Product-Improvement Test of Ram Air Duct for XM27E1 Armament Subsystem.

Abstract

A Ram air duct has been developed to replace fairings presently being used on the XM27E1 armament subsystem. A product-improvement test of the ram air duct was conducted to determine the suitability of Ram Air Duct for use with the XM27E1 Armament Subsystem. The test item was installed on OH-6A Helicopter, S/N 2921. The helicopter was operated in accordance with profiles established for OH-6A reliability testing. After eight hours of operation and the firing of 10,000 rounds, no damage to the OH-6A or the XM27E1 armament subsystem was found. With the ram air duct installed, the ejection pattern of brass and link debris was well clear of the helicopter fuselage and tail rotor assembly. There were no stoppages, cookoffs, or malfunctions of any type during the test. The ram air duct had no effect on the flight characteristics of the OH-6A. No unusual or difficult maintenance procedures were encountered. The ram air duct is suitable for use on the XM27E1 armament subsystem.

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Document Details

Document Type
Technical Report
Publication Date
Jan 14, 1969
Accession Number
ADA033206

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Army Aviation
  • Assembly
  • Ejection
  • Helicopters
  • Malfunctions
  • Maryland
  • Performance (Engineering)
  • Photographs
  • Reliability
  • Tail Rotors
  • Test And Evaluation
  • United States

Readers

  • Aerodynamics.
  • Aerospace Test and Evaluation
  • ballistics.