Navigational system of high-speed aircraft
US4175285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1967 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Aug 25, 1987 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/867
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Navigational system for the guidance of automatically piloted aircraft during high-speed (e.g. supersonic) overland flights, the predetermined course of the aircraft including a series of spaced-apart measuring zones registered on a progressively displaceable film strip or other recording medium in the form of two-dimensional arrays of prerecorded altitude markings representing the profile of the overflown terrain within each zone. Each array encompasses several regions of uncertainty defined as a range of possible horizontal deviation of the automatic pilot from the charted course; the markings, which may be in the form of identical asymmetrical figures indicating by their angular orientation the reference parameter (absolute or relative altitude) of the terrain within each elemental area of a region of uncertainty, are electro-optically compared with a bench mark indicating, by its own angular orientation in response to altitude soundings aboard the aircraft, the value of the reference parameter of the terrain actually overflown, the comparison yielding a projected contour line whereby, through a rapid succession of soundings and comparisons within each zone, the true position of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.