Power plants – Reaction motor – Interrelated reaction motors
Patent
1987-11-20
1989-05-09
Stout, Donald E.
Power plants
Reaction motor
Interrelated reaction motors
60 39161, 60751, 4152101, F02K 304
Patent
active
048277126
ABSTRACT:
A turbofan gas turbine engine comprising in axial flow series a fan, a booster compressor and a core engine is provided with a diffuser. The diffuser is positioned axially between the booster compressor and the compressor of the core engine to efficiently diffuse the air from the fan to the compressor of the core engine. The diffuser comprises a plurality of circumferentially arranged geodesic pipe diffusers, the pipe diffusers extend axially and radially and the outlets of the pipe diffusers are displaced circumferentially by an angle of between 20.degree. and 60.degree. with respect to the inlets of the pipe diffusers.
The geodesic pipe diffusers allows the airflow between the fan and the core engine to be diffused adequately without compromising the efficiency of the core engine, or the high mass flow rate of the fan and also minimizes the length, weight and drag of the gas turbine engine.
REFERENCES:
patent: 2627721 (1953-02-01), Rosenlund
patent: 3792586 (1974-02-01), Kasmarik et al.
patent: 3830058 (1974-08-01), Ainsworth
Lefebvre, Gas Turbine Combustion, Hemisphere Pub. Corp., McGraw-Hill, pp. 86-87, 1983.
Shen, "Power Flow in a Differential", Machine Design, Apr. 8, 1976, pp. 77-79.
Rolls-Royce plc
Stout Donald E.
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