Aircraft minimum drag speed system

Details Aircraft minimum drag speed system Aircraft minimum drag speed system

1981-06-18

1984-04-24

Wise, Edward J.

Boots, shoes, and leggings

244182, G06F 1520

Patent

active

044451792

ABSTRACT:
A method is provided for obtaining minimum aircraft fuel consumption per unit of time by flying at the minimum drag speed. The computation of the minimum drag speed is based on the principle that in an aircraft in level flight with a constant power setting, wherein a differential exists between thrust and drag, the resultant longitudinal acceleration will exhibit an increasing magnitude when the aircraft is below minimum drag speed and a decreasing magnitude when the aircraft is above minimum drag speed. Accordingly, longitudinal accelerations are induced in an aircraft through the use of incremental thrust changes, and the rate of change of said accelerations are compared with airspeed in order to determine the minimum drag speed in accordance with said principle. The aircraft is then maintained at the minimum drag speed which permits it to stay aloft at minimum fuel consumption rates.

REFERENCES:
patent: 4063072 (1977-12-01), Sochtig
patent: 4113046 (1978-09-01), Arpino
patent: 4159088 (1979-06-01), Cosley
patent: 4312041 (1982-01-01), DeJonge
patent: 4325123 (1982-04-01), Graham et al.

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