Flameholder stabilization plate for an aircraft engine afterburn

Details Flameholder stabilization plate for an aircraft engine afterburn Flameholder stabilization plate for an aircraft engine afterburn

1981-11-05

1983-12-06

Casaregola, Louis J.

Power plants

Reaction motor

Liquid oxidizer

60749, F02K 310

Patent

active

044185316

ABSTRACT:
A flameholder stabilization plate attaches to the lower part of a flameholding baffle disposed in an afterburner system of a turbofan engine. The plate includes extension tabs which extend laterally from a main body of the plate and block contact by cool fuel droplets entrained in a cold fan air stream flow with the baffle. The tabs disperse some large droplets into smaller ones which flow to a recirculation flame zone behind the baffle where a leaner fuel-air mixture is formed. Other large droplets of fuel are directed by the tabs to combustion zones at lateral sides of the baffle where a richer fuel-air mixture is formed. The leaner mixture in the recirculation zone will result in a more stable flame which, in turn, will more efficiently burn the richer mixture of fuel in the lateral combustion zones.

REFERENCES:
patent: 2978865 (1961-04-01), Pierce
patent: 3618318 (1971-11-01), Bryce
patent: 3653207 (1972-04-01), Stenger et al.
patent: 3800527 (1974-04-01), Marshall et al.
IHI Engineering Review, "Basic Study of the Afterburner", Yoshiyuki Ohra, Sep. 1970.

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