Tests of a 0.30 Scale Semispan Model of the Douglas XTB2D-1 Airplane Wing and Fuselage Combination in the NACA 19-Foot Pressure Tunnel. 2 - Roll-Flap Positioning and Lateral-Control Investigation

Abstract

Roll-flap characteristics are investigated to determine positioning of full-span double-slotted flaps for providing adequate lateral control and high maximum lift coefficient, effectiveness of inboard flaps as dive brakes, and total full-span flap load and hinge moment. Results indicate that adequate rolling effectiveness and high maximum lift coefficient may be obtained with this type flap. Lateral control characteristics are satisfactory. It is recommended that maximum helix angle to be raised by increasing roll-flap deflection in the retracted position.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1944
Accession Number
ADA800565

Entities

People

  • C. D. Ashworth
  • Robert T. Russell
  • Stanley H. Spooner

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aeronautics
  • Aircrafts
  • Airplanes
  • Control Systems
  • Deflection
  • Dynamic Pressure
  • Flaps (Control Surfaces)
  • Fluid Dynamics
  • Fuselages
  • High Lift Devices
  • Navy
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Slotted Flaps
  • Surfaces

Readers

  • Aerodynamics/Aeronautics.