US 11,840,988 B1
Film cooling with rotating detonation engine to secondary combustion
Aaron Ezekiel Smith, Hermosa Beach, CA (US)
Assigned to Venus Aerospace Corp., Houston, TX (US)
Filed by Venus Aerospace Corp., Houston, TX (US)
Filed on Mar. 3, 2023, as Appl. No. 18/178,456.
Int. Cl. F02K 9/64 (2006.01); F02K 9/96 (2006.01); F23R 7/00 (2006.01)
CPC F02K 9/64 (2013.01) [F02K 9/96 (2013.01); F23R 7/00 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for increasing efficiency of a propulsion engine, said method comprising:
applying a coolant fuel along a first surface of a wall partially defining a combustion chamber of said propulsion engine, a detonation occurring within said combustion chamber, said coolant fuel providing film cooling of said first surface of said wall;
applying an oxidizer to a second surface of said wall partially defining said combustion chamber;
monitoring a flow of said coolant fuel and a flow of said oxidizer; and
controlling said flow of said coolant fuel and said flow of said oxidizer to provide a stoichiometry of a combination of said coolant fuel and said oxidizer, after said coolant fuel has completed said film cooling of said first surface of said wall, such that said stoichiometry of said combination of said coolant fuel and said oxidizer permits a secondary combustion, separate from said detonation, of said combination of said coolant fuel and said oxidizer such that said secondary combustion of said combination of said coolant fuel and said oxidizer provides an increased thrust, in combination with the detonation and relative to thrust provided solely by the detonation, for said propulsion engine, wherein said increased thrust increases said efficiency of said propulsion engine.
 
7. A detonation engine system comprising:
a rotating detonation engine, the rotating detonation engine comprising an annulus wherein a detonation occurs;
a coolant source containing a coolant fuel, said coolant source coupled to provide said coolant fuel to a first surface of a wall partially defining said annulus, wherein said coolant fuel provides film cooling of said first surface of said wall;
an oxidizer source, said oxidizer source coupled to provide an oxidizer to a second surface of said wall partially defining said annulus; and
a monitor configured to control flow of said coolant fuel and flow of said oxidizer, said monitor further configured to ensure that a stoichiometry of a combination of said coolant fuel and said oxidizer, after said coolant fuel has completed said film cooling of said first surface of said wall, permits a secondary combustion, separate from the detonation, of said combination of said coolant fuel and said oxidizer.