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ACES II is a rugged, light-weight, easy-to-maintain ejection seat.
It provides optimum performance across an escape envelope from
0 to 600 knots equivalent airspeed and 0 to 50,000 feet altitude,
and is designed to safely eject a crew member under zero-zero
condition. At low speed, the ACES II produces a parachute 1.8
seconds after initiation. A unique gyro-controlled system - STAPAC
- stabilizes the seat during ejection.
Advanced Sensor Control
ACES II provides trajectory divergence allowing two crew members
to eject in tandem or side-by-side with no interference. A drogue
parachute is used for stabilization and deceleration in high-speed
escapes and for stabilization during descent from high altitudes.
The recovery parachute is mortar-deployed to assure positive
consistent deployment, and is reefed for additional crew member
protection. Sensors on the seat detect altitude and airspeed
and send the information to the recovery sequencing subsystem,
which then directs the operation of the seat according to the
situation.
The seat is equipped with an emergency oxygen supply for high-altitude
ejection, a survival kit and a harness release mechanism to
release the crewman from the seat during automatic recovery.
With more than 8,000 seats delivered to date, ACES II is currently
used on F-15A/B/C/D/E, F-16 A/B/C/D, B-1B, B-2, A-10 AND F-117A
aircraft, as well as on F-15s and F-16s of 16 other nations. An
advanced version has been selected for the F/A-22 Advanced Tactical
Fighter.
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