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US 10,501,175 B2Granted
Teetering rotor hub system
AssigneeBell Helicopter Textron Inc.
InventorsDrew Alan Sutton, Frank Brad Stamps
Life of this patent
Estimating the term…
Abstract
The present invention includes a rotor hub system, comprising: a teetering rotor hub disposed about a mast, the teetering rotor hub comprising: a first and a second yoke; each connected to a set of rotor blades, wherein the second set of rotor blades and the first set of rotor blades are disposed in a common plane, but the first and the second yoke do not come in contact.
Claims23
A rotor hub system, comprising:
- a first teetering rotor hub disposed about a mast, the first teetering rotor hub comprising:
- a first yoke that is substantially flat having a bridge shape on a first plane;
- a first set of rotor blades connected to the first yoke, the first set of rotor blades comprising a first rotor blade connected at a first end of the first yoke and a second rotor blade connected at a second end of the first yoke opposite the first end;
- a second teetering rotor hub separate from the first teetering rotor hub, the second teetering rotor hub comprising:
- a second yoke that is substantially flat having an inverse bridge shape on a second plane;
- and
- a second set of rotor blades connected to the second yoke, the second set of rotor blades comprising a third rotor blade connected at a first end of the second yoke and a fourth rotor blade connected at a second end of the second yoke opposite the first end, wherein the first and second sets of rotor blades are in the same plane and the first and second yokes never come in contact.
4 more elements
A tail rotor hub system, comprising:
- a first yoke that is substantially flat having a bridge shape and forming a first plane and a second yoke that is substantially flat disposed about a rotor mast having an inverse bridge shape and forming a second plane, wherein the first plane and the second plane are parallel and the first and second yokes do not come in contact, wherein a first portion of the first yoke overlaps a second portion of the second yoke, the first portion and the second portion spaced separately from each other, the first yoke configured to teeter about a first teetering axis, and the second yoke configured to teeter about a second teetering axis, wherein the first teetering axis and the second teetering axis are disposed in a common plane;
- a first set of rotor blades connected to the first yoke, the first set of rotor blades comprising a first rotor blade connected at a first end of the first yoke and a second rotor blade connected at a second end of the first yoke opposite the first end;
- and
- a second set of rotor blades connected to the second yoke, the second set of rotor blades comprising a third rotor blade connected at a first end of the second yoke and a fourth rotor blade connected at a second end of the second yoke opposite the first end.
1 more element
A method, comprising:
- providing a first teetering rotor hub about a mast, the first teetering rotor hub comprising:
- a first yoke comprising two first that is substantially flat plates lying on parallel first planes;
- a first set of rotor blades connected to the first yoke, the first set of rotor blades comprising a first rotor blade connected at a first end of the first yoke and a second rotor blade connected at a second end of the first yoke opposite the first end;
- providing a second teetering rotor hub about the mast and separate from the first teetering rotor hub, the second teetering rotor hub comprising:
- a second yoke comprising two second substantially flat plates lying on parallel second planes, the second planes being parallel to the first planes;
- and
- a second set of rotor blades connected to the second yoke, the second set of rotor blades comprising a third rotor blade connected at a first end of the second yoke and a fourth rotor blade connected at a second end of the second yoke opposite the first end;
- and
- disposing a first teetering axis of the first teetering rotor hub and a second teetering axis of the second teetering rotor hub in parallel planes.
6 more elements
Dependencies are inferred from the claim text.