The Measurement of Aerodynamic Forces on an Oscillating Model of a Fan-Engine Nacelle.

Abstract

A technique has been developed to measure the aerodynamic forces that are generated when a model fan-engine nacelle is oscillated in a uniform airflow. The technique enables the model to be oscillated in pitch or in yaw about one of two axis positions. A series of measurements for the four combinations of axis position and direction can be analysed to yield the aerodynamic stiffness and damping derivatives for motions of pitch, yaw, vertical and lateral translation. A preliminary series of tests has been made using a simple model of a fan-engine in a low speed wind tunnel. This Memorandum describes the rig and test technique, and discusses the outcome of the tests.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1976
Accession Number
ADA032611

Entities

People

  • D. R. Gaukroger
  • R. Cansdale

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aircrafts
  • Amplifiers
  • Angular Motion
  • Drive Shafts
  • Electric Motors
  • Engine Nacelles
  • Frequency
  • Joints
  • Measurement
  • Motors
  • Oscillators
  • Resonant Frequency
  • Strain Gages
  • Universal Joints
  • Wind
  • Wind Tunnels

Readers

  • Aerodynamics.
  • Computational Modeling and Simulation
  • Marine Hydrodynamics