Abstract: Automatic electromyography (EMG) electrode selection for robotic devices is disclosed. A plurality of signals from a corresponding plurality of sensors coupled to a skin of a user is received. For each pair of at least some pairs of the plurality of sensors, a sensor pair signature is generated based on differences in signals that are generated by the respective pair of sensors. Each of the sensor pair signatures is compared to a predetermined sensor pair signature to identify a particular pair of sensors. A signal difference between two signals generated by the particular pair of sensors is subsequently utilized to generate a command to drive a motor.

Abstract: An optical device is disclosed. The optical device has an optical path and includes a first polarizing filter positioned in the optical path that is configured to receive electromagnetic radiation (EMR) from a scene and to transmit a first subset of EMR comprising EMR in a first waveband that has a first polarization orientation and EMR in a second waveband. A second polarizing filter is positioned in the optical path downstream of the first polarizing filter that is configured to receive the first subset of EMR and to transmit a second subset of EMR comprising EMR in the second waveband that has a second polarization orientation and the EMR in the first waveband that has the first polarization orientation.

Abstract: Gradient refractive index (GRIN) materials can include multi-phase composites having substances with differing refractive indices disposed non-uniformly within one another. Particular glass composites having a gradient index of refraction can include: an amorphous phase, and a phase-separated region disposed non-uniformly within the amorphous phase. The glass composites include a mixture containing: GeZ2 and A2Z3 in a combined molar ratio of about 60% to about 95%, and CsX and PbZ in a combined molar ratio of about 5% to about 40%, where A is As, Sb or Ga, X is Cl, Br or I, and Z is S or Se. When A is As, the glass composites include PbZ in a molar ratio of about 15% or less. The amorphous phase and the phase-separated region have refractive indices that differ from one another. More particularly, A is Ga or As, X is Cl, and Z is Se.

Abstract: Methods and mechanisms for correcting a wavefront error in an optical element are disclosed. A wavefront error that is downstream of an optical element in an optical path is determined. A refractive index prescription that reduces the wavefront error is determined. A beam of energy is directed at a surface of the optical element in accordance with the refractive index prescription to alter the surface to change an index of refraction at multiple locations on the surface.

Abstract: The present disclosure relates to apparatuses and methods for stimulating a magneto-optical defect material with defect centers in a magnetic detection system using a stimulation process to significantly increase magnetic sensitivity of the detection system. The system utilizes a Ramsey pulse sequence pair or a shifted magnetometry adapted cancellation (SMAC) pair to detect and measure the magnetic field acting on the system. Utilizing a pair of magnetic measurements that are approximately in quadrature improves the dynamic range and accuracy of the magnetic detection.

Abstract: A technique relates to adaptive flight display. The technique includes rendering a first flight instrument display during autonomous flight operation of an aircraft, the first flight instrument display comprising autonomous mode information; determining, by a processor, that a trigger is met to transition from the first flight instrument display for the autonomous flight operation to a second flight instrument display for providing an increased perception of aircraft operating parameters for at least one of increased human awareness and human operation of the aircraft, the trigger being associated with a requirement for human intervention; and in response to the trigger being met, rendering the second flight instrument display for the human operation of the aircraft, the second flight instrument display comprising additional information.

Abstract: A method and a computer network of interconnected computer nodes, one assigned a role of a deployer node, the deployer node creating and executing a rule-based block, and assigning others of the computer nodes a role of sensor node or a role of display node. The deployer node maintains addresses of the sensor nodes and the display nodes, the sensor nodes add sensor track data to create linked blocks, and the display nodes read the sensor track data in the linked blocks. The rule-based block includes a sensor add rule which checks that only computer nodes assigned the role of the deployer node can assign a computer node the role of sensor node. The rule-based block includes a sensor track data add rule which checks that only the computer nodes assigned the role of sensor node can request to add new sensor track data to create the linked blocks.

Abstract: Methods and systems for providing a cold plate assembly include providing a base and a cover. The cover can be fixedly coupled to the base. Each of the base and the cover can include spaced internal ribs, which can form flow paths when the base and cover are fixedly coupled together. The internal ribs of the base and the cover can have spaced tabs that can be fixedly coupled to the other of the base or the cover. The base and the cover may also include spaced external or outer sacrificial ribs.

Abstract: A system comprising a blade pitch system having a set of locking holes. A pitch drive assembly is coupled to the blade pitch system and configured to rotate clockwise or counterclockwise within a range of angular degrees to adjust a blade pitch angle. The system includes a pitch lock pin-and-hole system including an interface plate and at least one blade pitch lock assembly coupled to the interface plate. Each lock assembly includes a locking pin having a pin center axis parallel with a center axis of a locking hole to engage a respective one locking hole of the set to lock the blade pitch angle.

Abstract: In one embodiment, systems and methods include using an automated laser system to remove a portion of a coating for nutplate installation. An automated laser system comprises a laser scanner and a laser head, wherein the laser head is coupled to the laser scanner. The laser head comprises a containment unit and a vacuum connector wherein the vacuum connector is disposed on a first side of the containment unit. The laser head further comprises a camera system, a light source, a first actuator, and a second actuator all disposed on a top surface of the containment unit. The laser head further comprises an end piece, wherein the second actuator is configured to displace the end piece.

Abstract: A foldable rotor blade assembly includes a first section including a connector assembly including a plurality of through holes and a second section including a connector having a plurality of openings. The connector is receivable within a hollow interior of the first section. A plurality of fasteners insertable within the plurality of through holes and the plurality of openings. A fold assembly is operably coupled to both the first section and the second section. The fold assembly defines a blade fold axis about which the second section is rotatable to transform the rotor blade assembly between a normal configuration when the connector is received within the hollow interior of the first section, and a folded configuration when the connector has rotated outside of the hollow interior of the first section.

Abstract: A rotor assembly includes a first rotor hub and a second rotor hub. The second rotor hub is coupled to the first rotor hub via a shaft fairing. The first rotor hub has a flat first surface coupled to the shaft fairing and a curved second surface opposite the flat first surface. The second rotor hub has a flat first surface on the lower side and a curved second surface opposite the flat first surface.

Abstract: A linear multiband waveguide feed network device, which includes a first section, a second section, a third section and an inverse-ridge receive (Rx)-reject filter. The second section is coupled to the first section via a first split-plane. The third section is coupled to the second section via a second split-plane. The inverse-ridge Rx-reject filter is implemented as a first half-portion and a second half-portion. The first half-portion and the second half-portion are implemented in the second section and the third section, respectively. The first split-plane and the second split-plane are on a zero-current region of the device.

Abstract: An aircraft and method of operating an aircraft. A sensor measures an air velocity at a location a selected distance from the aircraft. A processor determines an effect of the air velocity on an accuracy metric of a first flight course of the aircraft, changes from the first flight course to a second flight course when the accuracy metric of the first flight course meets a threshold and operates the aircraft according to the second flight course.

Abstract: Systems, apparatus, and related methods for distributing power associated with radars are disclosed. A disclosed bus bar assembly for a radar power distribution system includes a first vertical bus and first horizontal buses electrically coupled to the first vertical bus. The bus bar assembly also includes a second vertical bus and second horizontal buses electrically coupled to the second vertical bus. The bus bar assembly also includes first blind mate connectors coupled to the first horizontal buses whereby each of the first horizontal buses includes a pair of the first blind mate connectors configured to removably connect to an LRU. The bus bar assembly also includes second blind mate connectors coupled to the second horizontal busses whereby each of the second horizontal buses includes a pair of the second blind mate connectors configured to removably connect to an LRU.

Abstract: A scalable interferometric imaging and laser communications system integrated as a single satellite payload is provided. Multiple lenslets are coupled via associated waveguides to a single multi-mode interferometer in an N-arm beam combination using a PIC based architecture. The multi-mode interferometer is coupled to a communication sensor via a splitter and to an imaging sensor via an array waveguide grating, which in turn are coupled to a processor. The system interferes all input waveguides simultaneously and provides OPD control over individual input waveguides.

Abstract: A method and a computer network of interconnected computer nodes, one assigned a role of a deployer node, the deployer node creating and executing a rule-based block, and assigning others of the computer nodes a role of sensor node or a role of display node. The deployer node maintains addresses of the sensor nodes and the display nodes, the sensor nodes add sensor track data to create linked blocks, and the display nodes read the sensor track data in the linked blocks. The rule-based block includes a sensor add rule which checks that only computer nodes assigned the role of the deployer node can assign a computer node the role of sensor node. The rule-based block includes a sensor track data add rule which checks that only the computer nodes assigned the role of sensor node can request to add new sensor track data to create the linked blocks.

Abstract: A rotating steering mirror assembly comprising a first wedge rotatable relative to a base and a second wedge rotatable relative to the first wedge to controllably tilt a mirror on an outward- or forward-facing surface of the second wedge. Respective motors can independently rotate the first and second wedges.

Abstract: A multiple layer hollow cylinder is provided. An inner air-tight material is wrapped about at least a portion of a mandrel to form a plurality of first material loops. Each first material loop subsequent to an initial first material loop at least partially overlaps a previous first material loop. A resin-infused fabric material is wrapped over the inner air-tight material to form a plurality of second material loops. Each second material loop subsequent to an initial second material loop at least partially overlaps a previous second material loop. An outer air-tight transparent material is wrapped over the resin-infused fabric material to form a plurality of third material loops. Each third material loop subsequent to an initial third material loop at least partially overlaps a previous third material loop. Energy is directed about the outer air-tight transparent material to cure the resin-infused fabric material to form a hollow cylinder.