Aircraft performance margin indicator
US4638437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Jun 25, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0083
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An aircraft performance margin indicator including a display (21) that, during takeoff and landing, informs the pilot of the ability of the aircraft to either stop safely or achieve a safe flying speed before reaching the end of the runway is disclosed. A plurality of dedicated microprocessors (41, 43, 45, and 47), each of which receives pertinent data about the aircraft, the runway and the existing environmental conditions, produce one or more symbol control signals. The symbol control signals control the position of symbols that form part of the display (21). The display scale is a normalized runway and the display includes an airplane symbol (23) that shows the location of the aircraft as the aircraft moves down the runway. The microprocessor controlled symbols include GO and STOP bugs (25 and 31) and a ROTATE bar (27). The ROTATE bar indicates the last point at which the aircraft can be safely rotated under present FFA regulations. The position of the GO bug (25) indicates the last point at which the application of maximum thrust will result in the aircraft reaching rotation speed (at the ROTATE bar position) and achieve a safe takeoff. The position of the STOP bug indicates th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.