THE WIND-AVERAGED DRAG COEFFICIENT APPLIED TO HEAVY GOODS VEHICLES

The wind-averaged drag coefficient provides a means of assessing the aerodynamic performance of a road vehicle in relation to the wind conditions encountered in-service. This report provides justification for its use, together with details of a study of the various approximations which can be made in its evaluation. The choice of a suitable height at which to define the wind speed is discussed, as are techniques for correcting observed wind speeds to this standard height. Appendix 1 contains a description of a computer program for evaluating wind-averaged drag coefficients which is at present in use at TRRL. /Author/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Ingram, K C
• Publication Date: 1978

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 20 p.
• Serial:
  • Australian Road Research Board Symposium
  • Publisher: ARRB

Subject/Index Terms

• TRT Terms: Aerodynamics; Computer programs; Equipment; Trucks; Vehicle performance; Velocity; Wind
• Old TRIS Terms: Wind velocity
• ITRD Terms: 5492: Aerodynamics; 6410: Coefficient; 5911: Efficiency; 1078: Lock (waterway); 1236: Lorry; 8645: Software; 5408: Speed; 2554: Wind
• Subject Areas: Highways; Motor Carriers; Vehicles and Equipment;

Filing Info

• Accession Number: 00188206
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Supp. Report 392
• Files: ITRD, TRIS, ATRI
• Created Date: Mar 28 1979 12:00AM