Multipurpose gas generator ramjet/scramjet cold start system
AssigneeUnited Technologies Corporation
InventorsJames Donohue, Roy Guile
Life of this patent
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Abstract
A system for starting a ramjet/scramjet engine includes a gas generator for lighting a combustor of a ramjet/scramjet engine, for generating electrical power for vehicle subsystems, for pumping fuel, and for preheating the fuel. In accordance with the present invention, there is provided a method for cold starting a ramjet/scramjet engine. The method comprises the steps of using a gas generator to light the combustor, to generate a gas product, using the gas product to generate electrical power for vehicle subsystems and to pump fuel, and using the gas product to preheat liquid fuel.
Claims19
A system for starting a ramjet/scramjet engine comprising means for lighting a combustor of said ramjet/scramjet engine, for generating electrical power for vehicle subsystems, for pumping fuel, and for preheating the fuel, said means comprising a gas generator for generating gas products which are used to generate said electrical power, to pump said fuel, and to preheat the fuel.
A method for starting a ramjet/scramjet engine comprising the steps of using a gas generator to generate a gas product, using said gas product to light a combustor section of said ramjet/scramjet engine, generate electrical power for vehicle subsystems and to pump fuel, and using said gas product to preheat liquid fuel.
Dependencies are inferred from the claim text.