AERODYNAMIC DISTURBANCE CAUSED BY A FOUR-WHEEL VEHICLE AND ITS EFFECTS UPON A STATIONARY MOTORCYCLE

Field experiments were conducted to measure the aerodynamic disturbance generated by four-wheeled vehicles (two vans and a truck) and its effect on a stationary motorcycle (with dummy rider) in terms of lateral force and yawing and rolling moments. It was found that the change in wind pressure caused by a passing four-wheeled vehicle and its effects on a motorcycle increase at a greater rate as the lateral distance between the two vehicles decreases. While a larger vehicle creates a greater disturbance, its effects upon a motorcycle can sometimes be smaller when the lateral distance between the two vehicles is relatively small. These results are similar to those reported for car-by-car aerodynamic effects.

• Supplemental Notes:
  • Conference held in Washington, D.C., 18-23 May 1980. Also published in HS-029 680, International Motorcycle Safety Conference Proceedings. Volume 2, p 545-62.
• Corporate Authors:

  Motorcycle Safety Foundation

  780 Elkridge Landing Road
  Linthicum, MD  United States  21090
• Authors:
  • OISHI, T
  • Sano, Y
  • Machii, T
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Aerodynamics; Motorcycles; Passing; Wind pressure
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00389651
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: HS-029 685
• Files: HSL, USDOT
• Created Date: Oct 30 1984 12:00AM