System for determining position of normal shock in supersonic flow
US5072612A · kind A · utility
7Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M9/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Light from a plurality of light emitting diodes is transmitted through optical cables (12) to a lens system. The lenses (56, 58) expand and collimate the light and project it in a sheet (16) across the supersonic inlet of an aircraft power plant perpendicular to incoming airflow. A normal shock bends a portion of the sheet of light (16). A linear array of a multiplicity of optical fiber ends collects discrete samples of light. The samples are processed and compared to a predetermined profile to determine the shock location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.