopter about the arrival of its V-280 Valor mock-up to UK shores, the first time it has made an appearance at the show.
Currently, the V-280 Joint Multi Role Technology Demonstrator (JMR-TD), a US Army-led project, is approximately 60% built out in Amarillo, Texas. In April this year, Bell Helicopter coupled the wing and nacelles to the aircraft fuselage.
Programme officials are hopeful for a restrained ground run by the aircraft in the first part of 2017. In addition, the first flight of the tiltrotor is scheduled for September 2017.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Ven 12 Aoû - 17:22
Citation :
12/08/2016
L’AW609 entame ses essais aux USA !
Leonardo-Finmeccanica a annoncé que le premier prototype de l’AW609 est arrivé à Philadelphie aux Etats-Unis. Ces tests en vol vont permettre d’élargir le programme de validation du « Tiltrotor ».
L'industrialisation est en cours pour l’AW609 et la certification est attendue pour 2018. Un second AW609 est actuellement assemblé sur les installations de Leonardo-Finmeccanica à Philadelphie et rejoindra la flotte d’essais en 2017.
L’AW609 :
Les caractéristiques uniques du système à rotor basculant de l’AW609 combinent les avantages d'un hélicoptère et d'un avion à voilure fixe en un seul appareil. Cet appareil et l'équivalent en plus petit du V-22 « Osprey » américain. Décollage et atterrissage vertical, en volant au-dessus des conditions météorologiques défavorables avec jusqu'à neuf personnes et le confort d'une cabine pressurisée à deux fois la vitesse d'un hélicoptère, l’AW609 représente la prochaine génération d'aéronefs de transport destinés à des marchés gouvernementaux et militaires. L’AW609 certifié pour le vol aux instruments dans des conditions givrantes, dispose d'un fuselage en matériaux composites, un cockpit de pointe. Il est doté de commandes de vol numériques de type « Fly-by-Wire ». Permettant des vitesses de croisière de l'ordre de 275 noeuds et à des distances allant jusqu'à 700 miles nautiques, ce type d'appareil ouvre la voie à de multiples possibilités.
Ce type d'aéronef est susceptible de trouver plusieurs applications dans le civil avec les opérations SAR (Search and Rescue), ainsi qu'en transport ambulance version (SME). En transport passagers version taxi et de convoyage pour le personnel des entreprises. Mais les applications les plus vastes se situent du côté militaire avec les Forces spéciales, le soutien logistique d'unités au sol, le transport rapide et pratique qu'offre ce type de véhicule à des unités aéroportées. Les « tiltrotor » compléteront judicieusement les capacités de projection sur un théâtre d'opération en complémentarité des avions de transports et des hélicoptères.
A ce jour, Leonardo-Finmeccanica revendique 60 commandes pour son aéronef à rotors basculants AW609.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 27 Sep - 19:03
Citation :
Next-gen US military helicopters prepare for 2017 flights
Daniel Wasserbly, Washington, DC - IHS Jane's International Defence Review
26 September 2016
The Sikorsky-Boeing SB>1 Defiant is to be powered by Honeywell's T55 engine. Source: Sikorsky-Boeing
The US Army's Joint Multirole-Technology Demonstrator (JMR-TD)/Future Vertical Lift (FVL) effort is moving towards first flights in 2017, but meanwhile is focused on crucial system architecture demonstrations.
Dan Bailey, the army's programme director for JMR/FVL, said the effort is demonstrating the platform and, perhaps more importantly, its mission system architecture.
US Army and US Navy planners hope to eventually replace a variety of aircraft via FVL. Among other initial parameters, the government is seeking a platform to carry 4 crew and 12 or more troops, self-deploy out to 2,100 n miles, and fly at up to 230 kt or more.
"We're into the second of our mission system architecture demonstrations," Bailey said during 23 September comments at the Center for Strategic and International Studies in Washington, DC.
Subsystem technology is particularly important, Bailey said, because he expects an FVL to be flying for many years in many environments, and therefore requiring easy upgrades. For example, he noted aircraft such as the Boeing AH-64 Apache has been flying for decades and will continue for many more, but newly integrated subsystems have kept the platform viable. Apaches were designed in the 1970s and first delivered to the US Army in 1984.
The JMR-TD programme's focus over the next year is on an architecture implementation process demonstration (AIPD), and six contractors are working on that to validate interoperability between the various pieces, Ryan Bunge, Rockwell Collins' manager for Special Operations, Air Force, and Advanced Rotary-Wing Programs, said during the event.
The platforms themselves are to begin flying prototypes late in 2017, and these will undergo 150-200 hours of flight time - and downtime to review data - that take it through 2019, Bailey said. Those flights are likely to uncover engineering issues that will have to be worked out during a development phase.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Lun 17 Oct - 17:47
Citation :
Lockheed Martin 'pilotage' on V-280 to offer US Army improved situational awareness
Marina Malenic, Washington, DC - IHS Jane's International Defence Review
17 October 2016
The Lockheed Martin Pilotage Distributed Aperture System (PDAS) developed for the Bell Helicopter V-280 Valor tiltrotor aircraft will offer the Pentagon improved situational awareness on a variety of air and land platforms, a company official told IHS Jane's on 14 October.
Lockheed Martin's PDAS system will be demonstrated for the US Army when Bell flies the V-280 Valor for the army's JMR flight demonstration in 2017. (Bell Helicopter)
"PDAS is our next-generation pilotage sensor system," said Rita Flaherty, vice-president of strategy and business development for Lockheed Martin's missiles and fire control division. "We think that it's a next-generation leap-ahead technology to enhance situational awareness in a small, lightweight package that will minimize the need for maintenance." Beyond its use on the V-280 that Bell has developed for the US Army's Joint MultiRole Technology Demonstrator (JMR-TD), the system could be applied to manned and unmanned as well as land and aerial platforms, she said.
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 11 Avr - 20:34
Citation :
Sikorsky - Boeing Future Vertical Lift: The Way Forward
LockheedMartinVideos
Ajoutée le 10 avr. 2017
Sikorsky - Boeing Future Vertical Lift is a scalable design based on proven X2 Technology™. Designed for long range, high speed, superior hover performance and unmatched maneuverability, the Future Vertical Lift program will shape the U.S. military’s helicopter fleet of the future.
mourad27 Modérateur
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 18 Avr - 22:12
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"je veux pour le Maroc de dirigeants intelligeants , une jeunesse intelligente, apte a saisir les occasions a comprendre le siècle ou elle vie, a ne pas vivre a l'ombre du politisme, mais guidée par le perfectionnisme et surtout pas la réalisation et le réalisme " Hassan II 1996
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Jeu 3 Aoû - 18:05
Citation :
03/08/2017
Le prototype du S-97 « Raider » rate son atterrissage !
Le prototype de l’hélicoptère tactique léger S-97 « Raider » a raté son atterrissage après un vol d’essai, au centre de vol de Sikorsky Development à West Palm Beach. Deux pilotes étaient à bord, mais aucun n’a été blessé selon les déclarations de Sikorsky. Il faudra plusieurs semaines avant que l'appareil puisse être réparé et reprenne sa campagne de vol. Mais il semble déjà que cet incident ne remette pas en cause la participation de l'appareil, lors de la compétition pour venir équiper l'US Army.
Le « Raider » de Sikorsky a débuté sa campagne d’essai en vol en mai 2015. Le S-97 « Raider » avec son rotor coaxial rigide doit être testé à des vitesse jusqu'à 220kt - soit environ 50 kt plus vite que la limite de vitesse de la plupart des hélicoptères classiques.
Le Sikorsky S-97 « Raider » :
Le «Raider» est basé sur la technologie du X-2 développé par Sikorsky à la fin des années 2000. Le démonstrateur X-2 est une plate-forme de 5’000 livres, alors que le «Raider» est d'environ 11’000 livres et permettra d’emporter jusqu’à six soldats en mode assaut. En mode reconnaissance, cet espace pourrait être utilisé pour l'équipement supplémentaire ou des munitions avec 2 pilotes et réservoirs de carburant auxiliaire. Outre, sa vitesse maximale presque deux fois supérieure, à 250 nœuds, le S-97 sera plus manœuvrable et aura une signature acoustique plus faible qu’un hélicoptère standard.
Le principe des rotors contrarotatifs coaxiaux à hélices propulsives offrent des vitesses de croisière allant jusqu'à 250 kt (253 mph), plus du double de la vitesse des hélicoptères classiques, selon Sikorsky. Le S-97 est propulsé par un moteur General Electric YT706, une variante du CT7.
Pour Sikorsky, ces attributs permettront au S-97 d’égaler ou dépasser les exigences de l’US Army pour son prochain hélicoptère léger polyvalent, car celui-ci, sera en plus, très performant dans les opérations à haute altitude qui posent problème aux hélicoptères légers actuels.
Photos : 1 Le 97 accidenté 2 lors de son premier vol en 2015@ Sikorsky
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Jeu 31 Aoû - 21:08
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31/08/2017
Essais au sol pour le V-280 « Valor » !
Bell Textron a débuté les premiers essais au sol de son V-280 « Valor ». Selon le calendrier du programme, le prototype devrait également effectuer son vol inaugural avant la fin de l’année.
Le Bell V-280 «Valor» dont le design a été présenté pour la première fois le 10 avril 2013, lors de l'Army Aviation Association of America Annual Professional Forum and Exposition à Forth Worth au Texas. Le V-280 est un aéronef multi-rôle susceptible de répondre au programme «Vertical Lift Program» du département de la Défense. L'armée américaine et le ministère de la Défense sont en effet, à la recherche d’un hélicoptère capable à l’avenir de voler à une vitesse de 230 nœuds, en lieu et place des 140 actuels.
Le concept du V-280 «Valor» est basé sur la gamme des « tilt-rotors » de troisième génération, fortement inspiré du V-22, mais légèrement plus petit. Une des grosses différences avec le V-22 est que les moteurs du V-280 seront fixes et ne pivotent pas avec le rotor, ce qui réduit la complexité et le nombre de pièces mobiles.
Le Bell V-280 «Valor» à rotors basculants doit offrir selon son concepteur, les plus hauts niveaux de maturité et de préparation technique. Le Bell V-280 aura la capacité d'effectuer une multitude de missions avec une vitesse inégalée avec une grande agilité.
Photos : 1 Le prototype au essais au sol 2 Image de synthèse @ Bell Textron
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Sujet: Re: Helicopters of the future / Hélicoptères militaires du futur Mar 19 Déc - 20:39
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19/12/2017
Vol inaugural pour le prototype du V-280 « Valor » !
Amarillo au Texas, Bell Helicopter, a réalisé hier le premier vol de son V-280 « Valor ». Le V-280 « Valor » est un « tilt-rotor » de nouvelle génération conçu pour offrir des capacités d'agilité, de vitesse, de portée et de charge utile inégalées à un coût abordable. Cette étape représente un progrès exceptionnel dans le programme de développement du V-280 et rapproche Bell Helicopter de la création de la prochaine génération d'aéronefs à levage vertical pour les États-Unis.
Le programme Bell V-280 « Valor » fait partie de l'initiative de démonstrateur technologique interarmées polyvalent (JMR-TD). Le programme JMR-TD est le précurseur scientifique et technologique du programme « Future Vertical Lift » (FVL) du ministère de la Défense. Le programme V-280 rassemble les ressources techniques et les capacités industrielles de Bell Helicopter, Lockheed Martin, GE, Moog, IAI, TRU Simulation et formation, Astronics, Eaton, GKN Aerospace, Meggitt et Spirit AeroSystems.
Le Bell V-280 « Valor » est censé fournir à l’armée des États-Unis les plus hauts niveaux de maturité et de préparation technique. L'aéronef est conçu pour offrir la meilleure valeur en termes d'approvisionnement, d'exploitation et de soutien, et de structure de force. Avec deux fois la vitesse et la portée des hélicoptères conventionnels.
Le Bell V-280 « Valor » dont le design a été présenté pour la première fois le 10 avril 2013, lors de l'Army Aviation Association of America Annual Professional Forum and Exposition à Forth Worth au Texas. Le V-280 est un aéronef multi-rôle susceptible de répondre au programme «Vertical Lift Program» du département de la Défense. L'armée américaine et le ministère de la Défense sont en effet, à la recherche d’un hélicoptère capable à l’avenir de voler à une vitesse de 230 nœuds, en lieu et place des 140 actuels.
Le concept du V-280 « Valor » est basé sur la gamme des « tilt-rotors » de troisième génération, fortement inspiré du V-22, mais légèrement plus petit. Une des grosses différences avec le V-22 est que les moteurs du V-280 seront fixes et ne pivotent pas avec le rotor, ce qui réduit la complexité et le nombre de pièces mobiles.
Le Bell V-280 « Valor » à rotors basculants doit offrir selon son concepteur, les plus hauts niveaux de maturité et de préparation technique. Le Bell V-280 aura la capacité d'effectuer une multitude de missions avec une vitesse inégalée avec une grande agilité.
Photos : Premier vol du V-280 Valor @ Bell Textron
Jeu 13 Déc - 12:39
Le Prophéte (saw) a dit: Les Hommes Les meilleurs sont ceux qui sont les plus utiles aux autres
