Gas turbine engine compartment vent system

Power plants – Combustion products used as motive fluid – Cooling of auxiliary components

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Details

60 3907, 138 39, F02C 712

Patent

active

050542818

ABSTRACT:
A system for selectively venting cool bypass duct air into selected locations between a gas turbine engine and the engine shroud. The venting system is useful in a turbine engine having a core engine surrounded by an engine casing and nacelle, with a fan at the inlet directing air flow into the bypass duct between core engine and engine casing. The venting system basically comprises tubes inserted in holes in the engine shroud which separates the bypass duct from the engine compartment. Often sensors, electronic components or the like are advantageously located in the engine compartment. However, elevated temperatures in the engine compartment often damages or degrades those components. The vent tubes are positioned so as to direct cool air onto those components. A large number of vents may be provided in the shroud as manufactured, each plugged at manufacture, with only those opened which are needed for a specific engine with specifically located heat sensitive components.

REFERENCES:
patent: 2884956 (1959-05-01), Perlin
patent: 3381713 (1968-05-01), Jacobsen
patent: 3981142 (1976-09-01), Irwin
patent: 4063847 (1977-12-01), Simmons
patent: 4773212 (1988-09-01), Griffin et al.

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