Power plants – Reaction motor – Air supplied by ram effect
Reexamination Certificate
2011-06-07
2011-06-07
Cuff, Michael (Department: 3741)
Power plants
Reaction motor
Air supplied by ram effect
C060S768000
Reexamination Certificate
active
07954329
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.
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Carstens & Cahoon LLP
Cuff Michael
Grossi Aerospace, Inc.
Kim Craig
O'Hagan Christopher P.
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