Charles J Trefny - Olmsted Township OH, US Vance F Dippold - Lakewood OH, US
Assignee:
The United States of America as Represented by the Administrator of National Aeronautics and Space Administration - Washington DC
International Classification:
F02K 7/08
US Classification:
60767
Abstract:
A new dual-mode ramjet combustor used for operation over a wide flight Mach number range is described. Subsonic combustion mode is usable to lower flight Mach numbers than current dual-mode scramjets. High speed mode is characterized by supersonic combustion in a free-jet that traverses the subsonic combustion chamber to a variable nozzle throat. Although a variable combustor exit aperture is required, the need for fuel staging to accommodate the combustion process is eliminated. Local heating from shock-boundary-layer interactions on combustor walls is also eliminated.
Dual-Mode Combustor
US Patent:
20150013305, Jan 15, 2015
Filed:
Jul 15, 2013
Appl. No.:
13/941987
Inventors:
- Washington DC, US Vance F. Dippold - Lakewood OH, US
International Classification:
F02K 7/14 F02K 7/10
US Classification:
60205
Abstract:
A new dual-mode ramjet combustor used for operation over a wide flight Mach number range is described. Subsonic combustion mode is usable to lower flight Mach numbers than current dual-mode scramjets. High speed mode is characterized by supersonic combustion in a free-jet that traverses the subsonic combustion chamber to a variable nozzle throat. Although a variable combustor exit aperture is required, the need for fuel staging to accommodate the combustion process is eliminated. Local heating from shock-boundary-layer interactions on combustor walls is also eliminated.