Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Patent
1981-01-29
1982-06-15
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
416141, B64C 2738
Patent
active
043348254
ABSTRACT:
The neck of a hingeless helicopter rotor wing blade is provided with a damping device effective to dampen lead-lag movements of the rotor wing blade. For this purpose the damping device comprises at least two stiff plates secured to opposite sides of the blade neck by a plurality of elastomeric members glued or bonded to the respective stiff plate and to the blade neck at spaced intervals. The difference of deformation between the stiff plates and the blade neck causes a deformation of the individual members in directions substantially across the longitudinal blade direction (in lead-lag plane). The spacings between adjacent members are located where the damping action is inherently low.
REFERENCES:
patent: 3874815 (1975-04-01), Baskin
patent: 3999886 (1976-12-01), Ormiston et al.
patent: 4037988 (1977-07-01), Laird
patent: 4093400 (1978-06-01), Rybicki
patent: 4097193 (1978-06-01), Brunsch et al.
patent: 4120610 (1978-10-01), Braswell et al.
patent: 4252503 (1981-02-01), Wackerle et al.
patent: 4273511 (1981-06-01), Mouille et al.
patent: 4299538 (1981-11-01), Ferris et al.
United States Patent Application Ser. No. 015,311, filed on Feb. 26, 1979, nventor: Peter-Martin Wackerle et al.
Braun Dieter
Buchs Wolfgang
Kirchner Andreas
Fasse W. G.
Kane, Jr. D. H.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
Powell Jr. Everette A.
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