Shock-stabilized supersonic flame-jet method and apparatus

Details Shock-stabilized supersonic flame-jet method and apparatus Shock-stabilized supersonic flame-jet method and apparatus

1995-03-30

1996-07-02

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431353, 239 79, 239 85, 427446, F23C 500

Patent

active

055315909

ABSTRACT:
A supersonic flame jet device includes a body having an entry portion of relatively small cross-sectional area, an expanding supersonic nozzle section and a cylindrical duct of extended length connected in series with each other. In using the device, an oxidant at high pressure is introduced into the entry passage wherein the flow is increased to sonic velocity. The sonic velocity flow of oxidant is then introduced into the passage of expanding cross-section in the direction of the gas flow while introducing a fuel to be burned into the flow of the oxidant. The velocity of flow of the oxidant or the oxidant and the fuel is then increased to supersonic velocity prior to entry into the extended duct of constant cross-sectional area where a shock is produced to stabilize flame reactions along the extended duct length whereby a supersonic flame jet will exit the extended duct.

REFERENCES:
patent: 2510482 (1950-06-01), Scharbau et al.
patent: 2714563 (1955-08-01), Poorman et al.
patent: 2861900 (1958-11-01), Smith et al.
patent: 3190560 (1965-06-01), Schilling et al.
patent: 4004735 (1977-01-01), Zverev
patent: 4165364 (1979-08-01), Dollinger et al.
patent: 4836447 (1989-06-01), Browning

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