EXPERIMENTS ON THE THERMAL PERFORMANCE OF RIBBON PARACHUTES

Abstract

Experimental heat transfer studies were conducted on full scale ribbons of flat circular type parachutes having a geometric porosity of 20.5 percent. A pressurized subsonic wind tunnel served as the flow facility. The average approach flow velocity was 134 feet per second. The measurements were made in the Reynolds number range of one million to ten million, where the Reynolds number is based on the ribbon width of 2.1 inches and on the velocity and temperature of the flow in the slots between the ribbons. The pressure ratio applied to the ribbon was varied from 1.4 to 26.3. Using a transient energy balance, local and average heat transfer data were obtained and compared with available analyses.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1965
Accession Number
AD0468307

Entities

People

  • C. J. Scott
  • E. R. Eckert

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Birds
  • Boundary Layer
  • Energy
  • Energy Transfer
  • Fluid Dynamics
  • Geometry
  • Heat Transfer
  • Heat Transfer Coefficients
  • Measurement
  • Mechanical Engineering
  • Pressure Distribution
  • Pressure Measurement
  • Reynolds Number
  • Subsonic Wind Tunnels
  • Turbulent Mixing
  • Two Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Reinforced Composite Materials