[quote][b][url=/v3/forum/%C3%A9tats-unis-31/topic/f-22-news-221/?post=14164#post-14164]ex-rogcas[/url] a dit le 30/05/2007 à 12:35 :[/b]

[quote="vigi"]Je veux pas dire de bétises, RogCas, mais il me semble que le Sidewinder allume son propulseur sur le rail.[/quote]
Tu as raison (comme Sonny d'ailleurs).

Voici les procédures de lancement pour les AMRAAM et les Sidewinder :

[quote][b]The F-22 has a requirement to launch weapons throughout the service envelope at roll rates up to 100 degrees per second.[/b] This is a groundbreaking requirement made even tougher by tight clearances and flow fields that result from internal carriage.

The F-22 carries its primary armament, the AIM-120C Advanced Medium-Range Air-to-Air Missile (AMRAAM) internally on the EDO Corp.-built LAU-142/A pneudraulic (pneumatic and hydraulic) launcher, called the AMRAAM Vertical Eject Launcher (AVEL). Six launchers mounted in the main weapon bays carry and launch the AMRAAMs. [b]The AVEL is very stiff in order to control missile movement in the weapons bay and supply the proper ejection forces on the missile.[/b] [b]The AVEL[/b], which is made mostly of aluminum, has a nine-inch stroke, and [b]ejects the missile out of the bay at more than 25 feet per second, with a force of 40Gs.[/b] The long stroke and high velocity are required to safely separate the missile from the aircraft in all combat conditions. Unlike conventional missile launchers, [b]the AVEL requires no explosive pyrotechnics cartridges,[/b] (which means the AVEL requires less logistics support and maintenance) [b]but instead uses the aircraft's hydraulic system to eject the missile.[/b] The entire missile launch sequence --door opening, AVEL ejecting the missile, missile ignition and flyout, door closing --takes just seconds.

On the F-22, one AIM-9 is carried in each of the aircraft's side weapons bays, which are located on the outside of the engine inlets. There are no plans to carry the AIM-9 in the F-22's main weapons bay. [b]The side bays are each covered by two thermoset composite doors that run the length of the compartment and are hinged at the top and bottom of the bay.[/b] Although AIM-9X is slightly longer than the AIM-9M, it will still fit in the F-22 without modification to the side weapons bays.

The missiles are carried on a Lockheed Martin Tactical Aircraft Systems-built LAU-141/A hydraulic launcher, called a Trapeze Launcher. [b]This launcher[/b], which uses some components from the existing LAU-128/A launcher, [b]is basically the wingtip launch rail from an F-16 with a swing out mechanism that extends rapidly. The LAU-141/A is also fitted with a missile motor plume deflector, which prevents damage to the side weapons bay as the missile launches off the rail.[/b] Each missile is loaded by opening the doors, extending the rail, sliding it on the rail, retracting the missile, and closing the doors. Nearly all Sidewinders are loaded manually, using a three-person load crew. AIM-9 loading for F-22 will be no different.

As the AIM-9 uses infrared guidance, the missile first has to acquire the target. To launch a Sidewinder from the F-22, the side weapons bay doors open; the Trapeze Launcher, with missile attached, extends to put the missile's seeker into the slipstream; the seeker acquires the target; [b]the missile ignites and flies off the rail.[/b] The Trapeze Launcher then retracts, and the weapons bay doors close. Once launched, the F-22 pilot can leave the fight, as Sidewinder is autonomous, following its seeker to the target, after it leaves the launch rail. The entire Sidewinder launch sequence, from door opening to door closing, takes just seconds.[/quote]
[url=http://www.globalsecurity.org/military/systems/aircraft/f-22-weapons.htm]Source[/url]

Résumé : l'AMRAAM est ejecté, le Sidewinder glisse sur son rail de transport.[/quote]