Abstract: Techniques for reconfigurable heat sinks are disclosed. In one embodiment, a compute system includes a heat sink includes a core fin assembly with two removable lateral fin assemblies. The lateral fin assemblies may be above one or more components of the compute system, such as one or more memory modules. With the lateral fin assemblies in place, the cooling capacity of the heat sink is increased, but the more memory modules may be difficult or impossible to service. With the lateral fin assemblies removed, the memory modules can be serviced (e.g., replaced). In another embodiment, a lateral fin assembly of a heat sink is attached to a heat pipe. The lateral fin assembly can rotate relative to the heat pipe, allowing the lateral fin assembly to fit within a 2U form factor in one configuration and allow access to components under the lateral fin assembly in another configuration.

Abstract: Two liquid cooling mechanisms are provided for cooling integrated circuit components immersed in an open bath immersion tank. In the first mechanism, heat generated by high-thermal design power (TDP) components is absorbed by a working fluid passing through cold plates coupled to the high-TDP components. The cold plates are part of direct liquid cooling loops attached to supply and return manifolds fluidly connected to a cooling distribution unit. In the second mechanism, integrated circuit components not coupled to any of the direct liquid cooling loops dissipate heat directly to the immersion fluid. In some embodiments, the tank is a closed bath immersion tank and heat captured by the working fluid is reclaimed and converted to electricity. Working fluid flow rate can be adjusted based on integrated circuit component power consumption levels to achieve a desired working fluid temperature as it enters an energy reclamation unit.

Abstract: A menthol-containing solids composition comprising or consisting of (a) a solid menthol component consisting of bodies having a content of 95 wt. % or more menthol, based on the total weight of the bodies, and (b) a solid silicon dioxide component comprising or consisting of particles having a particle size of not more than 100 ?m, wherein particles of the silicon dioxide component adhere to the surface of the bodies of the menthol component and wherein the amount of the silicon dioxide component is not more than 4 wt. % and the amount of the menthol component is at least 95 wt. %, in each case based on the total weight of the solids composition.

Abstract: A menthol-containing solids composition comprising or consisting of (a) a solid menthol component consisting of bodies having a content of 95 wt. % or more menthol, based on the total weight of the bodies, and (b) a solid silicon dioxide component comprising or consisting of particles having a particle size of not more than 100 ?m, wherein particles of the silicon dioxide component adhere to the surface of the bodies of the menthol component and wherein the amount of the silicon dioxide component is not more than 4 wt. % and the amount of the menthol component is at least 95 wt. %, in each case based on the total weight of the solids composition.

Abstract: A menthol-containing solids composition comprising or consisting of: (a) a solid menthol component consisting of bodies having a content of 95 wt. % or more of menthol, based on the total weight of the bodies, and (b) a solid anticaking agent, comprising or consisting of particles having a particle size of not more than 100 ?m, wherein particles of the anticaking agent adhere to the surface of the bodies of the menthol component, wherein the solid anticaking agent is chosen from the group consisting of calcium phosphate, magnesium phosphate, magnesium hydroxycarbonate, magnesium oxide, mixtures of magnesium oxide and silicon dioxide, mannitol, calcium silicate, magnesium silicate, talc, polydimethylsiloxane, Al, Ca, K, Na, Mg or NH4+ salts of edible fatty acids, and mixtures thereof, and wherein the content of the anticaking agent is not more than 8 wt. % and the content of the menthol component is at least 91 wt. %, in each case based on the total weight of the solids composition.

Abstract: Methods and apparatus are provided for active motion damping of a spacecraft whose attitude control system (SACS) has experienced a partial failure. In a preferred embodiment, the apparatus comprises, an attitude control processor (ACP), a motion damping controller (MDC) coupled to the ACP, a control moment gyro (CMG) comprising a gimbal loop controller (GLC) coupled to the MDC and a gimbal motor with input coupled to the GLC and gyroscopic torque output coupled to the satellite. Normally, a gimbal rate command (GRC) from the ACP passes to the GLC for execution to rotate the CMG gimbal and the coupled satellite. If the ACP output becomes invalid, the MDC assumes control and can modify CMG operation in several ways to safely decelerate a moving satellite without hazardous mechanical stress. Following such active motion damping, the CMG remains quiescent until a RESET is received whereby further valid GRCs are then executable.

Abstract: A valve is provided for use on a control moment gyroscope (CMG) having a housing separating an internal environment from an external environment. The valve includes a valve housing, a valve element, and bellows. The valve housing is configured to couple to the CMG housing and includes an inner surface defining a cavity, an outer surface, and an opening extending therebetween. The valve element is disposed within the valve housing cavity and is movable between a closed position, in which fluid is prevented from flowing through the valve housing opening, and an open position, in which fluid may flow through the valve housing opening. The bellows is disposed within the valve housing and coupled to the valve element and has an internal chamber. The bellows selectively moves the valve element closed and open in response to a differential pressure between the bellows internal chamber and the valve housing cavity.