Flight-Tests Measurements of Aileron Control Surface Behaviour at Supercritical Mach Numbers

Abstract

Aileron upfloat occurring at critical Mach because of loss of pressure recovery on upper surface aft of shock wave causes large increases in aileron hinge moment. Pressure distribution data showed critical effect of Mach number on hinge-moment magnitude. Aileron oscillations encountered ranging from mild "buzz" to motion causing aileron deformation showed agreement with wind-tunnel test results on partial span wing section. Spasmodic low-amplitude buzz warns of more severe oscillations at higher Mach.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1947
Accession Number
ADA800562

Entities

People

  • George A. Rathert Jr.
  • Harvery H. Brown
  • Lawrence A. Clousing

Organizations

  • National Aeronautics and Space Administration

Tags

DTIC Thesaurus Topics

  • Aeronautics
  • Aircrafts
  • Airplanes
  • Amplitude
  • Control Surfaces
  • Control Systems
  • Mach Number
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Recovery
  • Shock
  • Shock Waves
  • Surfaces
  • Waves
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.