Accession Number : AD0825451

Title :   THE RESPONSE OF A HOVERING V/STOL AIRCRAFT TO DISCRETE TURBULENCE.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Gogosha, Orest R. ; Moriarty, Thomas E.

Report Date : JUN 1967

Pagination or Media Count : 116

Abstract : The report analyzes the performance of the XC-142A V/STOL aircraft in hover when subjected to discrete turbulence inputs in the form of vortices and wind shear. The aircraft and turbulence are replaced by approximate mathematical models and the response of the aircraft is calculated using a digital computer. By using the results of a separate analog simulation, two pilot transfer functions are developed which satisfactorily perform the assigned station keeping task. Control sensitivities are computed and compared to maximum available values. It is concluded that control power is not a limiting factor in the performance of the XC-142A in hover. (Author)

Descriptors :   (*TRANSPORT AIRCRAFT, PERFORMANCE(ENGINEERING)), (*VERTICAL TAKEOFF AIRCRAFT, AERODYNAMIC CHARACTERISTICS), (*SHORT TAKEOFF AIRCRAFT, HOVERING), TURBULENCE, RESPONSE, VORTICES, SHEAR STRESSES, STABILITY, MATHEMATICAL MODELS, DIGITAL COMPUTERS, TILT WINGS, GUST LOADS, CONTROL SYSTEMS, PILOTS, TRANSFER FUNCTIONS.

Subject Categories : Transport Aircraft
      V/STOL
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE