Accession Number : AD0436778


Title :   A STUDY OF OSCILLATORY WING PROPULSION.


Descriptive Note : Final rept.,


Corporate Author : ILLINOIS INST OF TECH CHICAGO


Personal Author(s) : Michelson,I


Report Date : Nov 1963


Pagination or Media Count : 83


Abstract : The propulsive force on an oscillating wing in uniform flow has been investigated. A survey was made of the principal hydro- and aerodynamic considerations which are necessary for an adequate physical understanding of this phenomenon. An extension of one portion of this analysis has led to a new relationship of fundamental interest, relating propulsive thrust to flapping frequency, amplitude, and flow speed. Wind tunnel measurements of instantaneous, small, oscillatory forces by means of a virtual center suspension and balance system are discussed. An account is given of actual measurements in a particular case, which are believed to be the first experimental verification in a wind tunnel, of oscillatory wing propulsion. (Author)


Descriptors :   *WINGS , *WINGS , OSCILLATION , PROPULSION SYSTEMS , FORCE(MECHANICS) , WAKE , THRUST , MOMENTUM , VORTICES , FLAT PLATE MODELS , ENERGY , BOUNDARY LAYER , AIRFRAMES , STRUCTURES , HYDRODYNAMICS , MOTION


Distribution Statement : APPROVED FOR PUBLIC RELEASE