Abstract: A movable air conditioner provides a structure in which a drain pan is disposed above an outdoor heat exchange part disposed in a lower accommodation space, an indoor heat exchange part is disposed in an upper accommodation space above the drain pan, and a control box is mounted on the drain pan. A portion of the heat sink of the control box is exposed to the upper accommodation space, and another portion of the heat sink is exposed to the lower accommodation space.

Abstract: A drop testing apparatus is provided. The drop testing apparatus includes a plate connected to an external crane, a magnet holder provided at one end of the plate and fixed to the plate by an electromagnetic force, a counterweight provided at another end of the plate and facing the magnet holder, a dummy structure connected to the magnet holder through a connecting member and having a test specimen installed at one side thereof, a load cell unit provided between the dummy structure and the test specimen to measure impulse of the test specimen, and a controller configured to control the electromagnetic force to be created in the magnet holder and to receive the impulse measured by the load cell unit. When the electromagnetic force is cancelled, the connecting member disengages from the magnet holder, and the dummy structure and the test specimen fall onto the ground.

Abstract: A communication system for an unmanned aerial vehicle according to one embodiment of the present invention comprises: an onboard communication apparatus, mounted on an unmanned aerial vehicle, for communicating by means of a previously configured frequency band; and a ground communication apparatus for communicating with the onboard communication apparatus by means of the previously configured frequency band.

Abstract: A communication system for an unmanned aerial vehicle according to one embodiment of the present invention comprises: an onboard communication apparatus mounted on an unmanned aerial vehicle, for communicating by means of a previously configured first band and a previously configured second frequency band; and a ground communication apparatus for communicating with the onboard communication apparatus by means of the previously configured first band and previously configured second frequency band.

Abstract: A movable air conditioner provides a structure in which a drain pan is disposed above an outdoor heat exchange part disposed in a lower accommodation space, an indoor heat exchange part is disposed in an upper accommodation space above the drain pan, and a control box is mounted on the drain pan. A portion of the heat sink of the control box is exposed to the upper accommodation space, and another portion of the heat sink is exposed to the lower accommodation space.

Abstract: A communication system for an unmanned aerial vehicle according to one embodiment of the present invention comprises: an onboard communication apparatus, mounted on an unmanned aerial vehicle, for communicating by means of a previously configured frequency band; and a ground communication apparatus for communicating with the onboard communication apparatus by means of the previously configured frequency band.

Abstract: A communication system for an unmanned aerial vehicle according to one embodiment of the present invention comprises: an onboard communication apparatus mounted on an unmanned aerial vehicle, for communicating by means of a previously configured first band and a previously configured second frequency band; and a ground communication apparatus for communicating with the onboard communication apparatus by means of the previously configured first band and previously configured second frequency band.

Abstract: A drop testing apparatus is provided. The drop testing apparatus includes a plate connected to an external crane, a magnet holder provided at one end of the plate and fixed to the plate by an electromagnetic force, a counterweight provided at another end of the plate and facing the magnet holder, a dummy structure connected to the magnet holder through a connecting member and having a test specimen installed at one side thereof, a load cell unit provided between the dummy structure and the test specimen to measure impulse of the test specimen, and a controller configured to control the electromagnetic force to be created in the magnet holder and to receive the impulse measured by the load cell unit. When the electromagnetic force is cancelled, the connecting member disengages from the magnet holder, and the dummy structure and the test specimen fall onto the ground.

Abstract: Provided are an apparatus and method for playing a video based on real-time data. The apparatus includes a ground control unit which receives flight data including position information, speed information, and attitude information of an aircraft from at least one aircraft and a video playing unit which receives the flight data from the ground control unit and displays the flight data on a map screen.

Abstract: Provided are an apparatus and method for playing a video based on real-time data. The apparatus includes a ground control unit which receives flight data including position information, speed information, and attitude information of an aircraft from at least one aircraft and a video playing unit which receives the flight data from the ground control unit and displays the flight data on a map screen.