Transpiration-Cooled Nosetip Development.

Abstract

A 316L stainless steel transpiration-cooled nosetip for a high-performance missile system was designed and fabricated using powder metallurgy techniques. The geometry of the nosetip was established, and permeability requirements were analytically defined. A parametric study of subscale billets determined permeability as a function of powder size and sintering temperature. Near-net-shape billets were fabricated, and machining procedures for the porous material were established. A comparison was made between the actual and calculated gas flow through the nosetip over its entire surface. Two nosetips were successfully tested in a thermal environment approximating the flight environment at the Edward's Air Force Base Rocket Propulsion Laboratory (RPL). Tests were conducted at 0-degree and 10-degree angles of attack. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1980
Accession Number
ADA087837

Entities

People

  • G. F. Pittinato
  • M. T. Martin
  • N. C. Campbell

Tags

Communities of Interest

  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Facilities
  • Boundary Layer
  • Chemistry
  • Electrical Conductivity
  • Fabrication
  • Geometry
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Physical Properties
  • Porous Materials
  • Pressure Distribution

Readers

  • Aerodynamics.
  • Metallurgy
  • Rocket Propulsion.