The development of an igniter system for the Mk 1 Mod 2 and Mk 3 Mod 1, cartridges which eliminates the pyralin booster cup of the Mk 1 Mod 0 and Mk 3 Mod 0, is described as are the determination of a new propellant charge and trap plate design. The procedures followed in qualification are described and results sumarized. (Author).

Presented are the development, final qualifi cation, and production of the Rocket Catapult Mk 1 Mod O and Mk 2 Mod O (Aircraft Ejection Seat), formerly known as RAPEC I and RAPEC III. A brief summary is given of the results of the final qualification tests conducted at various facilities. The Mk 1 Mod O and Mk 2 Mod O rocket catapults permit a pilot to ejecly during the hazardous ejection conditions at take off, landing, and high speed at low altitude.