Accession Number : AD0777987

Title :   An Experimental Study of a Vane Controlled Jet Flap Gust Alleviation System.

Descriptive Note : Master's thesis,


Personal Author(s) : Deal,Leonard Joseph , Jr

Report Date : MAR 1974

Pagination or Media Count : 77

Abstract : An experimental effort to demonstrate the feasibility of an active gust alleviator using a fluidically actuated jet flap control system was undertaken. The wing model had a variable deflection jet at the trailing edge and was free to move in pitch only. A vane mounted ahead of the wing served as gust sensor and provided the signal which controlled jet angle. Experimental results showed the system capable of alleviating up to 92% of the motion caused by a sinusodial gust at constant amplitude. RMS values of wing rotation angle were found to be 0.68 degrees with control off and 0.29 degrees with control on when excited by a random two-dimensional gust. (Author)

Descriptors :   *Jet aircraft, *Jet flaps, Aerodynamic control surfaces, Boundary layer control, Gust loads, Trailing control surfaces, Theses

Subject Categories : Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE