Status
Failure
DMSP-5D1 F5
Tue Jul 15, 1980 02:22 UTC
Final flight of Long Tank Thor. The failure was attributed to faulty connections between the second and third stages, resulting in the third stage not receiving electrical power.
Rocket
Mission Details
DMSP-5D1 F5
DMSP-5D1 (Defense Meteorological Satellite Program Block 5D1) was the ninth version of the military meteorological satellites of the Defense Meteorological Satellite Program. These version was also known as AMS (Advanced Meteorological Satellite).
This series introduced a new 3-axis stabilized bus with integrated propulsion system, so that the satellite itself acted as an upper stage for the launch vehicle. It consisted of a Star-37XE and a Star-37S motor and the ISS (Integrated Stage System) control system featuring four axial hydrazine thrusters. Power was supplied by a single, articulated 8-segmented solar array.