Aeronautics and astronautics – Aircraft power plants
Patent
1990-01-29
1991-10-22
Barefoot, Galen
Aeronautics and astronautics
Aircraft power plants
244 62, 244 74, 244 53B, 60204, 60 39821, 602701, B64D 2716, B64D 3302
Patent
active
050588265
ABSTRACT:
A method of operating a scramjet engine having an improved low pressure combustion cycle is disclosed. Apparatus for carrying out the method is also disclosed. The method includes the steps of providing supersonic compressed airflow to a combustor and supplying fuel to the combustor for generating a fuel/air mixture having a predetermined temperature less than a temperature required for spontaneous ignition of the fuel/air mixture. The method also includes igniting the fuel/air mixture for sustaining recombination reactions of the fuel/air mixture for generating combustion gases. In the preferred embodiment, the fuel/air mixture is ignited by generating a boundary layer of airflow having atomic oxygen and channeling the boundary layer into the combustor for mixing with a portion of the fuel for generating a boundary layer fuel/oxygen mixture subject to spontaneous ignition. The method results in combustion at a relatively low temperature and pressure which is effective for increasing the combustion rate for providing more complete combustion of the fuel/air mixture while additionally providing primary pressure increase in the combustor as compared to an inlet of the scramjet engine.
REFERENCES:
patent: 3280565 (1966-10-01), Dugger et al.
patent: 3407603 (1968-10-01), Kelley et al.
patent: 3430446 (1969-03-01), McCloy
patent: 3535882 (1970-10-01), Tizio et al.
patent: 3783616 (1974-01-01), Norman et al.
patent: 3974648 (1976-08-01), Kepler
patent: 4194519 (1980-03-01), Baker et al.
patent: 4214442 (1980-07-01), Reingold
patent: 4369940 (1983-01-01), Kelly et al.
patent: 4381017 (1983-04-01), Bissinger
patent: 4477039 (1984-10-01), Boulton et al.
patent: 4817892 (1989-04-01), Jeneke
patent: 4821512 (1989-04-01), Guile et al.
patent: 4841724 (1989-06-01), Hall et al.
Hill and Peterson, Mechanics and Thermodynamics of Propulsion, Addison Wesley Pub, .COPYRGT.1965, pp. 202-226.
R. A. Jones et al., "Toward Scramjet Aircraft," Feb. 1978, Astronautics & Aeronautics, pp. 38-48.
Barefoot Galen
General Electric Company
Squillaro Jerome C.
LandOfFree
Scramjet engine having a low pressure combustion cycle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Scramjet engine having a low pressure combustion cycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scramjet engine having a low pressure combustion cycle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-103730