Aerodynamic drag reduction devices for surface vehicles
US3934922A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Sep 5, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D35/001
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Apparatus combined with or combinable with a vehicle body having a longitudinally elongated corner from which body surfaces extend at an angle, one of the surfaces presented forwardly toward oncoming air flow, and the other surface extending generally rearwardly away from that corner, the apparatus comprising PA1 A. means for preventing, reducing, or delaying separation of the flow boundary layer from said other surface rearwardly of said corner at normal operating speeds of the vehicle, PA1 B. said means comprising a longitudinally elongated protrusion having a substantially smooth, arcuate outer surface projecting smoothly outwardly of a first of said body surfaces said protrusion surface having a first longitudinally elongated terminal extent merging toward said first body surface in spaced relation to said corner, and second longitudinally elongated terminal extent merging toward a second of said body surfaces proximate said corner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.