Abstract:
An exemplary flow control device assembly for a turbomachine includes a flow control device configured to move between a first position and a second position. The flow control device in the first position forces more flow through a plurality of cooling holes than the flow control device in the second position. The plurality of cooling holes are upstream the flow control device relative a direction of flow through the turbomachine.
Abstract:
An exemplary geared turbomachine fluid delivery system includes a first fluid path configured to communicate fluid from a supply to a gear system of a geared turbomachine, and a second fluid path configured to communicate fluid from the supply to the gear system. The fluid introduced to the gear system by the first fluid path is cooler than that the fluid introduced to the gear system by the second fluid path.
Abstract:
An example method of securing a bond film to a fuel cell component includes positioning the bond film adjacent the fuel cell component and melting the bond film using thermal energy from an injection molded seal.
Abstract:
An example generator cooling arrangement includes an electrochemical hydrogen pump configured to receive and adjust a fluid containing hydrogen and to provide a refined supply of hydrogen. An electric power generator receives the supply of hydrogen. The refined supply of hydrogen is used to remove thermal energy from the electric power generator.
Abstract:
An example method of operating a fuel cell system includes calculating the rate of water produced in the fuel cell stack, determining the rate of water exiting the system, and controlling the condenser temperature to maintain the cathode gas exit temperature from the condenser below the temperature required to maintain water balance in the fuel cell system. The method collects the condensed vapor as water and purges a portion of the collected water containing contaminants from the system.
Abstract:
An example method of communicating with an aircraft includes receiving a text message with an aircraft avionics box and initiating an operation with the aircraft avionics box based on the text message.
Abstract:
An example adjustable showerhead assembly (10) includes a shroud (14) and a showerhead (18) movable between a first position attached to the shroud and a second position detached from the shroud. A flexible conduit (22) communicates fluid to the showerhead. The shroud contains the flexible conduit when the showerhead is in the first position.
Abstract:
An example control arrangement includes a power supply, a first load operative to receive power when coupled to the power supply, and a second load operative to receive power when coupled to the power supply. A receiver is programmable to couple the first load, the second load, or both to the power supply in response to a wireless signal. A switch includes a wireless transmitter portion powered by a self-energizing portion. A wireless transmitter portion communicates the wireless signal to the receiver in response to an actuation of the switch.
Abstract:
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a rotor having a pretrench that receives at least a portion of a tip of a stator, the portion of the tip extending radially into the pretrench.
Abstract:
An auxiliary power unit bracket, according to an exemplary aspect of the present disclosure includes, among other things, a gearbox mounting face and a compartment mounting face, the gearbox mounting face configured to attach to an auxiliary power unit gearbox below a sump level line, the compartment mounting face configured to attach to a portion of an auxiliary power unit compartment above the sump level line.