STUDY OF THE VTOL DOWNWASH IMPINGEMENT PROBLEM

Abstract

Intensive review and analysis were given the problems associated with dust and debris entrainment in the downwash of helicopters and other VTOL configurations during near ground operations. A review is presented of present knowledge concerning the nature of downwash impingement. A list and brief description are given of suggested programs which have one of the following objectives: (1) to obtain a better understanding of the problem, (2) to investigate ideas that have been proposed to reduce the entrainment and detrimental effects of particles, and (3) to investigate ideas that have been proposed for avoiding entrainment of objects by the downwash. A series of investigations are presented that are recommended to accomplish one or more of the above objectives.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1960
Accession Number
AD0251154

Entities

People

  • Richard P. White Jr.
  • Robert J. Vidal

Organizations

  • Calspan

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamic Configurations
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Boundary Layer Flow
  • Computational Fluid Dynamics
  • Flow Fields
  • Fluid Dynamics
  • Fluid Mechanics
  • Government Procurement
  • Hydrodynamics
  • Mechanical Properties
  • Pressure Distribution
  • Secondary Flow
  • Tilt Wings
  • Turbines

Readers

  • Aerosol Science/Aerosol Physics
  • Aerospace Engineering
  • Team-Based Human-Centered Cognitive Task Decision Making and Information Performance.