MIL-D-81980

Abstract

This specification covers the general requirements for design and establishes uniform methods for testing signal transmission subsystems. For purposes of this specification, a signal transmission subsystem (STS) includes the energy source(s) and output control function devices, and is composed of the following components: cartridges, electric initiators, cartridge actuated devices (CAD's), transmission lines, and other associated equipment (see <a>6.3.2</a>). The transmission lines (hose/tubing, detonating cord, electrical, deflagrating cord, optical, etc.) provide the means for routing a signal(s) between STS components. STS examples and system applications are ejection seat/interseat sequencing subsystems, canopy removal subsystems, etc., for aircrew automated escape systems, guillotine severance subsystems for air-to-air refueling systems, sequencing subsystems for missile and target drone systems, etc. The purpose of the STS testing program is to determine performance, safety, soundness of design, and resistance to environments encountered during service use. <b><u>Intended Use:</u></b> The signal transmission subsystems covered by this specification are intended to provide the signal routing, sequencing, safing and arming, and actuation for aircraft associated systems. A STS may be composed of cartridges, electric initiators, CAD's, and/or associated equipment. <br>