Abstract: A fuel gauging system for a fuel tank containing fuel and an ullage gas in an ullage of the tank. The fuel gauging system pressurizes/depressurizes the ullage gas and measures changes in conditions of the ullage gas to determine ullage gas volume and thus volume of the fuel. The system may infer one or more values in the volume calculation to reduce the number of measurements involved. The inferred values may come from known operating characteristics of an inerting system integrated with the fuel gauging system. The system may use a control valve that operates within the limits of a climb-dive valve to generate the system response. The control valve may control delivering or receiving ullage gas from another tank to preserve the ullage gas. An inerting system may be integrated into such a paired-tank fuel gauging system.

Abstract: A bulbless thermostatic expansion valve has enhanced joining of the power element to the valve body. The valve body includes an upper extension that extends from a main body portion, an end of the upper extension being crimped into a lip relative to an opposing surface of the main body portion thereby defining a recess that receives a portion of the housing of the power element to the join the power element to the valve body. The lip may be formed by roll forming the end of upper extension of the valve body. The housing of the power element may be a multipart housing including an upper housing and a lower housing, with a diaphragm being secured between the upper housing and the lower housing, and an end of the lower housing is the portion of the housing of the power element that is received within the recess.

Abstract: A fuel gaging system, such as may be used in determining an amount of fuel in an aircraft fuel system, includes a capacitance probe and a capacitance measurement circuit component including high resistance elements. The capacitance measurement circuit component includes a first excitation generator, an excitation wire connected between the first excitation generator and the capacitance probe, and a signal wire connected to the capacitance probe with the capacitance probe being connected between the excitation wire and the signal wire, wherein the first excitation generator generates an input signal applied to the excitation wire and an output signal is read from the signal wire to determine a capacitance at the capacitance probe.

Abstract: A sea water desalination system and reverse osmosis element for use in a desalination system are provided. The reverse osmosis element includes a body of media material having opposed first and second ends. First and second end cap assemblies are adjacent the first and second ends of the body. A shell of wound composite material encapsulates and retains the body and first and second end cap assemblies together to define an integrated pressure vessel. Methods of assembling are also provided.

Abstract: A filter media, filter element, filter system and methods are provided. The filter media provides improved filter characteristics including water separation efficiency. The filter media may include one or more of increased surface roughness and/or embossments. The filter media may be provided by pleated filter media.

Abstract: A bidirectional isolated high voltage DC-DC converter includes a primary three-level circuit, a capacitor-inductor-inductor-capacitor (CLLC) resonant tank network connected to the primary three-level circuit, a secondary three-level circuit connected to the CLLC resonant tank network, and a controller that controls one or more of the components of the bidirectional isolated high voltage DC-DC converter. The primary three-level circuit and the secondary three-level circuit include capacitor middle points having respective voltages that are actively controlled by the controller. The controller implements a novel space vector PWM (SVPWM). The secondary capacitor middle point is chassis grounded to provide an optimal system level partial discharge hazard management for aircraft. vehicle and vessel applications. GaN power MOSFETs are used for high frequency operation of the power switches.

Abstract: Disclosed are thermoplastic vulcanizates comprising a plastic phase and a rubber phase and process for preparing such thermoplastic vulcanizates, wherein the plastic phase comprises a thermoplastic polymer and the rubber phase comprises a carboxylated nitrile rubber.

Abstract: A filter element including a canister, media, and a spinning disc element is provided. The canister circumscribes a central axis. A tap plate is at an end of the canister having a central threaded opening along the central axis of the canister. The tap plate includes a first outer opening radially spaced between the central opening and a periphery of the tap plate. The disc element is supported for rotation on the tap plate. A first keyed protrusion projects outwardly from the disc element. The keyed protrusion defines a first flow opening. The spinning disc element is rotatable about the central axis. The first outer opening is in fluid communication with the first opening of the first keyed protrusion such that fluid can into or out of the canister. Filter systems including a filter head to which the filter element may be mounted are also provided.

Abstract: A sea water desalination system and reverse osmosis element for use in a desalination system are provided. The reverse osmosis element includes a body of media material having opposed first and second ends. First and second end cap assemblies are adjacent the first and second ends of the body. A shell of wound composite material encapsulates and retains the body and first and second end cap assemblies together to define an integrated pressure vessel. Methods of assembling are also provided.

Abstract: A pump system including a prevention mechanism for preventing excessive fluid temperature buildup of system fluid. The overheat prevention mechanism includes a thermally-responsive control component (130) made with a thermally-responsive material. The thermally-responsive control component is located in the pump system (112) such that the thermally-responsive material is in thermal communication with the system fluid for effecting a change in temperature of the thermally-responsive material. The thermally-responsive material is configured to have an activation temperature that is a predefined amount less than a maximum operating temperature of the system fluid. The thermally-responsive control component is configured to cooperate with a pump control mechanism in the system to decrease pump output pressure in response to the thermally-responsive material being heated by the fluid to a temperature that is equal to or greater than the activation temperature of the thermally-responsive material.

Abstract: A coupling member for a blind mate fluid coupling includes a housing and a valve body that is self-centering and alignable relative to the housing. The valve body may include at least two radial shoulder portions or abutments that are configured to engage at least two corresponding radial abutments of the housing to improve self-centering when in a decoupled state. A biasing member may urge the valve body abutments against the corresponding housing abutments to compensate for misalignment and/or provide self-centering in both a decoupled and mated state.

Abstract: A hose fitting assembly for a collapse-resistant hose, includes a sleeve having a forward and rearward sleeve end portion, the rearward sleeve end portion having an opening adapted to receive a hose end portion; a fitting having an optionally flared rearward fitting end portion operatively coupled to the forward sleeve end portion, the rearward fitting end portion having an internal surface forming an internal cavity configured to receive the hose end portion; and an optionally threaded nipple operatively couplable to the fitting and extending rearwardly through the internal cavity of the fitting, the nipple being configured to fit within an internal hose passage. The fitting assembly may include a seal mounted in fitting and sealable against the core tube upon crimping. The fitting assembly may include a support ring between skived and unskived hose regions. A collapse-resistant hose includes a carcass with an optional unbonded sacrificial layer is also provided.

Abstract: A motor assembly has an enhanced retention system for minimizing axial and radial movement of the bearings and output shaft. A front endbell assembly is fixed to a front end of the motor, the front endbell assembly including a plastic front endbell and a front bearing assembly through which a driving end of the output shaft extends. The plastic front endbell is over-molded about the front bearing assembly and elasticity of the plastic front endbell operates to preload the front bearing assembly to restrict axial movement of the front bearing assembly. Similarly, a rear endbell assembly is fixed to a rear end of the motor opposite from the front end, the rear endbell assembly including a plastic rear endbell and a rear bearing assembly into which a rear end of the output shaft extends. The plastic rear endbell is over-molded about the rear bearing assembly and elasticity of the plastic rear endbell operates to preload the rear bearing assembly to restrict axial movement of the rear bearing assembly.

Abstract: A control circuit includes a latching relay, a power loss activation circuit, and a watchdog circuit. A microcontrol unit (MCU) communicates with the watchdog circuit in a normal operation of the control circuit. As an action of a failsafe precaution in the event of a main power loss or a component failure, the MCU stops communicating with the watchdog circuit, at which point the watchdog circuit instructs the power loss activation circuit to continue operation of the control circuit. The control circuit further operates to implement mitigation operations in the event of a main power loss or component failure.

Abstract: Improvements to filtration and vessels such as for filtration and coalescing of gas streams are shown. A filter element with a partial treated region and untreated region such as providing different surface energies or other filtration characteristics are provided. Various keying arrangements for compatibility and/or rotational locking are shown between the filtration vessel, a tubular coalescing baffle, and/or filter element. The tubular coalescing baffle also may include non-louvered pore structure, which provides for more even flow in a two stage type filtration vessel to prevent premature exiting and reduction of flow velocities along the second stage, and/or may additionally or alternatively include drainage apertures such as drain slot formed along a gravitational bottom or otherwise to facilitate additional drainage of coalesced liquid as opposed to letting such liquid be forced through fluid velocity toward the open end of the tubular baffle.

Abstract: A filter media that includes a substrate layer, which includes a sheet having a fibrous polyester and cellulose blend with less than 80% polyester fibers by weight. The sheet further includes a membrane layer that is made from ePTFE. The membrane layer is thermally laminated to the one side of the substrate layer. In particular embodiments, the filter media can be pleated into a filter element that has more than five pleats per inch.

Abstract: A sealing element (10) includes a sealing lip (16), an outer shell (12) defining an outer perimeter of the sealing element (10), and an energizing porous matrix structure (18) that is formed integrally with the sealing lip (16) or the outer shell (12) and extends from the outer shell (12) to the sealing lip (16). The energizing porous matrix structure (18) is used to tune a sealing force of the sealing element (10).

Abstract: A filter-drier unit for a refrigerant includes an exterior housing formed of a hard material, and a desiccant material supported within the exterior housing and being formed of a metal-organic framework material having inorganic metal ions and bridging ligands that link the metal ions. The metal-organic framework has a three-dimensional permanently porous structure that has at least one chemically tunable characteristic, such as pore size, pore volume, and surface area.