Low loss duct burner

Details Low loss duct burner Low loss duct burner

1977-10-25

1985-07-09

Bentley, Stephen C.

Power plants

Reaction motor

Interrelated reaction motors

60261, F02K 306

Patent

active

045273901

ABSTRACT:
A jet propulsion engine with a fan bypass duct includes a duct burner with a plurality of flame stabilizers therein each mounted to inner case and outer case members through spherical bearings. Each of the stabilizers consists of two blade members having integral arms thereon actuated by fore and aft motion of an external actuating ring to assume an expanded position to increase duct turbulence for mixing air flow therethrough with a fuel supply and into a retracted position against each other to reduce pressure drop under nonafterburning operation. Each of the flame stabilizer blades has a platform that controls communication between a hot air source and a duct for improving fuel vaporization during afterburner operation thereby to increase afterburning limits; the platforms close communication between the hot air source and the duct during nonafterburning operation when flame stabilization is not required.

REFERENCES:
patent: 2847821 (1958-08-01), Brown
patent: 2899799 (1959-08-01), Setterblade
patent: 3245218 (1966-04-01), Marchant
patent: 3528250 (1970-09-01), Johnson
patent: 3693354 (1972-09-01), Hull

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