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<blockquote data-quote="unsere" data-source="post: 60278" data-attributes="member: 9"><p><span style="font-size: 26px"><strong>Apkws II</strong></span></p><p></p><p>El nuevo APKWS II Advanced Precision Kill Weapon System (APKWS), es un derivado directo del cohete para helos, denominado hydra con un nuevo sistema en el cual se le adisiona una cabeza de guiado, para convertirlo en un misil de bajo costo, el mismo es de laser semi-activo, capaz de golpear blancos estaticos y en movimiento con alta presicion, el mismo consta del tradicional 70mm sin guia llamado hydra con el sistema BAE System's distributed Aperture Semi-Active Laser Seeker (DASALS).Las pruebas consistieron en lanzar el APKWS desde un M260, y se verificaron alcances entre los 1500 y 5500 mts con efectvidad del 85%.</p><p></p><p><img src="http://www.aerospaceweb.org/question/weapons/weapons/logir-apkws.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>siguiendo con la info sobre la disponibilidad del arma, transcribo articulo de la revista Janes de mayo de 2006:</p><p></p><p>BAE Systems and General Dynamics on</p><p>27 April reclaimed a contract to deliver a</p><p>guided version of the 2.75 in Hydra rocket</p><p>that the same pairing lost in 2005 due to</p><p>test failures and cost concerns.</p><p>The US Army cancelled the first Advanced Precision Kill</p><p>Weapon System (APKWS) contract in January 2005, citing</p><p>test failures blamed on the BAE Systems guidance package.</p><p>At the time, General Dynamics was the prime</p><p>contractor and BAE Systems served as a subcontractor.</p><p>The programme was reborn about 12 months ago as a</p><p>new competition for the USD1.4 billion APKWS II award.</p><p>The army attracted competing bids from BAE Systems,</p><p>Lockheed Martin and Raytheon. General Dynamics lost</p><p>its role as a prime contractor, but was picked to be the</p><p>warhead supplier for all three teams.</p><p>Lockheed Martin and Raytheon proposed nose-mounted</p><p>guidance systems, but the army decided to stay with</p><p>APKWS incumbent BAE Systems. The award reunites BAE</p><p>Systems with General Dynamics, but flips their roles as</p><p>prime contractor and subcontractor for APKWS II.</p><p>Ferrell said BAE Systems won the contract because it</p><p>continued to improve its unique mid-body guidance</p><p>approach even after the original programme was</p><p>cancelled. Rather than installing the sensors in the nose of</p><p>the warhead, BAE Systems embeds semi-active lasers</p><p>onto four mid-body fins that unfold after the rocket is</p><p>launched. The sensor inputs are fused together in the guidance</p><p>system, recalibrating the rocket’s path to the target</p><p>using several tracks. This design also incorporates the</p><p>advantage of leaving the Hydra rocket’s existing fuzewarhead</p><p>chain intact.</p><p>Problems with the same basic technology, however,</p><p>caused the demise of the original programme, according</p><p>to the Government Accountability Office (GAO). InaMarch</p><p>2006 report, the GAO concluded that, “integration of the</p><p>laser on the fins rather than in the head of the missile</p><p>proved to bemore problematic than originally estimated.</p><p>The configuration difficulty presented problems</p><p>that the contractor could not</p><p>overcome and keep the missile within cost</p><p>and on schedule”.</p><p>However, BAE Systems developed several modifications</p><p>to the guidance software after the cancellation that led to a</p><p>series of successful flight tests in the fourth quarter of</p><p>2005, Ferrell said. “We found out there was some calibration</p><p>things we had to do a little bit different,” Ferrell said.</p><p>The army is buying the guided rockets to have a smaller,</p><p>but equally accurate, alternative to the 49 kg Lockheed</p><p>Martin AGM-114 Hellfire missile. Cost is a major concern</p><p>for the programme, with a full-rate production price target</p><p>of USD10,000 per rocket. According to the GAO, the army</p><p>intends to buy 71,565 guided rockets under the APKWS</p><p>programme.</p><p>Stephen Trimble JDW Americas Bureau Chief,</p><p>Washington, DC</p><p></p><p><img src="http://www.defense-update.com/images/apkws.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://www.army-technology.com/projects/apache/images/apache5.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Saludos</p></blockquote><p></p>
[QUOTE="unsere, post: 60278, member: 9"] [SIZE=7][B]Apkws II[/B][/SIZE] El nuevo APKWS II Advanced Precision Kill Weapon System (APKWS), es un derivado directo del cohete para helos, denominado hydra con un nuevo sistema en el cual se le adisiona una cabeza de guiado, para convertirlo en un misil de bajo costo, el mismo es de laser semi-activo, capaz de golpear blancos estaticos y en movimiento con alta presicion, el mismo consta del tradicional 70mm sin guia llamado hydra con el sistema BAE System's distributed Aperture Semi-Active Laser Seeker (DASALS).Las pruebas consistieron en lanzar el APKWS desde un M260, y se verificaron alcances entre los 1500 y 5500 mts con efectvidad del 85%. [IMG]http://www.aerospaceweb.org/question/weapons/weapons/logir-apkws.jpg[/IMG] siguiendo con la info sobre la disponibilidad del arma, transcribo articulo de la revista Janes de mayo de 2006: BAE Systems and General Dynamics on 27 April reclaimed a contract to deliver a guided version of the 2.75 in Hydra rocket that the same pairing lost in 2005 due to test failures and cost concerns. The US Army cancelled the first Advanced Precision Kill Weapon System (APKWS) contract in January 2005, citing test failures blamed on the BAE Systems guidance package. At the time, General Dynamics was the prime contractor and BAE Systems served as a subcontractor. The programme was reborn about 12 months ago as a new competition for the USD1.4 billion APKWS II award. The army attracted competing bids from BAE Systems, Lockheed Martin and Raytheon. General Dynamics lost its role as a prime contractor, but was picked to be the warhead supplier for all three teams. Lockheed Martin and Raytheon proposed nose-mounted guidance systems, but the army decided to stay with APKWS incumbent BAE Systems. The award reunites BAE Systems with General Dynamics, but flips their roles as prime contractor and subcontractor for APKWS II. Ferrell said BAE Systems won the contract because it continued to improve its unique mid-body guidance approach even after the original programme was cancelled. Rather than installing the sensors in the nose of the warhead, BAE Systems embeds semi-active lasers onto four mid-body fins that unfold after the rocket is launched. The sensor inputs are fused together in the guidance system, recalibrating the rocket’s path to the target using several tracks. This design also incorporates the advantage of leaving the Hydra rocket’s existing fuzewarhead chain intact. Problems with the same basic technology, however, caused the demise of the original programme, according to the Government Accountability Office (GAO). InaMarch 2006 report, the GAO concluded that, “integration of the laser on the fins rather than in the head of the missile proved to bemore problematic than originally estimated. The configuration difficulty presented problems that the contractor could not overcome and keep the missile within cost and on schedule”. However, BAE Systems developed several modifications to the guidance software after the cancellation that led to a series of successful flight tests in the fourth quarter of 2005, Ferrell said. “We found out there was some calibration things we had to do a little bit different,” Ferrell said. The army is buying the guided rockets to have a smaller, but equally accurate, alternative to the 49 kg Lockheed Martin AGM-114 Hellfire missile. Cost is a major concern for the programme, with a full-rate production price target of USD10,000 per rocket. According to the GAO, the army intends to buy 71,565 guided rockets under the APKWS programme. Stephen Trimble JDW Americas Bureau Chief, Washington, DC [IMG]http://www.defense-update.com/images/apkws.jpg[/IMG] [IMG]http://www.army-technology.com/projects/apache/images/apache5.jpg[/IMG] Saludos [/QUOTE]
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