System for measuring aircraft engine thrust
US4833911A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1988 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Jul 1, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/133
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention comprises a system for measuring the thrust delivered by aircraft engines which rely on induced flow for their propulsive effect. In the preferred embodiment, for use in conjunction with turboprop engines, the system includes mechanisms for measuring static pressure immediately in front of the turbopropellers and for measuring free stream ambient pressure. These pressure measurements are furnished to a computational device such as air data computer for use in calculating a static to ambient pressure ratio which correlates with commanded thrust in accordance with mach number. The pressure ratio information may be displayed for direct use by the aircraft pilot in determining thrust or adjusted for the effects of mach number and then displayed as an indication of net thrust, and/or supplied to other aircraft instrument systems requiring thrust information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.