SPACE SHUTTLE ENGINEERING AND OPERATIONS SUPPORT DESIGN NOTE NO.1.4-7-29 ANALYSIS OF ECLSS PERFORMANCE DURING REENTRY AFTER LOSS OF ONE AMMONIA TANK

摘要

An analysis has been performed to determine whether, in case of a loss of one of the ammonia tanks, the Ammonia Boiler System can provide adequate heat rejection for the Orbiter ECLSS during re¬entry.nThe results indicate that temperatures can be maintained as long as NH3 is available, but that one tank does not contain sufficient NH3 to complete all missions. A recommendation is made to investi¬gate incorporation of onboard NH3 quantity calculations, and/or addition of a third NH, tank.