Extendable/retractable airfoil assembly for fixed wing aircraft
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United States of America Patent
Stats
-
Jun 5, 2001
Issued Date -
N/A
app pub date -
Sep 22, 1999
filing date -
Apr 10, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A retractable airfoil assembly (20) augments the wing surface area (28) of an aircraft (22) enabling it to fly without stalling at reduced speeds during takeoff and landing. The airfoil assembly includes flexible sails (42, 44) and a furling mast (24) for extending and retracting the sails. The furling mast includes a furling drum mounted for clockwise and counterclockwise rotation on a static tube (50). The flexible sail assembly also includes guide tracks (80) located along a leading edge (101) or tailing edge (40) of the wings. The tracks guide the flexible sails during extension and retraction. A drive cable (26) extends and retracts the sails (42, 44) along the guide tracks and maintains tension in the sails while they are extended.
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Cited Art Landscape
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