Abstract: The application relates to a target acquisition system (100) for an unmanned aircraft (106) according to an embodiment. The system comprises goggles (110) and the unmanned aircraft. The unmanned aircraft equipped with a camera (124) and a measuring unit (230) is configured to transmit location data (DS, KA, DE) related to a location (MS) of a target (102) to the goggles. The goggles are configured to form an augmented reality user interface (LK) by means of at least one goggle lens (212) for controlling the unmanned aircraft. The goggles equipped with an orientation detector (213) are configured to present to a wearer (108) of the goggles the location of the target as an augmented reality target object (MB) in the user interface based on the received target location data and an orientation (SA) of the goggles as detected by the orientation detector.

Abstract: The application relates to a target acquisition system according to one embodiment for an indirect-fire weapon. The system includes a terminal device, a sensor unit for the terminal device, an unmanned aircraft and a control device for the aircraft. The terminal device is adapted to receive, from the control device-controlled aircraft, location data (LD, PW, DT, LT) related to a target's location (LT). The sensor unit is adapted to monitor the weapon's position. The terminal device is adapted to present, with a user interface unit, the target's location on the basis of the received location data and a calculated hit point (LH) for the weapon's projectile on the basis of the weapon's position.

Abstract: The invention relates to an apparatus for constructing comprising at least feeding means for providing construction material in layers. The apparatus comprises at least first feeding means for hardening material, second feeding means for insulating material wherein said feeding means are configured to operate substantially concurrently so that a construction layer comprises materials from each feeding means. The apparatus may also provide reinforcement substantially concurrently with the other materials.