Hingeless rotor with precompressed half-bearings supporting blad

Details Hingeless rotor with precompressed half-bearings supporting blad Hingeless rotor with precompressed half-bearings supporting blad

1999-04-26

2000-09-05

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416104, 416163, 416164, 416168R, 416214, 416207, B63H 106

Patent

active

061133523

ABSTRACT:
Each blade of the rotor has a rigid root oversleeve connected to a torsionable and flexible root strip by two laminated, spherical support half bearings, fixed by their outer frame with double rigid horns the lateral ends of which facing each other on each side of the strip and half bearings are clamped towards each other and against struts so as to allow a significant, calibrated pre-compression of the half bearings. The double horns and/or struts are fixed axially to the oversleeves by fixing elements distinct from the compression means of the double horns on the struts and perpendicular to these compression horns on the struts and perpendicular to these compression elements. One of the struts, possibly in a single piece with one double horn, is also in a single piece with a pitch lever.

REFERENCES:
patent: 4053258 (1977-10-01), Mouille
patent: 4244677 (1981-01-01), Noehren et al.

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