PHOTO 65 -- Flight C-16 : Sept. 16, 1979
 | This is the parachute ejection triggering (PET) module that debuted aboard Flight C-16. Very similar in concept to the earlier PET modules, this one, however, incorporated an electronic backup timer. This was considered to be a desirable feature in case the rocket did not slow sufficiently to close the air-speed switch, which could be the case if the rocket had a significant horizontal component of velocity... |