Minuteman III Special Test Missile 14W-1, with Aerojet-supplied Second Stage Motor AA21517 (PQA6-83), was successfully fired from the Western Test Range (WTR) on 16 June 1977. The missile was tested from Launch Facility 21; range zero time was approximately 1900 hr P.d.t. (0200:00.817 hr UTC). Performance of the second stage motor was satisfactory and all measured performance parameters were within model specification limits. The motor ignited satisfactorily and operated for an action time of 65.2 sec. Second stage skirt jettison occurred 16.40 sec after Stage I-II staging. The liquid injection thrust vector control and roll control system performed satisfactorily. Injectant utilization was 101.2 lb. (Author)


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