Pratt & Whitney J57 Prototype (X-176) Turbojet Engine
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Type: Turbojet, twin-spool
Thrust: 44,480 N (10,000 lb) (dry)
Compressor: 9-stage low-pressure axial; 7-stage high-pressure axial
Combustor: 8 annular chambers
Turbine: Three-stage axial
Weight: 1,900 kg (4,200 lb)