Injector element for rocket engine
AssigneeAerojet Rocketdyne, Inc.
InventorsDouglas S. Parker, Daniel P. Cap, Frederick E. Dodd
Life of this patent
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Abstract
An injector element for a liquid propellant rocket engine includes an oxidizer conduit, a central cavity that is fluidly coupled with the oxidizer conduit downstream of the oxidizer conduit, a first annulus that at least partially surrounds the oxidizer conduit and is fluidly coupled with an ignition fluid supply downstream of the ignition fluid supply, and a second annulus that at least partially surrounds the oxidizer conduit and is fluidly coupled with a fuel supply downstream of the fuel supply. The second annulus is fluidly coupled between the first annulus and the central cavity.
Claims14
An injector element for a liquid propellant rocket engine, comprising:
- a central cavity;
- a conduit that opens to the central cavity for feeding a primary fluid to the central cavity;
- a first feed chamber adjacent the conduit, the first feed chamber including a first passage and a first inlet port for feeding a first fluid into the first passage;
- a second feed chamber adjacent the conduit, the second feed chamber including a second passage and one or more second inlet ports for feeding a second fluid into the second passage;
- and
- a feed port fluidly connecting the first passage and the second passage to feed the first fluid from the first passage into the second passage, wherein the second passage opens to the central cavity to feed the first fluid or the second fluid into the central cavity to mix with the primary fluid.
A liquid propellant rocket engine, comprising:
- a combustion chamber including a throat;
- a nozzle aft of the throat;
- and
- an injector element opening into the combustion chamber, the injector element including, an oxidizer conduit;
- a central cavity fluidly coupled with the oxidizer conduit downstream of the oxidizer conduit;
- a first annulus at least partially surrounding the oxidizer conduit, wherein the first annulus is fluidly coupled with an ignition fluid supply downstream of the ignition fluid supply, the ignition fluid supply including triethylaluminum-triethylborane;
- a second annulus at least partially surrounding the oxidizer conduit, wherein the second annulus is fluidly coupled with a fuel supply downstream of the fuel supply;
- and
- wherein the central cavity is fluidly connected to the first annulus via the second annulus.
Dependencies are inferred from the claim text.