Accession Number : AD0774432

Title :   Aerodynamic Comparison of Two Double-Slotted Rudders.

Descriptive Note : Master's thesis,

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

Personal Author(s) : Huneycutt,Tyler B. , III

Report Date : DEC 1973

Pagination or Media Count : 150

Abstract : Double-slotted rudders (DSR), proposed for an Advanced Medium STOL Transport by the L. O. M. Corporation and Convair Division of General Dynamics Corporation, were tested in a 7 X 10 ft wind tunnel at a dynamic pressure of 17.0 psf and a Reynolds number of 2,000,000. The rudders were tested in 5 deg increments of deflection from 0 to 40 deg, and at sidewash angles varying from -10 to +10 Deg. In the range of deflection angles from 0 to stall, the Convair DSR design (DSR1) produced slightly higher side-forces; however, the L. O. M. DSR design (DSR2) stalled at a higher deflection angle than DSR1. Maximum side-force produced by DSR1 and DSR2 were almost exactly equal. The side-force versus sidewash angle curves were linear. A rudder deflection schedule for DSR2 was devised which produced minimum drag and linear side-forces. (Modified author abstract)

Descriptors :   *Aerial rudders, *Aerodynamic slots, Short takeoff aircraft, Tail assemblies, Aerodynamic characteristics, Actuators, Computer programs, Theses

Subject Categories : Aerodynamics
      V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE