Patent
High temperature damper for a roller bearing
TLDR
In this paper, a high temperature damper for a roller bearing having a long shelf life and capable of withstanding temperatures in a gas turbine engine shaft is presented, which includes a damping chamber formed between a stator housing and the outer race of the bearing, and is filled with a liquid metal such as Gallium.Abstract:
A high temperature damper for a roller bearing having a long shelf life and capable of withstanding temperatures in a gas turbine engine shaft. The damper includes a damping chamber formed between a stator housing and the outer race of the bearing, and is filled with a liquid metal such as Gallium that has a paste-like consistency at room temperature so as not to flow and leak from the damping chamber, and a liquid-like consistency at about 1,500 degrees F. in order to withstand the extreme temperatures of a gas turbine engine. Seals having a U-shape cross section are made of a high temperature metal like Hastalloy or Hynes and enclose the liquid metal within the damping chamber.read more
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Patent
Rotary bearing arrangement
Max Fiedler,Jan Patrick Häntsche +1 more
TL;DR: A rotary bearing that includes an inner race and an outer race is configured between a rotor and a housing body as mentioned in this paper, and the outer race and the inner race are clamped and fixed in a predetermined position on the housing body by at least one of a holding device and a locking device of a material damping structure.
Patent
Active system for bearing oil damper supply and vibration control
TL;DR: In this paper, a bearing damping system includes a pump 72 configured to pump a fluid, and a variable position valve 78A,78B,78C having a plurality of open positions each configured to generate different pressures in the fluid downstream from the Variable position valve.
Patent
Rolling bearing device
TL;DR: In this article, a groove is formed on one end face side of a cage including a plurality of pockets for holding individually rolling elements which extends circumferentially along a full circumference of the cage about a rotational center thereof.
Patent
Rotating machinery with damping system
TL;DR: One embodiment of the present invention is a damping system for rotating machinery such as gas turbine engines as mentioned in this paper, and other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for damping systems.
Patent
Squeeze film damper bearing device
TL;DR: A squeeze film damper bearing device as mentioned in this paper includes an inner race that is fitted around an outer periphery of a rotating shaft, an outer race supported via an annular space on an inner periphery of the bearing sleeve provided on a bearing retaining member, and a plurality of rolling bodies that are disposed between the inner race and the outer race.
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Patent
Annular oil damper arrangement
TL;DR: In this paper, a fluid damper for controlling transverse orbital movement of a non-rotating cylindrical body is provided with a sealed, fluid filled reservoir in fluid communication with a vent opening disposed in a surrounding support member.
Patent
Squeeze film damper seal
TL;DR: Shaft damper bearing utilizing spaced apart piston ring seals to seal off an annular squeeze film space between the rings, includes diagonal surface cross-section ring grooves in the bearing housing with diagonal crosssection rings in the housing grooves adapted to engage a bearing support undergoing radial motion as discussed by the authors.
Patent
Center bearing assembly including support member containing rheological fluid
TL;DR: In this paper, a center bearing assembly includes a roller bearing adapted to receive and rotatably support a coupling shaft and a bracket adapted to be secured to a vehicle frame, and a support member includes a bladder formed of an elastomeric material.
Patent
Variable stiffness oil film damper
TL;DR: In this paper, the critical speed of a bearing supported rotating shaft is changed or controlled by dimensioning the oil squeeze film damper so that the volumen of oil is selected to produce a spring rate that when added to the mechanical spring rate will attain the overall spring rate of the system.
Patent
Apparatus and method for supporting a rotating shaft in a rotary machine
TL;DR: In this article, a rotary machine 10 includes a rotor shaft 40 and a support system 63 for the shaft, which includes a spring 68 and viscous damper 70 for removing oil from the damper at preselected rotor speeds.