Variable lift inflatable airfoil for tethered balloons

Details Variable lift inflatable airfoil for tethered balloons Variable lift inflatable airfoil for tethered balloons

1977-05-11

1978-07-25

Kelmachter, Barry L.

Aeronautics and astronautics

Aircraft structure

Airship hull construction

244 33, 244123, 244219, B64B 142

Patent

active

041025199

ABSTRACT:
A variable lift inflatable airfoil for tethered balloons having a horizontal fin made up of two inflatable chambers. The primary or lower chamber is normally maintained at a greater pressure than the secondary or upper chamber. Proper inflation and deflation of the secondary chamber will stabilize the pitch attitude of the balloon at some desirable low, positive angle for any wind velocity.

REFERENCES:
patent: 1288451 (1918-12-01), Smyth
patent: 1376121 (1921-04-01), Smyth
patent: 2616509 (1952-11-01), Thomas
patent: 3871603 (1975-03-01), Menke

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