Trim control system for reduced drag
US4382282A · kind A · utility
11Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1980 |
| Grant date | May 3, 1983 |
| Priority date | — |
| Expiry date | Sep 8, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0066
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In an automatic flight control system of the type having automatic stabilizer trim control, the long term, constant altitude cruise trim threshold limits which alter the maximum and minimum pull-in/drop-out deflection of the elevator relative to the stabilizer minimize the steady-state downward deflection of the elevator, thereby reducing unnecessary aerodynamic drag and realizing significant savings in fuel costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.