CHAPTER 2
NAVY AIRCREW COMMON EJECTION SEAT (NACES)
equivalent airspeed (keas) between zero altitude and
The NACES seat (figs. 2-1 and 2-2) is a
50,000 feet.
cartridge-operated and rocket-assisted ejection seat
with an automatic electronic sequencing system. Safe
Ejection is initiated by pulling a seat-firing handle
escape is provided for most combinations of aircraft
on the front of the seat bucket between the occupant's
altitude, speed, altitude and flight path within the
thighs. The parachute container is fitted with the
envelope of zero speed, zero altitude in a substantially
canopy breakers to enable the seat to eject through the
level altitude to a maximum speed of 600 knots
RH PITOT
PARACHUTE RISERS
(STOWED)
DROGUE
DEPLOYMENT
CATAPULT
ELECTRONIC
HARNESS REEL
SEQUENCER
SEQUENCER
WIRING
HARNESS
RH BALLISTIC
MANIFOLD
BACKPAD CUSHION
OXYGEN COMMUNICATIONS
BACKPAD
HOSE
EJECTION CONTROL
HANDLE
EMERGENCY OXYGEN
BAROSTATIC
OPERATING HANDLE
RELEASE UNIT
SURVIVAL KIT
MOR GUARD
LEG RESTRAINT
LINE LOCK (2)
UNDERSEAT ROCKET MOTOR
MK 123 MOD 0
LEG RESTRAINT
LINE SNUBBER
RELEASE LEVER (2)
Figure 2-1.--Forward ejection seat, RH view (SJU-17(V)2/A).
2-1
