Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including movement limit stop or damping means
Patent
1976-09-15
1978-04-25
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Including movement limit stop or damping means
416107, 416135, B64C 2748
Patent
active
040860248
ABSTRACT:
A rotor blade is connected to a rotor hub, for example, in a helicopter, by t least one pair of damping elements and by a blade connector bolt. The damping elements comprise metal discs and layers of elastomeric material arranged in sandwich fashion. The damping elements are arranged symmetrically relative to the rotor blade, as well as to the blade connector bolt. Furthermore, the damping elements are connected in a force transmitting manner to the rotor blade on the one hand and to the rotor hub on the other hand.
REFERENCES:
patent: 1948457 (1934-02-01), Larsen
patent: 1950080 (1934-03-01), Cierva
patent: 2122450 (1938-07-01), Campbell
patent: 3556673 (1971-01-01), Killian
patent: 3790302 (1974-02-01), Pascher
patent: 3967918 (1976-07-01), Mouille
Frommlet Hubert
Mautz Karl-Heinz
Schwarz Alois
Weiland Emil
Fasse W. G.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
Powell Jr. Everette A.
Roberts W. W.
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