Cross-beam helicopter rotor with readily replaceable snubber

Details Cross-beam helicopter rotor with readily replaceable snubber Cross-beam helicopter rotor with readily replaceable snubber

1978-07-12

1981-01-13

Vrablik, John J.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

416140, 416141, B64C 2738, B64C 2772

Patent

active

042446775

ABSTRACT:
A cross-beam helicopter rotor in which the torque tube enveloping the flexible spar is supported in relation thereto by an elastomeric primary snubber which is readily replaceable in the field and which utilizes a snubber retainer plate bonded to the spar with an elastomer layer of selected shape factor so that the retainer plate remains adhered to the spar while accommodating all blade and spar pitch and flapping motions and so that the retainer plate elastomer layer is substantially more durable than the elastomer layers of the primary snubber. This primary snubber may be used in combination with an auxiliary snubber.

REFERENCES:
patent: 3700352 (1972-10-01), Gorndt
patent: 4053258 (1977-10-01), Mouille
patent: 4087203 (1978-05-01), Ferris
patent: 4093400 (1978-06-01), Rybicki

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