Natural Icing Flight Tests and Additional Simulated Icing Tests of a UH-1H Helicopter Incorporating an Electrothermal Ice Protection System.

Abstract

Natural icing flights and additional simulated icing tests were accomplished with a UH-1H helicopter equipped with an advanced ice protection system. This testing was the third icing test program accomplished with the test aircraft, but the first to include natural icing conditions. The simulated icing tests were conducted in the National Research Council (NRC) spray rig at Ottawa, Canada. The natural icing flights were made from the Ottawa International Airport. Seven tests in the spray rig and ten natural icing flights were made totaling 30.4 flight hours of icing testing. Icing was encountered on five of the natural icing flights. The icing conditions ranged from 0.15 gram per cubic meter liquid water content at -18 C to 0.30 grams per cubic meter at -2 C. The aircraft operated in icing conditions on each of the flights from 40 minutes to a little over one hour. The number of main blade deicing cycles required under the conditions experienced varied from three to five.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1978
Accession Number
ADA059704

Entities

People

  • Richard H. Cotton

Organizations

  • Lockheed Martin

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Pressure
  • Aircrafts
  • Airframes
  • Army Aircraft
  • Blades
  • Climate Change
  • Detection
  • Detectors
  • Failure Mode And Effect Analysis
  • Flight Crews
  • Measurement
  • Pressure Regulators
  • Radar Altimeters
  • Rotary Wing Aircraft
  • Test And Evaluation
  • Wind Tunnels

Readers

  • Aerospace Engineering
  • Explosive Engineering.
  • Geotechnical Engineering.