A Simplified Passive Spacecraft Separation System

摘要

APL spacecraft require equipment: (1) to initiate despin and solar blade unfolding; (2) to separate the spacecraft from the launch vehicle injection stage; (3) to yaw the injection rocket after separation to prevent collision with the spacecraft. This report describes a unique simplified separation system which accomplishes the same objectives, but has the following advantages over the method presently used: (1) functional components are 60% lighter; (2) it has no batteries or wiring; (3) it requires no ordnance of any kind; (4) it is immune to RF, static, or other electrical background disturbances; (5) its environmental temperature limitations are far in excess of similar limitations on the spacecraft and the launch vehicle; (6) it has indefinite shelf life without servicing; (7) its operation is completely independent of the launch vehicle configuration; and (8) it can be tested and operated at any place any desirable number of times without hazard to itself or adjacent personnel or equipment. (Author)