Aeronautics and astronautics – Aircraft control – Automatic
Patent
1976-11-08
1978-08-15
Kunin, Stephen G.
Aeronautics and astronautics
Aircraft control
Automatic
73178T, 244182, 244183, 340 27SS, 364428, 364431, G05D 112
Patent
active
041067312
ABSTRACT:
The inventive system requires that normal approach indicated airspeed and a predetermined approach groundspeed be used as the approach criteria, whichever is the least, compared to its own predetermined index value. These two values are the commanding functions fed to a fast/slow indicator and to any auto-throttle device on the approach, along with a "caution tailwind" warning device to warn the pilot whenever the groundspeed exceeds true airspeed by 5 knots or more, for example. If this warning activates, he should consider cancelling the approach and choose an approach from a different direction, determined by surface wind and his drift at the time of cancellation. This condition is caused by a tailwind component at altitude, the value of which the pilot can determine from his airspeed and groundspeed indications.
REFERENCES:
patent: 2218907 (1940-10-01), Donnelly et al.
patent: 2223224 (1940-11-01), Newhouse
patent: 2766953 (1956-10-01), Cummings
patent: 3131390 (1964-04-01), Condie et al.
patent: 3443073 (1969-05-01), Cohen
patent: 3621212 (1970-11-01), Hobbs et al.
patent: 3996589 (1976-12-01), Breese
Haefliger William W.
Kunin Stephen G.
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