Lower-than-allowable pressure in the gas generator a Falcon 9 rocket engine triggered an automatic abort of a test-firing at Cape Canaveral Air Force Station today, company officials reported.
A second try is tentatively set for 10:50 a.m. at Launch Complex 40.
The low pressure was detected on Engine No. 6. High pressure in the combustion chamber of the same engine prompted an abort 1.1 seconds into an engine test on Friday.
The first stage of the Falcon 9 is powered by nine Merlin 1C engines. The engines use liquid oxygen and RP-1 propellants. RP-1 is a highly refined kerosene.
Space news and analysis from Kennedy Space Center and Cape Canaveral 
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