P&w Increases Airflow for Sst Engine
Increased airflow is the key to the more powerful engine Pratt & Whitney Aircraft will propose next month for Phase 3 of the supersonic transport development program as well as growth versions of the engine. Designated JTF17A-21, Pratt & Whitney’s Phase 3, duct-burning turbofan engine will produce 4,000 lb. more takeoff thrust than the company’s 57,000-lb.-thrust JTF17A-20 Phase 2C demonstrator engines now running on the company’s test stands (AW&ST Aug. 8, p. 54).
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