The Criticality of Engine Exhaust Simulations on VSTOL Model-Measured Ground Effects.

Abstract

This experimental investigation demonstrated the criticality of performing accurate full-scale engine exhaust simulations during model-measured VSTOL ground effects testing. The effects of varying the nozzle exit turbulence, total pressure distributions, and nozzle pressure ratio on the net and component ground-induced forces for two-, three-, and four-nozzle configurations with large blocking surfaces (as well as a smaller, cruciform two-nozzle blocking surface more characteristic of a real aircraft planform) were studied.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1979
Accession Number
ADA073114

Entities

People

  • J. R. Lummus

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Computational Fluid Dynamics
  • Dynamic Pressure
  • Fluid Dynamics
  • Fluid Mechanics
  • Ground Effect
  • Measurement
  • Pressure Distribution
  • Pressure Measurement
  • Pressure Transducers
  • Short Takeoff Aircraft
  • Turbofan Engines
  • Turbojet Engines
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Combustion and Flow Dynamics.
  • Educational Psychology