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 THAAD (Theatre High-Altitude Area Defence Missile System)

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MessageSujet: THAAD (Theatre High-Altitude Area Defence Missile System)   Dim 1 Mar 2009 - 18:28

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The THAAD (theatre high-altitude area defence) missile system is an easily transportable defensive weapon system to protect against hostile incoming threats such as tactical and theatre ballistic missiles at ranges of 200km and at altitudes up to 150km.

The THAAD system provides the upper tier of a 'layered defensive shield' to protect high value strategic or tactical sites such as airfields or populations centres. The THAAD missile intercepts exo-atmospheric and endo-atmospheric threats

The sites would also be protected with lower and medium-tier defensive shield systems such as the Patriot PAC-3 which intercepts hostile incoming missiles at 20 to 100 times lower altitudes.

THAAD programme
The US Army is expected to acquire 80 to 99 THAAD launchers, 18 ground-based radars and a total of 1,422 THAAD missiles. Two THAAD battalions are planned, each with four batteries.

In 1992 Lockheed Martin Missiles and Space and other industrial team partners were awarded a $689m contract to develop the THAAD system. Raytheon was selected as sub-contractor to develop the ground-based radar. Raytheon is responsible for the solid-state receiver / transmitter modules. TRW is responsible for software development. The other main contractors are Raytheon for the traveling wave tubes, Datatape for the data recorders and EBCO for radar turrets.

The THAAD programme entered the engineering and manufacturing development (EMD) phase in 2000. In May 2004, production of 16 flight test missiles began at Lockheed Martin's new production facilities in Pike County, Alabama.

Flight testing, at White Sands Missile Range, New Mexico, of the EMD system began in 2005. The first flight test of the entire system including missile, launcher, radar and fire control system took place in May 2006. Flight testing began at Pacific Missile Range, Kauai, Hawaii in January 2007 with a successful intercept test in the high endo-atmosphere.

A second successful test took place in April 2007 with intercept in the mid endo-atmosphere. The final White Sands test took place in June 2007, with a low endo-atmosphere test. In October 2007, THAAD performed a successful intercept of a unitary target outside the atmosphere (exo-atmospheric). In June 2008, THAAD successfully intercepted a separating target in mid-endo-atmosphere. Tests will continue at PMR till 2009.

In January 2007, Lockheed Martin was awarded a contract for the first two production THAAD systems, to include six launchers, 48 missiles, two radars and two tactical operations centers. Initial operating capability (IOC) is expected in 2009.

In May 2008, the US Army activated the first THAAD battery unit at Fort Bliss, Texas, which will receive 24 missiles, three launchers, one fire control and one radar unit for initial fielding. This is in preparation for full system fielding in 2009.

In August 2007, Lockheed Martin announced that THAAD launcher, fire control and communications units will be built at its Camden, Arkansas facility. The THAAD interceptor is built at its Pike County facility in Troy, Alabama.

In September 2008, the United Arab Emirates requested the sale of three THAAD fire units, 147 missiles, four THAAD radars, six fire control stations and nine launchers.

Battery
The THAAD battery will typically operate nine launch vehicles each carrying eight missiles, with two mobile tactical operations centres (TOCs) and a ground-based radar (GBR).

THAAD missile information
The target object data and the predicted intercept point are downloaded to the missile prior to launch. The updated target and intercept data are also transmitted to the missile in flight.

The missile is 6.17m in length and is equipped with a single stage solid fuel rocket motor with thrust vectoring. The rocket motor is supplied by Pratt & Whitney Rocketdyne. The launch weight is 900kg.

A separation motor is installed at the interstage at the forward end of the booster section. The separation motor assists in the separation of the kinetic kill vehicle (KKV) and the spent boost motor.

The shroud separates from the KV before impact. The KV is equipped with a liquid-fuelled divert and attitude control system (DACS), developed by Pratt & Whitney Rocketdyne, for the terminal maneuvering towards the target intercept point.

A gimbal-mounted infrared seeker module in the nose section provides terminal homing to close in on the target missile in the terminal phase of approach.

During the initial fly-out phase of flight, the seeker window is covered with a two-piece clamshell protection shroud. Metal bladders installed in the shroud are inflated to eject the protective shroud before the seeker initiates target acquisition. The infrared seeker head, developed by BAe Systems, is an indium antimonide (InSb) staring focal plane array operating in the mid infrared 3 to 5 micron wavelength band.

M1075 truck-mounted launcher
There are nine M1075 truck mounted launchers in a typical THAAD battery. Launch vehicle is a modified Oshkosh Truck Corporation heavy expanded mobility tactical truck with load-handling system (HEMTT-LHS). The 12m-long by 3.25m-wide launch vehicle carries ten missile launch containers. While on the launcher, lead acid batteries provide the primary power. The batteries are recharged with a low-noise generator.

After firing, reloading the launch vehicle takes 30 minutes.

Ground-based radar
The cueing for the THAAD system is provided by the Raytheon Systems AN/TPY-2 ground-based radar (GBR) for surveillance, threat classification and threat identification. THAAD can also be cued by military surveillance satellites such as Brilliant Eyes.

The ground based radar units are C-130 air transportable. The AN/TPY-2 radar uses a 9.2m² aperture full field of view antenna phased array operating at I and J bands (X band) and containing 25,344 solid-state microwave transmit and receive modules. The radar has the capability to acquire missile threats at ranges up to 1,000km.

The first production radar is being tested at the White Sands Missile Range in New Mexico. In September 2004, the THAAD radar tracked a tactical ballistic missile, cueing a successful intercept by a Patriot PAC-3 missile. A second radar was delivered to White Sands in June 2007.

Tactical operations centre

Each THAAD battery has two tactical operations centres (TOC). The TOC has been developed by Northrop Grumman, formerly Litton Data Systems Division. The TOC accommodates two operator stations and is equipped with three Hewlett-Packard HP-735 data processors.

Mobile BMC3I units
The THAAD system is able to 'hand over' targets to other defence systems and can cue the targets to other weapons. THAAD is able to interface to other US or allied air defence data information networks and to the battle management and command control and communications centre.

Northrop Grumman has been contracted to develop the THAAD BMC3I. The battle management and command, control, computers and intelligence (BMC3I) units are installed in hardened shelters mounted on high-mobility multi-wheeled vehicles (HMMWVs).

The THAAD communications system can use JTIDS, mobile subscriber equipment, SINCGARS and the joint tactical terminal for voice and data communications and for intelligence data transfer.

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MessageSujet: Re: THAAD (Theatre High-Altitude Area Defence Missile System)   Jeu 5 Mar 2009 - 15:41



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MessageSujet: Re: THAAD (Theatre High-Altitude Area Defence Missile System)   Dim 15 Mar 2009 - 14:00


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MessageSujet: Re: THAAD (Theatre High-Altitude Area Defence Missile System)   Lun 11 Mai 2009 - 1:01

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MessageSujet: Re: THAAD (Theatre High-Altitude Area Defence Missile System)   Mer 30 Juin 2010 - 17:24


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The Missile Defense Agency and U.S. Army soldiers of the 6th Air Defense Artillery Brigade from Fort Bliss, Texas, successfully conducted an intercept test for the Terminal High Altitude Area Defense (THAAD) missile defense element of the nation's Ballistic Missile Defense System today. A target missile was launched at approximately 9:32 p.m. Hawaii time (3:32 a.m. EDT, 29 June) , and about five minutes later a THAAD interceptor missile was launched from the Pacific Missile Range Facility (PMRF) off the island of Kauai, Hawaii. Preliminary indications are that planned flight test objectives were achieved.

The test involved the intercept of a short-range unitary target in the endoatmosphere (inside the earth's atmosphere). The target, representing a short-range ballistic missile threat, was launched from an at-sea mobile launch platform located in the Pacific Ocean west of Hawaii. Upon acquiring and tracking the target, the THAAD system developed a fire control solution and launched an interceptor missile, which acquired and successfully intercepted the target missile. The intercept occurred at the lowest altitude to date for the THAAD interceptor missile, which has the capability to engage targets both inside and outside the earth's atmosphere. Soldiers of the 6th Air Defense Artillery Brigade from Fort Bliss, Texas, conducted launcher, fire control and radar operations, using tactics, techniques, and procedures developed by the U.S. Army Air Defense School. Soldiers operating the equipment were not aware of actual target launch time. Also following the engagement, test personnel used the Simulation-Over-Live Driver (SOLD) software system to inject multiple simulated threat scenarios into the THAAD radar.

This exercised THAAD's capability to track and engage a mass raid of enemy ballistic missiles. Several missile defense assets and emerging technologies observed the launch and gathered data for future analysis. Participants included the Command and Control, Battle Management and Communications (C2BMC) system and elements of the U.S. Army's PATRIOT system. The PATRIOT system, located at PMRF, conducted engagement coordination with THAAD and conducted upper tier debris mitigation exercises during the intercept engagement. This was the seventh successful intercept in seven attempts for the operationally-configured THAAD system. Operational elements of the Ballistic Missile Defense System are currently deployed, protecting the nation, our allies and friends against limited ballistic missile attack. The system continues to undergo development and testing to provide a robust layered defense against ballistic missiles of all ranges in all phases of flight. The THAAD Program is managed by the Missile Defense Agency in Washington, D.C., and executed by the THAAD Project Office in Huntsville, Ala. Provided by Missile Defense Agency.

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