Axisymmetric Thrust Augmenting Ejector with Discrete Primary Air Slot Nozzles

Inventor

Steven G. Reznick
Milton E. Franke, Air Force Institute of Technology

Abstract

A circular thrust augmenting ejector has an annular wall which defines a central passageway and a convergent contoured inlet section, a constant area cylindrical mixing section and a divergent conical diffuser outlet section. The inlet, mixing and outlet sections merge one into the next in axisymmetric serial relationship. The ejector also has a plurality of discrete primary nozzles arranged about the periphery of the annular wall at the entrance to the inlet section thereof for injecting a primary flow of high velocity air into the inlet section and thereby entraining a secondary flow of ambient air into the central passageway of the ejector.

Document Type

Patent

Status

Issued

Issue Date

5-15-1984

Patent Number

US 4448354 A [4,448,354]

CPC Classification

F02K1/36

Application number

06/401163

Assignees

Government of the United States, as represented by the Secretary of the Air Force, Washington, DC (US)

Filing Date

7-23-1982

Comments

Some images in this patent overrun the 8.5 x 11 format. Please refer to the A0-size attached version of the patent for complete figures.

Recommended Citation

Reznick, Steven G., and Milton E. Frank. Axisymmetric Thrust Augmenting Ejector with Discrete Primary Air Slot Nozzles. United States Patent 4448354 (A), issued 15 May 1984.