Propeller whose blades are provided with slats

Details Propeller whose blades are provided with slats Propeller whose blades are provided with slats

1988-06-22

1989-06-20

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416DIG2, 416200R, 415119, B64C 1116

Patent

active

048405400

ABSTRACT:
Directly driven propeller whose propeller blades are provided with slats and which is designed for a lower blade tip Mach number in order to reduce the propeller noise. The slats are rigidly connected to the propeller blades and the slat tips lie on a diameter given by the equation ##EQU1## where LTLP=lower transonic limit of the particular blade configuration including slat

REFERENCES:
patent: 1021822 (1912-04-01), Broussouse
patent: 1344496 (1920-06-01), Flattum
patent: 1684567 (1928-09-01), Wragg
patent: 1889717 (1932-11-01), Warfel
patent: 3606579 (1971-09-01), Mehus
patent: 4687416 (1987-08-01), Spranger
B. Berdrow et al., "Leiser Antrieb fur die allgemeine Luftfahrt Schluberi uber die Definitionsphase", p. XI and translation, Dec. 1976.
VDI-Nachrichten, No. 12, p. 42 and translation, Mar. 20, 1987.

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