Abstract: The present disclosure includes a combination sensor and pressure relief valve. The combination sensor and valve may be used with existing aircraft wheel systems. Wheel systems utilizing the combination sensor and valve are also disclosed.

Abstract: A wheel monitoring system comprising a wheel, a bearing mechanically coupled to the wheel, an axle mechanically coupled to the bearing, and a wheel speed transducer (WST) disposed in the axle. The WST may be configured to detect vibrations. A method of monitoring a bearing is also provided and may comprise measuring a vibration of the bearing, comparing the vibration of the bearing to a predetermined vibration, and estimating a remaining useful life of the bearing.

Abstract: Systems and methods for controlling a solenoid may include measuring a current flowing through a solenoid, and detecting characteristics of the current flowing through the solenoid. The characteristics may be used to determine a state of the solenoid. Characteristics of the current comprise may include local extrema of the current, rate of change of the current, and/or discrete values of the current. The solenoid may comprise a bistable device.

Abstract: A wheel monitoring system comprising a wheel, a bearing mechanically coupled to the wheel, an axle mechanically coupled to the bearing, and a wheel speed transducer (WST) disposed in the axle. The WST may be configured to detect vibrations. A method of monitoring a bearing is also provided and may comprise measuring a vibration of the bearing, comparing the vibration of the bearing to a predetermined vibration, and estimating a remaining useful life of the bearing.

Abstract: The present disclosure includes a combination sensor and pressure relief valve. The combination sensor and valve may be used with existing aircraft wheel systems. Wheel systems utilizing the combination sensor and valve are also disclosed.

Abstract: A system for measuring tire pressure on an aircraft includes a wheel with a tire pressure. A tire pressure sensor on the wheel may be configured to output an electronic measurement of the tire pressure. A transmission device may be electrically coupled to the first tire pressure sensor and configured to transmit the first electronic measurement. A hubcap may be on the first wheel with a transmission device mounted to the hubcap.

Abstract: Systems and methods for assigning addresses to one or more components, such as luminaires, in a network. In one example the luminaires include one or more lamp sub-modules. An example method sends an address command from a master control unit to all luminaires over a communication broadcast databus, and switches the one or more luminaires to an addressing mode of operation based on the sent address command. A token signal is sent on a second serial databus to the one or more luminaires and address information is sent on the communication databus. The address information is recorded at the one or more luminaires based on the received token signal. Addresses are automatically assigned to the associated lamp sub-modules based on physical location and the recorded address information and assigned lamp sub-module addresses are sent to the master control unit. The sent address information and lamp sub-module addresses are saved.

Abstract: A system and method for implementing an LED-based luminaire (100) incorporates one or more color channels (32-n). The luminaire includes a controller (50) that uses optical sensing and feedback to control LEDs (30A) in each channel to deliver a consistent intensity and/or color output. The optical feedback loop may provide measured intensity and/or color of the luminaire's output to the luminaire controller. The controller may then adjust the current, pulse width modulation (PWM) duty cycle, or both, which are delivered to discrete color channels of the luminaire to obtain the desired intensity and/or color.

Abstract: The present invention relates to a two stage variable flow valve assembly for use in fluid handling. The valve assembly includes a body with a flow restrictor disposed therein to define two internal chambers which are closed at one end by a wall and open at the opposite end by a discharge opening. A valve having a bulb and a profiled valve stem extends axially through and is movable within the internal chambers to open and close the valve assembly for flow therethrough. Flow is halted through the valve assembly when a portion of the profiled valve stem enters the flow restrictor, prior to the bulb's closing of the discharge opening.