Another possible reasons for failure was inadequate preheating of catalyses beds for the pulsing rocket thrusters: hydrazine fuel decomposes on the beds to make hot gasses that throttle out the rocket nozzles, cold catalyses beds caused misfiring and instability in crash review tests.
Another possible reasons for failure was inadequate preheating of catalyses beds for the pulsing rocket thrusters: hydrazine fuel decomposes on the beds to make hot gasses, cold catalyses beds caused misfiring and instability in crash review tests. These hot gasses throttle out the rocket nozzles.