Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Patent
1985-07-09
1987-06-30
Garrett, Robert E.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
416141, B64C 2738
Patent
active
046767207
ABSTRACT:
A bearingless hub structure for rotary-wing aircrafts comprising a hub body ecured to a rotor shaft, a plurality of radially extending flexbeams integrally formed with the hub body, and pitch housings enclosing each of the flexbeams in spaced relationship, the pitch housing having a radially outer end portion rigidly secured to an inboard end of a rotor blade and a radially inner end portion supported by a spherical bearing in the vicinity of a root end of said flexbeam.
The flexbeam consists of a flexible element of low lead-lag stiffness and a torsion element of low torsional stiffness located radially outside the flexible element. The flexible element consists of two beam-like members having radially inner ends spaced in the lead-lag direction and extending radially outward with narrowing the distance between them, the beam-like member having radially outer end connected to a radially inner end of the torsion element.
REFERENCES:
patent: 3261407 (1966-07-01), Culver et al.
patent: 4008980 (1977-02-01), Noehren et al.
patent: 4292009 (1981-09-01), Weiland et al.
patent: 4299538 (1981-11-01), Ferris et al.
patent: 4427340 (1984-01-01), Metzger et al.
patent: 4516909 (1985-05-01), Caramaschi et al.
Bandoh Shun-ichi
Kakinuma Asao
Kashiwagi Masahiro
Niwa Yoshiyuki
Wakatsuki Tadashi
Garrett Robert E.
Kawasaki Jukogyo Kabushiki Kaisha
Kwon John
Technical Research and Development Institute, Japan Defense Agen
LandOfFree
Bearingless hub structure for rotary-wing aircrafts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bearingless hub structure for rotary-wing aircrafts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bearingless hub structure for rotary-wing aircrafts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-445318