Hamilton Sundstrand Patente

An environmental control system of an aircraft includes a ram air circuit (30) with a ram air shell (32) having at least one heat exchanger positioned therein, a dehumidification system (60) arranged in fluid communication with the ram air circuit, a compression device (40) arranged in fluid communication with the ram air circuit and the at least one dehumidification system, and an expansion device (52) arranged in fluid communication with the ram air circuit. At least one of the compression device and the expansion device is selectively operable to supplement the ram air within the ram air circuit to meet a demand of the aircraft.

According to an aspect, an inductor damper circuit includes a shared magnetic core, a primary winding (410), and a secondary winding (412). The primary winding includes an inductor winding of a first wire gauge wound about the shared magnetic core. The secondary winding includes a resistive damper winding of a second wire gauge that is less than the first wire gauge and wound about the shared magnetic core in contactless magnetic coupling with the primary winding.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Disclosed is a system for transporting fluid, including a first vessel (120) and a second vessel (130), the system including: a split volume tank (140) comprising a first volume (160) and a second volume (170), wherein when one of the volumes expands the other volume collapses; and a four way valve (190) fluidly connecting the first and second volumes and first vessel and the second vessel, the four way valve comprising a plurality of passages including a first passage (290) and a second passage (300), the four way valve being controllable between a plurality of orientations including: a first orientation in which the first passage fluidly connects the first volume and the first vessel and the second passage fluidly connects the second volume and the second vessel; a second orientation in which the first passage fluidly connects the first volume and the second vessel and the second passage fluidly connects the second volume and the first vessel.

A heat exchanger is provided. The heat exchanger includes a core (112) that receives a plurality of mediums (101,102). The heat exchanger includes a manifold (110). The manifold includes a first end (131) that receives a first medium of the plurality of mediums. The manifold includes a second end (132) that intersects the core at a manifold/core interface (140). The manifold includes a plurality of individual layers (150) that provide gradual transitions for the first medium from the first end to the second end to reduce or eliminate discontinuities at the manifold/core interface that cause stress to the heat exchanger.

A vane pump (100) includes a liner (101) defining a cammed inner surface (103), a rotor (105) rotatably disposed within the liner (101) that has a plurality of vane slots, and a plurality of vanes (107, 109) slidably disposed within vane slots of the rotor (105) and configured to extend away from the rotor (105) and contact the cammed inner surface (103) of the liner (101). The plurality of vanes (107, 109) include at least one sentinel vane (109) that is configured to allow detection of wear on the sentinel vane (109).

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

A torque motor (110) for a servovalve is provided, the torque motor (110) comprising an armature (115) and a first pole piece (112). The first pole piece has a first portion (112c, 112e) and a second portion (113) that is selectively moveable relative to the first portion (112c, 112e) such that a size of an air gap (116a, 116c) formed between the second portion (113) and the armature (115) is adjusted in response to the movement of the second portion (113) relative to the first portion (112c).

A ram air turbine (RAT) system (10) is provided. The RAT system (10) includes a main generator (20), a RAT power generation unit (30), first circuitry (40), a storage device (50) and second circuitry (60). The main generator (20) and the RAT power generation unit (30) are connectable to an aircraft bus by the first circuitry (40). The first circuitry (40) includes a first switch (45) which is controllable such that power is selectively provided to the aircraft bus from one of the main generator (20) and the RAT power generation unit (30). The storage device (50) is connectable to the aircraft bus by the second circuitry (60). The second circuitry (60) includes a second switch (62) which is controllable such that power is selectively provided to the aircraft bus from the storage device (50).

A fuel system (24) includes a fuel passage (28) for conveying a hydrocarbon fuel. The hydrocarbon fuel is reactive with oxygen to form carbonaceous deposit. A device is disposed in the fuel passage such as to be exposed to the hydrocarbon fuel. The device includes first and second surfaces that are spaced from each other by a clearance gap into which the hydrocarbon fuel can infiltrate. The first and second surfaces are in sliding motion with respect to each other when the device is in operation. A frangible fluoropolymer coating is disposed on at least one of the first or second surfaces along the clearance gap. The coating is subject to the carbonaceous deposit adhering thereon. The coating is configured to allow portions to release by shearing off with the carbonaceous deposit under stress from the sliding motion to uncover a newly exposed face of the coating.

An electric motor controller, 202, includes controller electronics, 208, configured to control an electric motor, 204. The electric motor controller, 202, also includes a thermoelectric cooler in thermal communication with the controller electronics. The thermoelectric cooler is configured to receive a braking current associated with braking of the electric motor and provide cooling to the controller electronics.

An example overvoltage protection device (18) includes a switch (28) and a surge protection device (30) that is selectively activated by actuating the switch. The switch is actuated in response to a voltage. An example method of absorbing an overvoltage includes sensing a voltage, and selectively activating a surge protection device (30) in response to the sensed voltage.