A STUDY OF RAIN EROSION TESTING METHODS FOR SUPERSONIC SPEED

Abstract

To better understand the mechanism by which materials passing through rain at supersonic speeds are damaged the results of numerous types of impacts on metals were analyzed. An equation which relates total energy of impact to the volume of metal displaced was derived and found adequate to explain damage in the velocity range from less than one foot per hour to greater than Mach 3. This equation together with results of incidence angle tests led to an overall damage equation which was successfully applied to the problem of multiple drop rain damage. Principal parameters are target material tensile strength; impacting material shape and mass; angle of incidence; and the velocity of impact. Facility improvements and test method refinements are described.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1959
Accession Number
AD0234776

Entities

People

  • Donald E. Hurd
  • Roy F. Holmes

Organizations

  • General Dynamics

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Composite Materials
  • Drop Tests
  • Equations
  • Materials
  • Materials Laboratories
  • Materials Testing
  • Measurement
  • Physical Properties
  • Plastic Explosives
  • Rain Erosion
  • Shock
  • Strain Rate
  • Tensile Strength
  • Test Methods
  • Yield Strength

Readers

  • Atmospheric Science/Meteorology
  • Combustion and Flow Dynamics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow