AIRCRAFT CARBURETOR AIRSCOOPS on FUEL-AIR and Their Effect METERING in Flight

Format:

Conference/Event

Author/Creator:

MOCK, FRANK C., author.

Conference Name:

National Aircraft Production Meeting of the Society

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1942

Summary:

THE design of a carburetor airscoop involves:In general, the two main objectives, maximum ram and minimum disturbance of carburetion, go hand in hand and have the same structural requirements.An analysis is given of the principles of fuel-air metering, by measuring the air velocity differential through air orifices of fixed size, and transmitting this differential, corrected for variations of air density, to secure corresponding fuel flow differential through selected fuel orifices. A description is then given of the departures from steady full-stream air flow encountered in flight service, and the manner in which these affect air-speed metering.Methods are given for detecting, measuring, and curing disturbances from these sources.Recommendations also are given for improved warm and cold air control, for protection against ice formation in the intake system, by eliminating the variable ram differential between cold and warm air flow which exists with most current scoop designs.In conclusion, the need is emphasized for freer cooperation between the airplane, engine, and carburetor engineers; and for recognition in our procurement procedure of the need for preliminary check tests in actual flight, on prototype airplanes, of the design and characteristics of not only the scoop and carburetor, but also all other engine accessories whose functioning may be affected by differences between flight and ground-test conditions

Notes:

Vendor supplied data

Publisher Number:

420087

Access Restriction:

Restricted for use by site license