VTOL altitude hold system with automatic ground effect compensat

Details VTOL altitude hold system with automatic ground effect compensat VTOL altitude hold system with automatic ground effect compensat

1983-02-16

1986-07-29

Chin, Gary

Boots, shoes, and leggings

244 1713, 244180, G06F 1550, G06G 778

Patent

active

046033882

ABSTRACT:
During a transition of a VTOL aircraft such as a helicopter, from one altitude held without its ground effect zone to another to be held within its ground effect zone, or vice versa, a collective stick position synchronizer which can memorize the proper trim condition at the previous altitude in conjunction with the stick force sensor out-of-detent logic and a low vertical speed sensor, together constituting a ground effect zone detector, is used to drive the collective stick trim actuator in a direction which relieves any force being exerted by the pilot in order to maintain the new commanded altitude.

REFERENCES:
patent: 3250121 (1966-05-01), Schwartz
patent: 3800127 (1974-03-01), Knemeyer et al.
patent: 4005835 (1977-02-01), Gerstine et al.
patent: 4345195 (1982-08-01), Griffith et al.

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