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According to the China National Defense Science and Technology Information Network, ARCA, a Romanian aircraft developer, announced that it is developing a high-performance electric propulsion drone system named Air Strato.
The Air Strato is a high-altitude electric propulsion drone system, and the first prototype is being tested. With a wingspan of 16 meters and a flight altitude of 18,000 meters, the UAV can carry 30 kilograms of payload, including aerial photography and monitoring equipment, scientific instruments and other mission loads.
The drone-equipped electric propulsion system can guarantee flight for 7 hours when using an on-board battery, and it can fly for 3 days when using a solar panel. The powerful power of the electric propulsion system ensures that the UAV can smoothly take off within 65 meters after accelerating to 50 meters/second on hard roads, grassy runways and muddy temporary runways.
If the trial is successful, ARCA plans to develop a civilian version of the Air Strato drone system and expand the drone family. (Yuan Cheng)
Sharp Blade, used to cut things like wallpaper, so it is called "wallpaper knife", also known as "art knife". Decoration, decoration, advertising plaque industry is often used.
The most important feature of wallpaper knife is to use the segmented blade which is easy to replace. When using, it can fold off the non sharp section. It can keep the sharpness all the time without sharpening the knife.
Art knife, also known as carving knife or wallpaper knife, is a kind of knife used for art and handicrafts. It is mainly used to cut soft things. It is mainly composed of plastic handle and blade. It is a pull-out structure. There are also a small number of metal tool handles. Most of the blades are inclined. They can be broken along the line of the blade body with blunt blade. New blade appears, which is convenient to use. There are various sizes of art knives.
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