High mach number unducted fan engine

Details High mach number unducted fan engine High mach number unducted fan engine

F - Mech Eng,Light,Heat,Weapons

02

K

60/138

F02K 3/04 (2006.01) F02C 6/20 (2006.01) F02K 3/062 (2006.01)

Patent

CA 1260277

HIGH MACH NUMBER UNDUCTED FAN ENGINE ABSTRACT OF THE DISCLOSURE An aircraft gas turbine engine capable of cruise operation at altitudes in excess of 30,000 feet and at mach numbers in excess of 0.6 is disclosed. The engine comprises a core engine including a compressor which is effective for producing a maximum pressure ratio in excess of 40:1. The engine further comprises a propulsor having an air bypass ratio between 10:1 and 60:1. The engine further comprises means for varying the pressure ratio so that the increase in pressure ratio from take-off to cruise is in excess of 20%.

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