Comparison of Wind Tunnel and Flight Measurements of Stability and Control Characteristics of a Douglas A-26 Airplane

Abstract

Tests in Langley pressure tunnel of model XA-26 bomber were compared with those of A-26B (twin-engine attack bomber) and showed that static longitudinal stability, indicated by elevator-fixed neutral points, and variation of elevator deflection in straight and turning flight were good. Airplane possessed improved stability at low speeds which was attributed to pronounced stalling at root of production wing. At rudder-force reversal at speeds higher than those in flight tests, agreement in rudder-fixed and rudder-free static directional stability was good. Hinge moment obtained at zero sideslip was satisfactory for determining aileron forces in sideslip.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1946
Accession Number
ADA800609

Entities

People

  • Gerald G. Kayten
  • William Koven

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Aeronautics
  • Agreements
  • Aircrafts
  • Airplanes
  • Center Of Gravity
  • Control Surfaces
  • Deflection
  • Elastic Properties
  • Flight
  • Measurement
  • Stalling
  • Surface Properties
  • Three Dimensional
  • Trailing Edges
  • Wind Tunnels

Readers

  • Aerodynamics/Aeronautics.