A REPORT ON RESEARCH DIRECTED TOWARD THE DESIGN, DEVELOPMENT, CONSTRUCTION, AND TESTING OF 'AERODYNAMIC CAVITIES'.

Abstract

The report describes the design and testing of two aerodynamic cavities, capable of holding sensitive instrumentation, built for installation on a KC-135 airplane. Each cavity is housed in a container 24 inches in diameter and 30 inches long. A neck three inches long joins the end of the container to the fuselage skin. Interior dimensions of the cavity are 11-3/4 inches square by 24 inches deep. A door completes each package making it a self-contained unit. Wind-tunnel tests simulating altitudes between 30,000 and 50,000 feet and at Mach numbers between 0.4 and 0.8 show that low sound pressure levels can be maintained within the cavities. A means of moving the apparatus occupying the cavity close to the airstream is recommended to insure these low sound pressure levels. Preliminary investigations led to water table tests as a means of studying vortex activity and general cavity behavior. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1959
Accession Number
AD0645363

Entities

People

  • Mathias J. Leupold
  • Robert W. Baker

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Airplanes
  • Containers
  • Fuselages
  • Groundwater
  • Instrumentation
  • Mach Number
  • Sound Pressure
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Fluid Dynamics.
  • Thermal Physics or Thermal Science.