Loading...
Please wait, while we are loading the content...
Similar Documents
Performance of the boeing lrv wheels in a lunar soil simulant. report 2: effects of speed, wheel load, and soil
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Melzer, K. |
| Copyright Year | 1971 |
| Description | Two nearly identical Boeing-GM wire-mesh Lunar Roving Vehicle (LRV) wheels were laboratory tested in a lunar soil simulant to determine the influence of wheel speed and acceleration, wheel load, presence of a fender, travel direction, and soil strength on the wheel performance. Constant-slip and three types of programmed-slip tests were conducted with a single-wheel dynamometer system. Test results indicated that performance of single LRV wheels in terms of pull coefficient, power number, and efficiency were not influenced by wheel speed and acceleration, travel direction, the presence of a fender, or wheel load. Of these variables, only load influenced sinkage, which increased with increasing load. For a given slip, the pull coefficient and power number increased with increasing soil strength. However, for a given pull coefficient or slope, slip was less in firmer soil; thus, the power number decreased and efficiency increased with increasing soil strength. |
| File Size | 5707419 |
| Page Count | 97 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730004536 |
| Archival Resource Key | ark:/13960/t9v16sq50 |
| Language | English |
| Publisher Date | 1971-12-01 |
| Access Restriction | Open |
| Subject Keyword | Performance Tests Vehicle Wheels Acceleration Physics Lunar Roving Vehicles Lunar Soil Soil Mechanics Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
