A bearing assembly is provided. The bearing assembly may include an inner race configured to couple to a shaft, an outer race disposed around the inner race, a bearing support structure coupled to the outer race, and a housing disposed around the bearing support structure. The housing and the bearing support structure may define a squeeze-film damper annulus configured to receive an aerated damping fluid. The aerated damping fluid may be provided from a fluid pump and an air supply port.

Devices, systems, and methods for shock absorption are provided herein. Collapsible shock absorption devices have an inner wall having at least one orifice, an outer wall, and a fluid sealed within the outer wall can mitigate sharp increases in force during loading and can better distribute loading forces. In some cases, collapsible shock absorption devices disclosed herein are used for prevention of injury to a biological tissue of a subject or damage to an inanimate object.

The present subject matter relates to systems, devices, and methods for controlling fluid flow transfer in footwear in which a front chamber has a first inlet and a first outlet, a rear chamber has a second inlet and a second outlet, a first valve assembly is connected between the second outlet and the first inlet and is configured to allow fluid to pass unidirectionally from the rear chamber to the front chamber, and a second valve assembly is connected between the first outlet and the second inlet and is configured to allow fluid to pass unidirectionally from the front chamber to the rear chamber. In addition, one or both of the front chamber or the rear chamber can include one or more openings therethrough that are configured to allow fluid to pass into or out of the respective chamber with respect to a surrounding environment.

The present subject matter relates to systems, devices, and methods for controlling fluid flow transfer in footwear in which a front chamber has a first inlet and a first outlet, a rear chamber has a second inlet and a second outlet, a first valve assembly is connected between the second outlet and the first inlet and is configured to allow fluid to pass unidirectionally from the rear chamber to the front chamber, and a second valve assembly is connected between the first outlet and the second inlet and is configured to allow fluid to pass unidirectionally from the front chamber to the rear chamber. In addition, one or both of the front chamber or the rear chamber can include one or more openings therethrough that are configured to allow fluid to pass into or out of the respective chamber with respect to a surrounding environment.