ROLLING RESISTANCE OF AIRCRAFT WHEELS IN DRY SNOW

FLYGPLANSHJULS RULLMOTSTAAND I TORR NYSNOE

This report deals with measurements of the rolling resistance of an aircraft wheel caused by dry snow. The wheel was equipped with a tyre of dimension 12.50-16. The measurements were carried out at a static wheel load of 38.800 n and tyre pressures of 410 kpa and 550 kpa. The speed during the measurements was 50 km/h. The rolling resistance increased approximately proportionally with increasing snow depth at a constant tyre pressure. Increased tyre pressure caused a decrease of the rolling resistance. This effect indicates that tyres with high pressure should be used on aircraft wheels when taking off from snow-covered areas, even if the load on the wheels does not require a high tyre pressure. Furthermore measurements have been carried out of the rolling resistance of a tyre of the dimension 7.50-14 caused by dry snow at different speeds. This tyre is especially intended for friction measurements (ASTM tyre). These measurements were performed at a static wheel load of 4.800 n and at speeds of 50, 65 and 80 km/h. The rolling resistance increased proportionally with increasing speed within the interval of speed used. The speed dependence of the rolling resistance increased with the snow depth. /TRRL/

• Corporate Authors:

  Swedish National Road and Transport Research Institute (VTI)

  Linköping,   Sweden  SE-581 95
• Authors:
  • Kihlgren, B
• Publication Date: 1977

Language

• Swedish

Media Info

• Features: Figures; Photos; Tables;
• Pagination: 32 p.

Subject/Index Terms

• TRT Terms: Aircraft; Force; Measurement; Pressure; Rolling contact; Snow; Speed; Static loads; Tires; Wheel loads; Wheels
• Old TRIS Terms: Aircraft tires; Resistance
• ITRD Terms: 5440: Contact (tyre road); 5421: Force; 6136: Measurement; 5412: Pressure; 1063: Railway network; 2552: Snow; 5408: Speed; 1381: Tyre; 1372: Wheel
• Subject Areas: Aviation; Pavements; Vehicles and Equipment; I23: Properties of Road Surfaces; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00172460
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: VTI Rpt 128 Monograph
• Files: ITRD, TRIS
• Created Date: Apr 26 1978 12:00AM