Accession Number : ADD005547

Title :   Variable Lift Inflatable Airfoil for Tethered Balloons.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Crosby,Edward L , Jr

Report Date : 25 Jul 1978

Pagination or Media Count : 8

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. (Author)

Descriptors :   *Patents, *Airfoils, Lift, Tethering, Balloons, Inflatable structures, Chambers, Pitch(Motion), Wind velocity, Low angles

Subject Categories : Lighter-than-air Aircraft
      Administration and Management

Distribution Statement : APPROVED FOR PUBLIC RELEASE