US 4,644,746 AGranted

Gas compressor for jet engine

AssigneeL. W. Fleckenstein, Inc.

InventorNeil W. Hartman

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Abstract

A gas compressor is provided having a source of supersonic velocity gases acting to accelerate inlet gases through a mixing region and diffuser. The inlet gas is introduced into the mixing chamber through a converging-diverging nozzle, causing said gas to accelerate to supersonic velocity. An injection of coolant is provided into the resulting gas stream to cause a decrease in its stagnation temperature and an increase in its stagnation pressure. Also provided is a means for modifying the nuclear spin orientations of the gases involved in the mixing region upstream of the combustion chamber to increase the stagnation pressure and decrease the stagnation temperature of the gas flowing into the combustion chamber. The gas compressor can be utilized in a jet engine for producing a flow of pressurized gases which may be expanded through a thrust producing nozzle.

Claims4

Dependent claims

A gas compressor including:

(a) a housing defining a passage therethrough, said housing having an inlet and an outlet;
(b) means disposed near said inlet for producing a stream of gas flowing at supersonic velocity in a direction from said inlet toward said outlet;
(c) a mixing chamber, internal to said housing, downstream from and in fluid communication with said inlet, which mixing chamber is also in communication with said gas producing means and into which passes said stream of gas;
(d) a source of liquid coolant and means for injecting said coolant into said mixing chamber to accomplish modification of stagnation enthalpy and temperature of the gases in said mixing chamber;
(e) a converging, diverging nozzle disposed internal to said housing between and in fluid communication with said housing inlet and said mixing chamber for providing a passage for inlet gases from said inlet to said mixing chamber whereby said supersonic velocity gas stream which flows through said mixing chamber creates a partial vacuum in said mixing chamber causing said inlet gases to flow through said inlet and through said converging, diverging nozzle into said mixing chamber at supersonic velocity;
(f) a diffuser internal to said housing disposed downstream of and in fluid communication with said mixing chamber, said diffuser including:
(1) a supersonic diffuser defining a chamber of decreasing volume;
(2) a subsonic diffuser defining a chamber of increasing volume;
and (3) a throat connecting said supersonic diffuser and said subsonic diffuser.

6 more elements

A jet engine including:

(a) a housing defining a passage therethrough, said housing having an inlet and an outlet;
(b) means disposed near said inlet for producing a stream of gas flowing at supersonic velocity in a direction from said inlet toward said outlet;
(c) a mixing chamber, internal to said housing, downstream from and in fluid communication with said inlet, which mixing chamber is also in communication with said gas producing means and into which passes said stream of gas;
(d) a source of liquid coolant and means for injecting said coolant into said mixing chamber to accomplish modification of stagnation enthalpy and temperature of the gases in said mixing chamber;
(e) a first converging, diverging nozzle disposed internal to said housing between and in fluid communication with said housing inlet and said mixing chamber for providing a passage for inlet gases from said inlet to said mixing chamber whereby said supersonic velocity gas stream which flows through said mixing chamber creates a partial vacuum in said mixing chamber causing said inlet gases to flow through said inlet and through said converging, diverging nozzle into said mixing chamber at supersonic velocity;
(f) a diffuser internal to said housing disposed downstream of and in fluid communication with said mixing chamber, said diffuser including:
(1) a supersonic diffuser defining a chamber of decreasing volume;
(2) a subsonic diffuser defining a chamber of increasing volume;
and (3) a throat connecting said supersonic diffuser and said subsonic diffuser;
(g) a combusion chamber internal to said housing disposed downstream of and in fluid communication with said subsonic diffuser;
(h) a fuel source in communication with said combustion chamber;
(i) ignition means in communication with said combustion chamber whereby fuel is injected into said combustion chamber from said fuel source and ignited by said ignition means and burned in said combustion chamber, said combustion process also combusting the combination of said high velocity gas stream coolant vapors, and said inlet air which combined products pass from said mixing chamber through said diffuser through said combustion chamber and exit the outlet of said combustion chamber;
(j) a second converging, diverging nozzle internal to said housing disposed between and in fluid communication with said combustion chamber and said outlet of said housing whereby the products of the combustion in said chamber pass through said second converging, diverging nozzle and exit the outlet of said housing, said process of compression, combustion, and expansion producing a resultant force on said housing acting in a direction opposite to the direction of gas flow through said engine.

10 more elements

Dependencies are inferred from the claim text.