Abstract: A polymerizable thermoset composition including a polymerizable organic cyanate ester resin and a polymerizable aryl ethynyl-terminated polyimide, a polymerized thermoset, a process for the production of the polymerized thermoset as well as the use of the polymerizable thermoset composition for the production of lightweight construction components, preferably carbon fiber composite materials (CFC), and a lightweight construction component, preferably carbon fiber composite material (CFC), containing the polymerized thermoset are described.

Abstract: The invention relates to a gear assembly (10) for use in a space craft for control of a moveable component thereof. The assembly comprises a load gear (11) in engagement with a drive gear (12) and an auxiliary gear (13). The drive gear (12) is coupled to a drive motor (14) so as to drive the load gear (11) in a first rotational direction. The auxiliary gear (13) is coupled to a retardation device (15) that is configured to passively resist the load gear (11) from rotating in the first rotational direction.

Abstract: Aspects of the present disclosure involve a system and method for generating noise waves at millimeter wave frequencies. A noise source generator is designed to be connected to a crystalline structure for efficient heat transfer and compatibility with millimeter wave receivers. The use of crystalline structure coupled to the noise source generator allows heat from a biasing device, such as a diode, to be carried away such that the diode is able to generate noise waves while being reversed biased without compromising the device. In another embodiment, the noise source generator includes the use of a backshort transmission line with vias that is connected to the biasing device for heat transfer from the biasing device to the backshort.

Abstract: An assembly for storing bicycles in an upright orientation and suitably with both wheels of the bicycles off the ground. The assembly is configured to suspend the bicycles from their front wheel by engaging the front tire of the bicycles, and without needing to engage the rim of the front wheel, or the frame of the bicycle. Moreover, the assembly is adapted to allow the bicycles located in the upright orientation to be moved while on the assembly from side-to-side to allow bicycles storage to be clustered together and a bicycle to be retrieve-from storage to be spaced further apart from adjacent bicycles.

Abstract: This disclosure provides systems, methods and apparatus for multi-channel satellite calibration. In one aspect, a calibration system can provide a transmit calibration signal based on a reference calibration signal to a satellite. The satellite can transmit back a receive calibration signal that can be obtained by the calibration system. Sub-carriers of the receive calibration signal can be compared with sub-carriers of the reference signal to determine adjustments to transmission properties of antennas of the satellite.

Abstract: A sensing orifice for an aircraft, an aircraft with such a sensing orifice and a method for assembling a sensing orifice for an aircraft are provided. The aircraft may be an airplane, a helicopter, a UAV, a drone or similar. The static sensing orifice includes a passage through an outer skin of the aircraft and a moisture protection body. The passage is designed to connect with a pressure line in the interior of the aircraft. The moisture protection body is gas-permeable and water-impermeable, and the moisture protection body is disposed such that the passage is gas-permeably and water-impermeably sealed. The method for assembling the static sensing orifice for the aircraft, includes the following steps: providing the passage through the outer skin of the aircraft for connecting to the pressure line in the interior of the aircraft, providing a gas-permeable and water-impermeable moisture protection body, and gas-permeable and water-impermeable sealing of the passage by the moisture protection body.

Abstract: A wheel alignment guide that provides a visual indication of the desired placement of an apparatus. The wheel alignment guide includes a body having an opening disposed therein. The wheel alignment guide is configured to surround a portion of the apparatus, such as a wheel, via the opening. In addition, the wheel alignment guide is adapted to rest on a ground surface, being held in place via a charge, such as an electrostatic charge created by static cling vinyl. A wheel of a medical device is disposed within the opening of the wheel alignment guide after a desired position of the medical device is selected. If the medical device is moved during a medical procedure, the medical device may be repositioned due to the placement of the wheel alignment guide. Accordingly, the wheel alignment guide eliminates the need for inefficient markers and potentially-dangerous adhesives, particularly in an operating room.

Abstract: Aspects of the present disclosure involve a system and method for performing radio frequency interferometry using optical fiber sensing. Optical fiber sensing is performed as a reference signal is defined and compared, in the optical domain, to incoming signals to obtain interference fringe patterns that can be used to decode phase shift offsets with respect to the designated reference signal. The phase shift offsets can be determined by first optically modulating the reference and incoming signals using a laser source as the carrier. In the optical domain, the reference and incoming signals are combined using an optical coupler and then converted back to the electrical domain for processing.

Abstract: A low electrical and thermal resistance FinFET device includes a semiconductor body, a fin body on the substrate wafer, an isolation structure forming a fin connecting region, a gate dielectric on the fin body extending above the isolation structure, a FinFET gate electrode on the gate dielectric, a heavily-doped buried layer in the semiconductor body extending under said fin, and a vertical conductive region extending from the semiconductor body surface to the heavily-doped buried layer. Additionally, a fin body-to-buried layer implanted region disposed in the fin connecting region provides a low electrical and thermal resistance shunt from the fin body to the heavily-doped buried layer.

Abstract: This automatic gain control circuit is provided with a variable gain amplifier for amplifying a received signal, has a small circuit size, and makes it possible to reduce the effect of superimposed external noise input within the frequency bandwidth of a received signal. The automatic gain control circuit supplies the output of the variable gain amplifier to an analog/digital converter and comprises: a frequency selection circuit that is connected to the output of the analog/digital converter and that selects a signal within the frequency bandwidth of a received signal, said signal having a narrower bandwidth than the frequency bandwidth; and a control signal generation circuit that generates a control signal for the variable gain amplifier on the basis of the strength of the signal selected by the frequency selection circuit.

Abstract: An electrical drive system for an aircraft includes: at least one first and one second electrical direct voltage sources for supplying a direct voltage, and a first and a second electrical machine modules configured to convert electrical alternating voltage into mechanical movement and vice versa. The first and second modules are connected to a first and a second power inverters, respectively. The first and second inverters are connected in series and the first and the second direct voltage sources are connected in series to generate an overall direct voltage to which the inverters are connected. The power inverters each has one voltage measuring device for measuring the power inverter direct voltage present at the respective inverter and a power inverter control device for controlling the operation of the inverters in accordance with the power inverter direct voltage.

Abstract: A method for implementing a simulation test comprising generating a first simulation context comprising a display of a first portion of a first virtual environment defined over 360° on a screen, the portion being projected over an angle of 180° and an avatar generated at a GPS position in the virtual environment. A generation of a second simulation context is activated comprising retrieving the position of the head and its orientation from a sensor, generating a second portion of the first virtual environment computed according to the position and orientation of the captured head, displaying the second portion on an optical unit of the helmet. The first and second portions coincide over an angle corresponding to that of the second portion for at least one position and one orientation of the predefined head.

Abstract: One or more embodiments of the present invention describe an apparatus and method to combine unequal powers. The apparatus includes a first input port, a second input port, and a combiner. The first input port is operably connected to a first power amplifier and is configured to receive a first power from the first power amplifier. The second input port is operably connected to a second power amplifier and is configured to receive a second power from the second power amplifier. The combiner is configured to simultaneously receive the first power from the first input port and the second power from the second input port. The combiner is also configured to combine the first power and second power to produce a maximized power. The first power and second power are unequal.

Abstract: An aluminum material for producing light-weight components includes aluminum (Al), scandium (Sc), zirconium (Zr) and ytterbium (Yb), where a weight ratio of scandium (Sc) to zirconium (Zr) to ytterbium (Yb) [Sc/Zr/Yb] is in a range from 10/5/2.5 to 10/2.5/1.25.

Abstract: A spacecraft communications payload includes a beam forming network (BFN), wherein the BFN includes a first feed waveguide and a first set of branch waveguides, each branch waveguide in the first set operating in a frequency band having a characteristic waveguide wavelength ?g1. A proximal portion of the first set of branch waveguides is communicatively coupled with the first feed waveguide. A distal portion of the first set of branch waveguides is communicatively coupled by way of an array of slots with a plurality of radiating elements. A separation distance between adjacent slots in the array is approximately equal to ?g, and the array of slots is configured as a honeycomb-like triaxial lattice. In some implementations, a compact BFN may be configured to simultaneously operate at two different polarizations (“dual-polarized”) and/or frequency bands (“dual-band”).

Abstract: An aircraft has a bearing structure, the bearing structure having at least one central fuselage and two pylons each situated at a distance laterally from the fuselage. In addition, the aircraft has a wing structure, at least four hub rotors, and at least one thrust drive. Each hub rotor is fastened to the bearing structure, has a propeller having two propeller blades, and produces, through rotation of the propeller, an upward drive force acting in the vertical direction on the aircraft. The thrust drive is produces a thrust force acting in the horizontal direction on the bearing structure. The pylons each have two hub rotors, the hub rotors being configured to arrest respective propeller blades of a hub rotor in a position relative to the pylons. In the arrested position, the propeller blades of a hub rotor do not extend beyond the outer dimensions of the pylons.

Abstract: A spacecraft includes a payload subsystem including a digital channelizer. The digital channelizer provides at least a portion of spacecraft command or telemetry functionality. The spacecraft may optionally also include a telemetry and command (T&C) subsystem, the T&C subsystem including one or more of a command receiver, a command decoder, a telemetry encoder and a telemetry transmitter. The digital channelizer may be communicatively coupled with at least one of the command receiver, the command decoder, the telemetry transmitter and the telemetry encoder.

Abstract: A simulation and verification system and method. An interoperability server provides a communications hub for communications between communicating nodes. Nodes connected to a first protocol data bus communicate in a first protocol, e.g., a half-duplex bus protocol. Nodes connected to a second protocol data bus communicate in a second protocol, e.g., a full-duplex bus protocol. A time synchronization bus provides time-frames for synchronizing operation of connected nodes. Interceptors optionally intercept communications between nodes.

Abstract: A method of fabricating a solar cell array on the surface of a support by providing an assembly fixture having a smooth, concave surface; mounting a film composed of ethylene tetrafluoroethylene (ETFE) directly on the surface of the fixture; mounting a film composed of a non-crosslinked silicone pressure sensitive adhesive directly over the ETFE film; mounting an array of interconnected solar cells directly over the adhesive film. An uncured supporting film composed of a composite material is mounted directly on the back side of the solar cells; and the film of composite material is co-cured so that the array of interconnected solar cells is bonded to the supporting film. The bonded and cured film of composite material and an array of interconnected solar cells with the ETFE film is then removed from the assembly fixture.

Abstract: A navigation system includes an image acquisition device for acquiring a range image of a target vehicle, at least one processor, a memory including a target vehicle model and computer readable program code, where the processor and the computer readable program code are configured to cause the navigation system to convert the range image to a point cloud having three dimensions, compute a transform from the target vehicle model to the point cloud, and use the transform to estimate the target vehicle's attitude and position for capturing the target vehicle.