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)
Sodium Fluoride Basic Information
Product Name: Sodium fluoride
Mol File: 7681-49-4.mol
Sodium Fluoride Chemical Properties
Melting point: 993 Â°C(lit.)
Boiling point: 1700 Â°C
Density: 1.02 g/mL at 20 Â°C
Vapor pressure: 1.4 mm Hg ( 0 Â°C)
Storage temp.: 2-8Â°C
Solubility H2O: 0.5 M at 20 Â°C, clear, colorless
Color: White to off-white
Specific Gravity: 2.558
PH: 7.0-10.0 (25â„ƒ, 0.5M in H2O)
Water Solubility: 4 g/100 mL (25 ÂºC)
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