Head mounted flight training apparatus

Details Head mounted flight training apparatus Head mounted flight training apparatus

1977-02-15

1978-08-15

Pinkham, Richard C.

2432, 35 12G, 350332, G09B 908

Patent

active

041062175

ABSTRACT:
Instrument flight training glasses including a voltage controlled, liquid crystal lens system having upper and lower contiguous lens systems independently operable with respect to each other, for limiting a pilot's vision to the instrument control panel of his aircraft when so desired. The lens systems are opacity variable for simulating flight through particular weather and cloud conditions while providing instant clearing of the lower lens system as the pilot views the aircraft control panel. During a landing approach an interlock system is manually actuable to prevent opaque obscuring of the lens system.

REFERENCES:
patent: 3111675 (1963-11-01), Mora
patent: 3281965 (1966-11-01), Irwin
patent: 3287828 (1966-11-01), Cumming
patent: 3342540 (1967-09-01), Abeggi et al.
patent: 3436840 (1969-04-01), Noxon
patent: 3873804 (1975-03-01), Gordon
patent: 3942270 (1976-03-01), Hoyt et al.
patent: 3989355 (1976-11-01), Wilmer
patent: 4011002 (1977-03-01), Ebihara et al.
patent: 4039803 (1977-08-01), Harsch
Dobbins, J. P., "Variable-Transmittance Visor for Helmet-Mounted Display", Oct. 1973.

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