Combined cycle missile engine system
View Patent ↗An insensitive combined cycle missile propulsion system includes a solid fuel contained within a first section of the missile, a liquid oxidizer contained within a second section of the missile and a solid oxidizer contained within a third section of said missile. A first conduit has a first valve communicating the fuel and the oxidizer and a second conduit, spatially removed from the first conduit, has a second valve communicating the fuel and the oxidizer. An inlet system for delivering atmospheric oxygen for combustion with the fuel rich gases generated within the missile and a nozzle exhausts combustion products that result from combustion of the fuel, the liquid and solid oxidizers, and air.
1. An insensitive combined cycle missile propulsion system, comprising:
a first section of said missile having an upstream end and an opposing downstream end with a solid fuel contained therein, said sold fuel having an opening extending therethrough;
a second section of said missile containing a liquid oxidizer adjacent said upstream end with a first liquid oxidizer injector disposed therebetween;
a first conduit adjacent said downstream end having a shaped bend effective to change a direction of flow of combustion products of said solid fuel and said liquid oxidizer by about 180°;
a second conduit having a second liquid oxidizer injector extending from said second section to a point downstream of said shaped bend;
a rocket nozzle downstream of said second liquid oxidizer injector effective to exhaust combustion products resulting from combustion of said solid fuel and said liquid oxidizer into a combustor;
an oxidizer rich boost propellant coating interior walls of said combustor; and
an obstructed air inlet having a nose end and a body end with said body end terminating at said combustor.
2. The propulsion system of claim 1 wherein said nose end of said air inlet is obstructed by an air inlet cover and said body end of said air inlet is obstructed by said oxidizer rich boost propellant.
3. An insensitive combined cycle missile propulsion system, comprising:
a fuel contained within a first section of said missile;
an oxidizer contained within a second section of said missile, wherein one of said fuel and said oxidizers are a liquid until consumed during flight of said missile and the other of said fuel and said oxidizer is a solid until consumed during flight;
a first conduit having a first valve communicating said fuel and said oxidizer;
a second conduit, spatially removed from said first conduit having a second valve communicating said fuel and said oxidizer;
a rocket nozzle downstream of said first valve and said second valve effective to exhaust combustion products resulting from combustion of said fuel and said oxidizer into a combustor, an oxidizer rich boost propellant coating an interior surface of said combustor: and
an obstructed air inlet having a nose end obstructed by an air inlet cover and a body end obstructed by said oxidizer rich boost propellant wherein said oxidizer rich solid propellant further forms a consumable throat within said combustor.