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An investigation of drag reduction for a standard truck with various modifications
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Muirhead, V. U. |
| Copyright Year | 1981 |
| Description | A wind tunnel investigation was conducted to determine the influence of several physical variables on the aerodynamic drag of a standard truck model. The physical variables included: a cab mounted air deflector; a boattail on the rear of the cargo compartment; flow-vanes on the front of the cargo compartment; and a forebody fairing over the cab. Tests were conducted at yaw angles (relative wind angle) of 0, 5, 10, 20, and 30 degrees and Reynolds numbers of 3.4 x 100,000 to 6.1 x 100,000 based upon the equivalent diameter of the vehicles. The forebody fairing and the flow-vane with the closed bottom were very effective in improving the flow over the forward part of the cargo compartment. The forebody fairing provided a calculated fuel saving of 5.6 liters per hour (1.5 gallons per hour) over the baseline configuration for a ground speed of 88.6 km/hr (55 mph) in national average winds. |
| File Size | 1414995 |
| Page Count | 60 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810014507 |
| Archival Resource Key | ark:/13960/t71w0b981 |
| Language | English |
| Publisher Date | 1981-05-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Trucks Aerodynamic Drag Energy Conservation Reynolds Number Wind Tunnel Tests Flow Resistance Streamlining Streamlined Bodies Yaw Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
