B - Operations – Transporting – 64 – D
Patent
B - Operations, Transporting
64
D
B64D 33/10 (2006.01) F02C 7/14 (2006.01) F02C 7/18 (2006.01)
Patent
CA 2042216
13DV-9954 ABSTRACT OF THE DISCLOSURE A precooling heat exchange arrangement includes a hollow fairing mounted on a forward side of an engine mounting structure extending radially across an annular fan duct of a gas turbine engine. The fairing has an aerodynamically-shaped external wall disposed in the main air flow through the fan duct, spaced upper and lower internal plenums and a middle internal plenum disposed therebetween and sealed therefrom. A conduit routes hot bleed air flow from the engine to and from the lower and upper plenums of the fairing and at least one heat exchanger is mounted in the fairing. The heat exchanger includes a heat transfer structure having an interior in communication with the upper and lower plenums and having an exterior in communication with the fan duct air flow and the middle plenum of the fairing such that a fractional portion of fan duct air flow can divert from the fan duct and pass across the exterior of the heat exchanger in heat transfer relationship with the hot bleed air passing through the interior of the heat exchanger for cooling the hot bleed air. An air flow control mechanism is provided in communication with the middle plenum of the fairing for routing cool fan duct air flow to the core engine compartment after passing over the exterior of the heat transfer structure.
Company General Electric
Craig Wilson And Company
Miller Franklin E.
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