1978-07-10
1980-12-02
Hum, Vance Y.
33264, 33275, G09B 908
Patent
active
042363241
ABSTRACT:
A gimballed sight tube is mechanically positioned in alignment with a pilot's forward line of sight and it is set at a predetermined glide path angle. During a landing approach, the runway will be visible within the sight tube on or in proximity to the center of two cross hairs. Any deviation of the runway from the center of the cross hairs indicates vertical deviation of the aircraft from the predetermined glide path and appropriate corrective action may be taken by the pilot.
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