Longitudinal Characteristics and Aileron Effectiveness of a Midwing Airplane from High-Speed Wind-Tunnel Tests

Abstract

Force and moment coefficients computed from test data are presented. Data indicate that, with respect to elevator-angle variation with speed, airplane will become unstable at approximately 0.7 Mach number. Two devices for improving longitudinal control, a wing-profile modification and auxiliary control flaps, increase the Mach number at which this instability occurs. Former device increases it by as much as 0.075 and 0.8 Mach number, their over-all characteristics are less favorable than those of wing-profile modification.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1944
Accession Number
ADA800912

Entities

People

  • Charles F. Hall
  • Robert L. Mannes

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Aeronautics
  • Air Force
  • Aircrafts
  • Airplanes
  • Altitude
  • Center Of Gravity
  • Control Surfaces
  • Flaps (Control Surfaces)
  • Mach Number
  • Numbers
  • Pressure Distribution
  • Sea Level
  • Surfaces
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.