Invention Grant
- Patent Title: Statically-operating ejector ramjet
- Patent Title (中): 静态操作喷射式冲压喷气发动机
-
Application No.: US12024573Application Date: 2008-02-01
-
Publication No.: US07954329B2Publication Date: 2011-06-07
- Inventor: Fabio G. Grossi
- Applicant: Fabio G. Grossi
- Applicant Address: US TX Grapevine
- Assignee: Grossi Aerospace, Inc.
- Current Assignee: Grossi Aerospace, Inc.
- Current Assignee Address: US TX Grapevine
- Agency: Carstens & Cahoon LLP
- Agent Christopher P. O'Hagan
- Main IPC: F02K7/08
- IPC: F02K7/08 ; F02K7/10

Abstract:
The present invention provides a statically starting and operating ramjet engine system. The system includes a pumping ejector coupled to a ramjet engine upstream of the ramjet inlet. A subsonic converging nozzle is placed in fluid communication between the pumping ejector and ramjet inlet. The pumping ejector ejects a primary fluid into the ramjet inlet to entrain a secondary fluid and create a mixed flow with sufficient momentum and internal energy to achieve characteristic speed. The converging nozzle provides a characteristic cross section necessary for the mixed flow to achieve characteristic speed as it moves through the nozzle, thereby producing a standing shock wave at the point of maximum convergence of the nozzle and creating sonic conditions at the inlet of the ramjet engine.
Public/Granted literature
- US20090158744A1 Statically-Operating Ejector Ramjet Public/Granted day:2009-06-25
Information query