Digital altimeter computer
US4292671A · kind A · utility
14Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Jul 30, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new and improved computing apparatus for determining aircraft altitude has a pressure transducer to sense atmospheric pressure at which the aircraft is located, and from this and a preset local ground level atmospheric pressure reading, actually solve a non-linear altitude-pressure equation. The computed altitude is used in conjunction with a time measurement to determine aircraft vertical rate. The computed altitude also specifies an address in a memory circuit, with the data stored at such address being the grey code which is transmitted to others for air traffic control purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.