Tilt Rotor Aeroacoustic Model Project

Abstract

A new tiltrotor aeroacoustic research facility, the Tilt Rotor Aeroacoustic Model (TRAM), is being developed by NASA and the U. S. Army. The TRAM Project will enable new insights into the fundamental aeroacoustics of proprotors and tiltrotor aircraft, leading to improved acoustic prediction methodologies and noise reduction techniques. An overview of NASA's goals in understanding and reducing the technology barriers for civil tiltrotor aircraft is provided as well as a description of how TRAM will support these goals. TRAM is capable of being configured as an isolated rotor or as a complete full-span dual rotor aircraft model. The TRAM test stands and their modular, compatible sub-systems are described in detail. Sample results from an isolated rotor test recently completed at the Duits-Nederlandse Windtunnel are presented. The current status of the full-span model development is described.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1999
Accession Number
ADA530541

Entities

People

  • Jeffrey L. Johnson
  • Larry A. Young

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Composite Materials
  • Control Systems
  • Data Acquisition
  • Electric Motors
  • Helicopter Rotors
  • Measurement
  • Pressure Measurement
  • Research Facilities
  • Rotary Wing Aircraft
  • Three Dimensional
  • Tilt Rotor Aircraft
  • Transducers
  • Transport Aircraft
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Systems Analysis and Design