General Electric YJ93

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The General Electric YJ93 turbojet engine was designed as the powerplant for both the North American XB-70A Valkyrie bomber and the North American XF-108 Rapier interceptor. The YJ93 was a single-shaft axial-flow turbojet with a variable-stator compressor and a fully-variable convergent/divergent exhaust nozzle. The maximum sea-level thrust was 31,500 pounds.

Unfortunately, the XF-108 interceptor was cancelled outright and the B-70 project was reoriented to a research project only.[1]

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[edit] Specifications

  • Thrust dry:22,000 lb[2]
  • Thrust wet:31,000 lb[2]
  • SFC dry:0.700 lb/(lb.h)[2]
  • SFC wet:1.800 lb/(lbf.h)[2]
  • Core airflow:275lb/s[2]

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