Abstract:
A de-icing/anti-icing system including at least two conductive structures embedded in an article that includes an outer surface designed as an aerodynamic surface. At least one of the conductive structures is arranged adjacent the outer surface. A control unit adapted to control the energy supply to the conductive structures for generating heat to the outer surface. A first of the conductive structures includes a first conductive nano structure and a second of the conductive structures includes a second conductive nano structure. A conductive property of the first of the conductive structures differs from a conductive property of the second of the conductive structures. The first conductive nano structure serves as a heating conductor and the second conductive nano structure serves as a heating element. The first and second conductive nano structures are embedded in a common plane of a resin layer forming the outer surface.
Abstract:
A structural composite part made of pre-impregnated fiber plies. The edges of two adjacent fiber plies are connected via a longitudinal composite joint made structural by a nanostructure arranged within the composite joint. A method of producing a structural composite part made of pre-impregnated fiber plies. The edges of two adjacent fiber plies are connected via a longitudinal composite joint made structural by a nanostructure and an aircraft structure comprising such structural composite parts.
Abstract:
An evaluation system for shooting training. The evaluation system is arranged to determine from which shooter fired ammunition detected by a target system originates. The evaluation system includes a receiver unit arranged to receive shooter messages from a plurality of weapon systems and to receive a target message from the target system. Each shooter message includes time marked firing information and first pairing information related to a weapon of the weapon system. Each target message includes time marked hit/miss information and second pairing information related to a target of the target system. The evaluation system further includes a processing unit arranged to pair the target with one associated weapon based on the target message and each respective shooter message. Also, a method for determining from where ammunition detected at a target was fired.
Abstract:
A method for producing an object of composite material comprising the steps of: placing one or several prepregs on a plane surface, forming a fiber stack; lifting over the fiber stack to a molding tool; downforming the fiber stack; curing the downformed fiber stack; where the method also comprises the step of: orienting the fiber directions so that all fibers, when the fiber stack is lifted over to the molding tool, will cross an edge of the molding tool only once.
Abstract:
A method for calculating a Time To Go value between a vehicle and an intruding object. First and second images of the object are retrieved at first and second points of time. A scaling factor is selected and the second image scaled with the scale factor. The scaled image is resampled to a set position. Correlation values are calculated between the first image and the resampled scaled image for different horizontal displacements and/or different vertical displacements for the resampled scaled image. A maximum correlation value is found based on the correlation values. Selecting the scaling factor, resampling, calculating the correlation values, and finding the maximum correlation values are repeated a second predetermined number of times. A largest maximum correlation value is found among the maximum correlation values and the scale factor associated with the largest maximum correlation value. The Time To Go is calculated based on the associated scale factor.
Abstract translation:一种用于计算车辆和入侵物体之间的“到达时间”值的方法。 在第一和第二时间点检索对象的第一和第二图像。 选择缩放因子,第二个图像用比例因子缩放。 缩放图像被重新采样到设置位置。 对于不同的水平位移和/或重采样的缩放图像的不同垂直位移,在第一图像和重采样的缩放图像之间计算相关值。 基于相关值找到最大相关值。 选择缩放因子,重采样,计算相关值和找到最大相关值重复第二预定次数。 在最大相关值和与最大最大相关值相关联的比例因子之间找到最大最大相关值。 Time to Go是根据相关的比例因子计算的。
Abstract:
The present invention relates to a method for steering a UAV, Unmanned Aerial Vehicle, to enable a high level command of the UAV. The method comprising the steps of: determining (500) a reference position (200, 300, 400) related to a position (210, 310, 410) for a moving object (220, 320, 420) which the UAV should follow; calculating (515) a smoothed position (230, 330, 430) based on the reference position (200, 300, 400), wherein the smoothed position (230, 330, 430) is calculated so that the smoothed position (230, 330, 430) moves more smoothly than the reference position (200, 300, 400); and steering (525) the UAV so that UAV follows the smoothed position (230, 330, 430).
Abstract:
A termination system that transmits on a cyclic basis, from a control station to an unmanned vehicle, pairs of mutually dependent code and counter values whose dependency is determined by a termination algorithm. The vehicle has knowledge of the algorithm and can hence validate a received code/counter pair using the same algorithm. If the received code/counter pair is invalid, the vehicle can decide to self-terminate. The control station includes a termination actuator that allows the vehicle to be remotely terminated by invalidating, when actuated by an operator, the code/counter pairs that are transmitted to the vehicle.
Abstract:
An antenna structure including at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and the second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of the group includes a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements. A corresponding method and a radar system including the antenna structure.
Abstract:
A device at an airborne vehicle including a flight control system configured to control the behavior of the airborne vehicle based on acceleration commands, a first control unit configured to provide the acceleration commands to the flight control system, and a collision avoidance unit. The collision avoidance unit includes a detection unit arranged to detect whether the airborne vehicle is on a collision course and a second control unit arranged to feed forced acceleration commands to the flight control system upon detection that the airborne vehicle is on a collision course. A method for collision avoidance in an airborne vehicle.