초록 ▼

An inlet-outlet module 108 having both an inlet 58 and an outlet 62 for a heat exchanger system 52 is disclosed. Various construction details which improve the stiffness to weight ratio and the aerodynamic smoothness are developed. In one embodiment, the module 108 is formed of a one piece casting h

An inlet-outlet module 108 having both an inlet 58 and an outlet 62 for a heat exchanger system 52 is disclosed. Various construction details which improve the stiffness to weight ratio and the aerodynamic smoothness are developed. In one embodiment, the module 108 is formed of a one piece casting having a lobed mixer 94 at the outlet.

대표청구항 ▼

[ What is claimed is:] [1.] An inlet outlet module for a heat exchanger system for a gas turbine engine that is disposed about an axis of rotation Ar, the engine having a primary annular flow path for working medium gases disposed about the axis Ar and a secondary annular flow path for working mediu

[ What is claimed is:] [1.] An inlet outlet module for a heat exchanger system for a gas turbine engine that is disposed about an axis of rotation Ar, the engine having a primary annular flow path for working medium gases disposed about the axis Ar and a secondary annular flow path for working medium gases disposed about the primary flow path, the secondary flow path having a fan duct which is bounded by walls including an inner wall, an outer wall, a radial bifurcator wall extending between the inner wall and the outer wall, the secondary flow path further having lines of flow extending along such walls which include flow lines Fd disturbed by the heat exchanger system and flow lines Fu undisturbed by the heat exchanger system, the inlet and outlet module having a pair of axially spaced surfaces which are coincident with the undisturbed flow line Fu, which comprises:an inlet having a first covered section at an inlet plane P havingan inner wall extending for a width W which is inwardly of the undisturbed flow line Fu,an outer wall which extends circumferentially a width W, which is spaced rearwardly from and radially outward from the inner wall of the inlet by an inlet radial height Hi, and radially outward from the undisturbed flow line an exposed radial height Hf, the inlet having an exposure ratio which is the ratio of the exposed radial height Hf to the inlet radial height Hi and which is not greater than seventy percent (Hf/Hi.ltoreq.0.7), and the inlet having an aspect ratio which is the ratio of an exposed radial height Hf to the width W of the inlet which is not greater than one half (Hf/W.ltoreq.0.50);an outlet having an exhaust passage which is spaced axially from the inlet and terminating at an outlet section, the outlet having an outermost wall which is radially outwardly of the undisturbed flow line a maximum radial height Ho and having a width Wo and having an aspect ratio which is not greater than one-half (Ho/Wo.ltoreq.0.50);a first sidewall and a second sidewall which extend from the outlet section to the outer and inner walls of the inlet and a flow path surface wall which forms the outermost portion of the outlet extends between the sidewalls and extends from the outlet section to the outer wall of the inlet;wherein the module is a one piece casting and has an inlet having a thickness adjacent the outer wall of the inlet which is at least four times the thickness of adjacent walls on the interior of the module, the module having acceptable levels of drag and foreign object damage tolerance which results in part from the exposure ratio of less than seventy percent and the aspect ratio of less than fifty percent.