Vertical velocity indicator
US5396425A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vertical velocity indicator for aircraft is described which comprises an inlet open to ambient static pressure; a pressure transducer communicating with the inlet for detecting changes in ambient static pressure and providing output signals corresponding to equilibrium with ambient pressure at level flight, a static pressure increase corresponding to rate of descent, and a static pressure decrease corresponding to rate of climb of the aircraft; a pitch gyroscope for detecting pitch of the aircraft and providing a corresponding output signal; a signal processor for the output signals from the pressure transducer and pitch gyroscope and a graphics generator operatively connected to a visual display of aircraft pitch and vertical velocity, the display including an aircraft silhouette defining aircraft pitch, and a color coded background and a preselected plurality of spaced level altitude lines which present preselected intervals of altitude and which move on the background at a rate corresponding to the rate of climb or descent of the aircraft, and a plurality of simulated cloud figures which move on the background with the lines for enhancing realism of the silhouette display and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.