Abstract:
An efficient method for manufacturing a partially cured composite component intended to be joined with other component or components to form a composite structure and a manufacturing method of the composite structure. The partial curing of a composite layup is achieved using a mold comprising heat conductive elements and insulating elements and applying heat and pressure over the mold. The heat conductive elements are used to transmit or dissipate heat to/from the composite layup. The insulating elements are used to prevent the transmission or dissipation of heat to/from the composite layup.
Abstract:
According to a first aspect, the subject matter disclosed herein relates to a decision aid method for maintenance operations of aircraft equipment, the aircraft including a maintenance system arranged to make a record of equipment failure messages and of equipment failure warning messages emitted during a flight, the method comprising extracting at least one combination of failure messages corresponding to failure messages recorded by the maintenance system during a flight and a set of previous flights; determining, as a function of the at least one extracted combination, a probability of occurrence of at least one warning message possibly accompanied by one or more failure messages.
Abstract:
A system for loading and unloading a cargo compartment of a vehicle, such as an aircraft, with a cargo receiving device is provided. The system includes a cargo receiving device including a base structure arrangement having a horizontal lower contact surface, and a locking mechanism configured to engage one or more corresponding holding members provided in a cargo compartment of a vehicle. The system also includes a transport device including a horizontal upper contact surface configured to be disposed in abutting contact to said lower contact surface, a drive unit configured to initiate horizontal movement of the transport device, a lift unit configured to initiate vertical movement of the upper contact surface, and an actuating unit configured to actuate the locking mechanism of the cargo receiving device.
Abstract:
A component includes at least a first sub-component and a second sub-component each fully or partially including metal or metal alloy material or having an at least partially metallized surface or surface region, the first sub-component and the second sub-component providing a pair of connection interfaces configured to establish a permanent connection of the first sub-component and the second sub-component, wherein at least one of the pair of connection interfaces comprises nanowires. The disclosure further provides a method for manufacturing such a component.
Abstract:
A method for establishing free-space data transmission channels between a movable network node and a spatially fixed network node includes collecting dynamic position information regarding movable network nodes and static position information relating to spatially fixed nodes, calculating parameters for the nodes from position information, creating a service level agreements list indicating transmission links to be set up between two or more of the nodes with predetermined service performance parameters, creating a prioritization list of the agreements based on the list, checking which of a selection of nodes are available for a directional free-space data transmission channel between the two or more of the nodes with the predetermined service performance parameters defined by the agreement having the highest priority in the prioritization list, and setting up a directional free-space data transmission channel between the two or more of the nodes using the selection.
Abstract:
To improve measurement or assessment of fatigue damage to parts, a computer-implemented method for measuring striation properties of fatigue striations on a sample surface of a part is disclosed. A sample surface is imaged using a scanning electron microscope to obtain a sample image potentially containing the fatigue striations. A sample image patch potentially containing fatigue striations is selected from the sample image. After normalizing the sample image patch and enhancing line-like regular structures contained in the sample image patch, the normalized image patch is autocorrelated, Radon transformed and spectrally analyzed. The resulting power spectrum of the transformed image patch contains information about striation properties of the fatigue striations contained in the sample image, if any fatigue striations are present. Furthermore, a system for performing the method is disclosed.
Abstract:
A free space optical communications terminal (100) including an optical arrangement of a quarter-wave plate (105), a Faraday rotator (110), a polarisation splitter (115), a first arm (120) comprising a receiver (126) and a transmitter (128), and a second arm (130) comprising a component (132) configured to utilise a received beam. The optical arrangement apportions a circularly polarised beam between the first and second arm.
Abstract:
An overcurrent protection circuit and a protection method for fast switching semiconductors includes a semiconductor switch unit having one or more semiconductor switches, a resistor element which generates a voltage signal depending on a current through the semiconductor switch unit, an amplification unit which amplifies the voltage signal, a comparator unit which compares the amplified voltage signal with a threshold value, and which generates a disable signal when the amount of the amplified voltage signal is greater than the threshold value. A switching device is switching off the semiconductor switch unit when the switching device receives the disable signal.
Abstract:
A filling level monitoring device for monitoring a filling level of a fluid in a container includes exciter(s), sensor(s), a signal source connected to the exciter(s), a processor, at least one spatial orientation and acceleration sensor, and a filling level indicator. The device uses the signal source and the exciter(s) to couple vibrational loads having multiple frequency components into the container. Sensors measure vibrations in the container after the exciters transmit the vibrational loads into the container. The processor performs spectral analysis of the input signal and of vibration signals from the sensors, comparing these respective spectral functions to extract resonance frequencies of the container, which are based on the spatial orientation of the container. The filling level indicator calculates a current filling level of the container from the extracted resonance frequencies and a spatial orientation signal from a spatial orientation sensor by correlating the collected data with reference data.
Abstract:
Systems and methods for data scheduling and queuing. A data network node is configured to transmit data in a store-and-forward fashion. The data network node includes a delay and validity determination module that determines and assigns a validity value to each data packet incoming via an input port based on a time stamp of the data packet, a current time value, an expected delay on a route of the data packet to its destination, and a packet urgency value. A scheduling module and a queue managing module execute their functions based on the validity value assigned to a data packet in a transmission buffer.