RESEARCH ON HIGH LIFT BOUNDARY LAYER SUCTION INVESTIGATIONS ON THIN HIGH SPEED WINGS

Abstract

Potential-flow and boundary-layer development calculations were continued. From the standpoint of high lift, it is advantageous to deflect a leading and trailing edge flap about 60 deg and to apply boundary layer suction in the region of the hinge line. Suction through a larger number of fine slots or through a porous surface will require smaller suction quantities and slightly less power than with a single slot. A Kruger flap together with suction at the leading edge may give slightly higher C sub Lmax than a deflected leading edge flap. From the standpoint of power, suction seems to be more favorable than blowing. On swept wings the flow component normal to the wing is essentially important for lift. In this manner C sub L on a swept wing can be estimated from equivalent straight wings. However, spanwise flow considerably affects the high lift behavior of swept wings.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1952
Accession Number
AD0004591

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Boundaries
  • Boundary Layer
  • Boundary Layer Control
  • Contracts
  • Flow
  • High Lift
  • Laminar Boundary Layer
  • Laminar Flow
  • Layers
  • Leading Edge Flaps
  • Leading Edges
  • Military Research
  • Potential Flow
  • Security
  • Swept Wings
  • Trailing Edges

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.