Abstract: High temperature probes and methods for assembling high temperature probes are disclosed. The high temperature probes may include a rod with a thermocouple embedded within the rod, and a ceramic matrix composite sheath substantially surrounding the rod. The high temperature probes may also include an outer metal tube surrounding a portion of the rod, and an inner metal tube positioned between the alumina rod and the outer metal tube, the inner metal tube being configured to prevent the rod from spatial displacement with respect to the outer metal tube.

Abstract: High temperature probes and methods for assembling high temperature probes are disclosed. The high temperature probes may include a rod with a thermocouple embedded within the rod, and a ceramic matrix composite sheath substantially surrounding the rod. The high temperature probes may also include an outer metal tube surrounding a portion of the rod, and an inner metal tube positioned between the alumina rod and the outer metal tube, the inner metal tube being configured to prevent the rod from spatial displacement with respect to the outer metal tube.

Abstract: The present invention relates to a combustion temperature sensor, and, more particularly, to a combustion temperature sensor that measures infrared radiation emitted at several preselected wavelengths from a flame and/or a flame's hot gas at a turbine inlet location and applies the energy signals. to a calculation model to yield temperature.

Abstract: The present invention relates to a combustion temperature sensor, and, more particularly, to a combustion temperature sensor that measures infrared energy emitted at several preselected wavelengths from a flame and/or a flame's hot gas at a turbine inlet location and applies the energy signals to a calculation model to yield temperature.

Abstract: The present invention relates to a combustion temperature sensor, and, more particularly, to a combustion temperature sensor that measures infrared energy emitted at several preselected wavelengths from a flame and/or a flame's hot gas at a turbine inlet location and applies the energy signals to a calculation model to yield temperature.

Abstract: A high temperature gas stream optical flame sensor for flame detection in gas turbine engines, and method for fabricating same is provided. The sensor generally comprises a silicon carbide photodiode and silicon carbide based amplification hardware for generating a signal indicative of the presence of the flame. In a preferred embodiment, the photodiode and amplification hardware are disposed within a sensor housing and the photodiode is situated within a fuel/air premixer.

Abstract: A high temperature gas stream optical flame sensor for flame detection in gas turbine engines, and method for fabricating same is provided. The sensor generally comprises a silicon carbide photodiode and silicon carbide based amplification hardware for generating a signal indicative of the presence of the flame. In a preferred embodiment, the photodiode and amplification hardware are disposed within a sensor housing and the photodiode is situated within a fuel/air premixer.

Abstract: A high temperature gas stream optical flame sensor for flame detection in gas turbine engines, the sensor generally comprising a silicon carbide photodiode and silicon carbide based amplification hardware for generating a signal indicative of the presence of the flame, in some embodiments the photodiode and amplification hardware being disposed within a sensor housing, in another embodiment for use in an aeroderivative premixed combustion system, the photodiode being situated within a fuel/air premixer.

Abstract: A monolithically fabricated magnetically-actuatable opto-mechanical on/off switch includes a pair of planar optical waveguides, the first waveguide of the pair being fixed in position and the second waveguide of the pair being movable between a conducting orientation wherein it is in optical alignment with the one waveguide and a non-conducting orientation wherein it is not in optical alignment with the one waveguide. A ferromagnetic component is fixedly secured to the movable second waveguide for movement therewith as a unit. A magnet may be provided for moving the ferromagnetic component, and hence for moving the movable second waveguide between the conducting and non-conducting orientations.

Abstract: A low torque magnetic pick-off assembly has both a stationary magnet and a magnet mounted on a rotating member. The stationary magnet is oriented parallel to the axis of the rotating member and is used to establish a magnetic field in a field guide passing through a coil. The magnet on the rotating member modulates the magnetic field passing through the coil thereby inducing an output voltage in the coil. The output voltages indicates the passage of the magnet on the rotating member past the stationary magnet.

Abstract: A Speed Sensor for a rotating member utilizes a magneto optic switch and a magnet mounted in the vicinity of the rotating member. Under normal conditions the magnetic field is at right angles to the axis of sensitivity of the switch thereby blocking light transmission through the switch. When a ferrous tooth on the rotating member passes the sensor, the magnetic field is distorted due to the change in reluctance caused by passage of the tooth thereby generating a magnetic field component along the switch axis of sensitivity turning the switch on and producing an output speed signal.

Abstract: A Speed Sensor for a rotating member utilizes a magneto optic switch and a magnet mounted in the vicinity of the rotating member. Under normal conditions the magnetic field is at right angles to the axis of sensitivity of the switch thereby blocking light transmission through the switch. When a ferrous tooth on the rotating member passes the sensor, the magnetic field is distorted due to the change in reluctance caused by passage of the tooth thereby generating a magnetic field component along the switch axis of sensitivity turning the switch on and producing an output speed signal.

Abstract: A flowmeter with an optical pick-off includes a turbine and a swirl generating impeller having magnets mounted on their periphery. Positioned on the exterior of the flowmeter housing in line with the magnets are monolithic Faraday effect optical switches. Each time the magnets pass by its associated Faraday switch the switch is actuated to produce an output pulse.

Abstract: An angular momentum mass flow meter with an optical fiber readout extending into and out of the flowmeter housing.

Abstract: A monolithic optical switch has one or more Faraday effect polarization rotation layers of bismuth doped gadolinium deposited on opposite sides of an optically inactive substrate. A non-magnetic reflecting surface is deposited on one side of the substrate over the rotator layer. A polarizing pair (crossed polarizer and analyzer elements) is deposited in a side-by-side arrangement over the Faraday rotator layer on the other side of the substrate. Plane polarized light from an optical fiber passes through the polarizer element, the rotator layer(s) and the substrate to the reflecting surface and is reflected back to the analyzer element on the other side. The presence of a magnetic field results in the rotation of the plane of polarization of the light so that passage of the reflected light through the analyzer to an output optical fiber depends on the presence or absence of the magnetic field.