Study of the Army Helicopter Design Hover Criterion Using Temperature and Pressure Altitude

Abstract

Ambient temperature and altitude are used to determine design points for helicopters. In this paper, pressure altitude is used to determine the probabilities of Hover Out of Ground Effect (HOGE) capability rather than geophysical elevation. This strategy is applied to the state of Colorado. First this paper displays variations between geophysical elevation and pressure altitude. Then it shows that substituting pressure altitude for elevation leads to more conservative estimates for the HOGE capability. It is concluded that modern computational resources can be used to tailor helicopter design points to expected areas of operations rather than specifying a single generic temperature/pressure altitude combination.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2017
Accession Number
AD1039027

Entities

People

  • Douglas V. Horacek
  • Mark E. Calvert

Tags

Communities of Interest

  • Air Platforms
  • Cyber
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Altitude
  • Applied Mathematics
  • Army Aircraft
  • Colorado
  • Elevation
  • Engineering
  • Fluid Mechanics
  • Ground Effect
  • Helicopters
  • Mechanics
  • Operations Research
  • Probability
  • Rotary Wing Aircraft
  • Simulations
  • United States

Readers

  • Aerospace Engineering
  • Fluid Dynamics.
  • Geodesy