System for assisting hovering aircraft to land on the platform of a vessel
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United States of America Patent
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Feb 26, 1991
Grant Date -
N/A
app pub date -
Sep 13, 1989
filing date -
Sep 14, 1988
priority date (Note) -
Expired
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Abstract
The aircraft (1) incorporates means for emitting a conical light beam (14). The vessel (2) incorporates photosensitive cells (6) materializing the outline of the beam on the vessel, which is an ellipse (7). Means determine the equation of the ellipse (17) and, from this, landing data which are displayed on a panel (25).
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