The Shape of a Cable Used for Towing a Pitot-Static Probe from a Helicopter

Abstract

The shape of a cable used to tow a pitot-static probe from a helicopter is estimated for airspeeds up to 120 km. These estimates show the probe to be well outside the influence of the rotor wake. Experimental results obtained from photographs taken from a chase helicopter are used to resolve an uncertainty in cable drag coefficient and comparisons are made with the theoretical predictions of overall shape. The effect of the assumption of a weightless cable and of reduced probe drag are also shown.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1980
Accession Number
ADA095017

Entities

People

  • N. E. Gilbert

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamics
  • Aircrafts
  • Applied Mathematics
  • Coefficients
  • Computational Science
  • Department Of Defense
  • Differential Equations
  • Engineering
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Helicopters
  • Language
  • Mathematical Analysis
  • Photographs
  • Shape
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Space Exploration and Orbital Mechanics.