Redundant rotor blade retention system

Details Redundant rotor blade retention system Redundant rotor blade retention system

1978-05-26

1981-04-28

Vrablik, John J.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416140, 416146A, 403348, B64C 2748, F16B 720

Patent

active

042642779

ABSTRACT:
A redundant rotor blade retention system is disclosed. A secondary load path is provided in the event the primary load path of the rotor blade retention system fails. Both the primary and the secondary load path permit rotation of the rotor blade about its pitch axis. The rotor blade is connected to a shaft which forms a portion of the rotor hub. The shaft is pivotally connected to the housing of the rotor hub by a tie-bar, tension-torsion strap, or the like. Flanges which form an integral part of the hub housing and the shaft overlap and are spaced apart from one another. In the event the tie-bar or tension-torsion strap fails, the flanges come in contact with one another and act as a secondary load path. Lubrication is provided so that relative motion about the rotor blade pitch axis may occur between the two flanges thus permitting rotor blade pitch motion.

REFERENCES:
patent: 2047776 (1936-07-01), Hafner
patent: 2228243 (1941-01-01), Baker
patent: 2510377 (1950-06-01), Carr
patent: 2600531 (1952-06-01), Hafner
patent: 2643581 (1953-06-01), Wehrenfennig
patent: 2648387 (1953-08-01), Doman
patent: 3297094 (1967-01-01), Kisovec
patent: 3545880 (1970-12-01), Moville
patent: 3824037 (1974-07-01), Mautz et al.
patent: 4080098 (1978-03-01), Watson

Affiliated with

Also associated with

Rating

Redundant rotor blade retention system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Redundant rotor blade retention system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Redundant rotor blade retention system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-861701