PARACHUTE CANOPY AND DROGUE.-

The parachute canopy incorporates a crown bridle, at the apex of which is attached, via a short strap, a 1.5m (60-inch) ribbon drogue. The parachute canopy and drogue are packed, drogue first, into a deployment bag, the closed end of which is attached via a withdrawal line to the stirrup on the parachute deployment rocket.

Seat Survival Kit Assembly

The survival kit assembly (fig. 5-28) fits into the seat bucket and comprises a contoured rigid platform (lid assembly), to which are attached an emergency oxygen system and a fabric survival package. A cushion on top of the platform provides a firm and comfortable seat for the occupant.

The lid assembly is a rigid platform that incorporates the emergency oxygen system and lap belts. The lid assembly also provides stowage for the radio beacon and mountings for the rucksack assembly. The lid assembly is retained in position in the seat bucket by brackets at the front and lugs secured in the lower harness locks at the rear, Attached to the lugs are two adjustable lap belts with integral quick-release fittings.

EMERGENCY OXYGEN SYSTEM.- An emergency oxygen cylinder, a pressure reducer, and associated hardware are mounted on the underside of the lid assembly. A green manualoperating handle is mounted on the LH side of the assembly, and a cylinder contents gauge is on the inside face of the left-hand thigh support. The

Figure 5-28.-Seat survival kit assembly; (A) top view; (B) bottom view. 5-25

emergency oxygen system is automatically activated during ejection by a lanyard connected to the cockpit floor. An oxygen/communications hose is connected to unions on the LH rear top of the lid assembly, and provides connections between the seat occupant and the aircraft and survival kit systems.

RADIO LOCATOR BEACON.- A URT33A radio locator beacon is located in a cutout in the left thigh support. The beacon is actuated during ejection by a lanyard connected to a common anchorage point with the emergency oxygen lanyard.

RUCKSACK ASSEMBLY.- The rucksack assembly is attached to the underside of the lid assembly by five fabric straps and a double cone and pin release system. The rucksack contains a life raft and the survival aids. Yellow manual deployment handles mounted on the kit enable the occupant to deploy the rucksack and contents onto a lowering line after seat/man separation. The LRU-23/P life raft inflates automatically on rucksack assembly deployment.