AIRFOIL-FLAP PERFORMANCE WITH DE/ANTI-ICING FLUIDS AND FREEZING PRECIPITATION

Describes wind tunnel tests performed to measure the aerodynamic performance effects of de-icing and anti-icing fluids contaminated by varying quantities of freezing precipitation. Tests were carried out in an open circuit wind tunnel over three winter seasons using a full-scale NASA LS(1)-0417 air-foil section with a Fowler flap deployed at 15 degrees. A spray bar in the tunnel settling chamber produced artificial snow, and takeoff was simulated by accelerating the wind speed. Aerodynamic data were obtained while pitching the air-foil to stall conditions. Lift loss associated with the contamination of the fluids was measured and the contamination period required to reach the visual and aerodynamic failure of the fluid were compared to Society of Automotive Engineers hold-over times that corresponded to the test conditions.

• Corporate Authors:

  Transportation Development Centre

  Complexe Guy Favreau, 200 Dorchester Blvd West, Suite 601
  Montreal, Quebec H2Z 1X4,   Canada 
• Authors:
  • Oleskiw, M M
  • Penna, P J
• Publication Date: 1999

Language

• English

Media Info

• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Aerodynamics; Aircraft operations; Airfoils; Contaminants; Deicing chemicals; Freezing; Wind tunnels
• Subject Areas: Aviation; Vehicles and Equipment;

Filing Info

• Accession Number: 00780010
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 25 1999 12:00AM