Electroexplosive Devices in Aerospace Vehicle Systems

Reasons for using electroexplosive devices in aerospace vehicles are given. A number of different electroexplosive devices are illustrated and their uses are described. The explosive materials used in these devices are discussed in two classes: propellants and high explosives. Methods for controlling deflagration or detonation to achieve desired effects are discussed. Construction of a typical electroexplosive cartridge is described, with special reference to the bridgewire-explosive system. A "bridge-wire equation" is suggested for determining the functioning characteristics of the system. The method of determining the reliability of these "one-shot" items is compared to that used for devices which may be operated for a number of cycles. Safety of handling electroexplosive devices is discussed along with a few common-sense rules for accident prevention.