Title:
超音速外部圧縮ディフューザおよびその設計方法
Document Type and Number:
Japanese Patent JP4540282
Kind Code:
B2
Abstract:
A supersonic external-compression inlet comprises a generally scoop-shaped supersonic compression section for diffusing a supersonic free stream flow. The supersonic compression section includes a main wall having a leading edge and a throat portion downstream of the leading edge, and side portions joined to opposite side edges of the main wall so as to form a generally scoop-shaped structure. The side portions advantageously extend into the supersonic flow stream far enough to encompass the initial oblique shock wave that is attached to the leading edge of the main wall. The main wall has an inner surface formed generally as an angular sector of a surface of revolution, the inner surface of the main wall coacting with inner surfaces of the side portions to define a three-dimensional external-compression surface. The supersonic external-compression inlet also includes a subsonic diffuser section arranged to receive flow from the supersonic compression section and to diffuse the flow to a subsonic condition. A variable-geometry inlet includes an external ramp hinged about its forward edge and forming a portion of the inner surface of the scoop-shaped diffuser, pivotal movement of the external ramp serving to vary a throat size of the inlet. The subsonic diffuser includes an internal ramp hinged about its aft edge for maintaining a smooth transition from the external ramp.
Inventors:
Hedges, Linda Es
Consec, Joseph El
Bobby W, Thunders
Consec, Joseph El
Bobby W, Thunders
Application Number:
JP2001523274A
Publication Date:
September 08, 2010
Filing Date:
August 09, 2000
Export Citation:
Assignee:
The Boeing Company
International Classes:
B64D33/02; B64C30/00; F02C7/042; F04D29/54; F04D29/56
Foreign References:
| DE3447141A | ||||
| US5881758 | ||||
| US5301901 | ||||
| US3430640 |
Attorney, Agent or Firm:
Sonoda Yoshitaka
Kobayashi Yoshinori
Kobayashi Yoshinori