Helicopter rotors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 29, 1981
Grant Date -
N/A
app pub date -
Nov 7, 1979
filing date -
Nov 16, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A helicopter rotor has at least one pair of diametrically opposed rotor blades interconnected by a strap member flexible in torsion and in a plane perpendicular to a plane of rotation and stiff in a plane coincident with the plane of rotation. A torsionally flexible tie-bar having a tensile elastic modulus greater than that of the strap member is extended between pivotal attachments adjacent opposed ends of the interconnecting strap member. In operation, a major portion of centrifugal loads caused by the rotating blades is carried by the tie-bar.
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