Rainbow Solar Drone "Flying in the Sky"
The wingspan is 45 meters, the surface is covered with solar panels, and the shape is peculiar; the next flight can be several months or even years, with the characteristics of "quasi-satellite"; it can be used as an air mobile WIFI base station, capable of real-time monitoring and positioning at high altitude, with broad application prospects... ... Not long ago, China's rainbow solar drone successfully completed the high-altitude flight test of more than 20,000 meters, making China the third country to master the solar space drone technology in the adjacent space after the United States and Britain.
Solar drones are called "atmospheric satellites". They not only have super-high-altitude flight capabilities, but also are of concern to countries around the world due to their long flight duration, wide range of reconnaissance and strong survivability. China Aerospace Aerodynamics Research Institute has been engaged in the research of aircraft aerodynamics technology. In the past few years, they have used their technological advantages to turn their attention to the field of drones. After launching the Rainbow series to inspect one drone, they once again released the first of our country. Space solar drone. The solar drone with complete independent intellectual property rights has become a new innovation in China's “intelligenceâ€.
From "under the cloud" to "on the cloud", "Rainbow" spans more than just height
When it comes to rainbow solar drones, let us first look at a set of data -
The world's largest passenger airliner Airbus A380 maximum cruising altitude: 13,000 meters;
The United States' most advanced five-generation aircraft F-22 maximum ceiling: 19,000 meters;
Rainbow solar drone flying height meters.
As can be seen from the data, the rainbow solar drone is obviously "higher one", from "under the cloud" to "on the cloud", flying to a new height.
The "climbing up" process of "Rainbow" is not easy. At the beginning of the launch of the Rainbow Solar Drone Project, the R&D team established two goals of super high altitude and long flight time, so that “Rainbow†can achieve or exceed the same type of UAV in foreign countries.
In the equipment showroom, the author saw the model of the rainbow solar drone. The rainbow solar drone in front of the shape is strange, the overall design is simple and smooth, and the wing is like a piece of paper with solar silicon plate. Shi Wen, chief engineer of Rainbow Solar UAV, said: "This design is to better improve the lift-to-resistance ratio of the drone and make the drone fly higher." Solar drones rely entirely on "absorbing" solar energy. Keep flying, if you don't eat enough during the day, you will be hungry at night, and "flying far" is a piece of paper. In a flight demonstration, the R&D personnel found that as the latitude, altitude and other conditions change, the efficiency of the panel to absorb and convert solar energy will change, directly affecting the flight safety of the drone.
“There is no gas station at 10,000 meters high altitude.†Shi Wen told the author that the energy issue is a “blocking tiger†that cannot be bypassed in the development of solar drones. R&D personnel have upgraded the control system many times, from minor improvements in shape to points. The system's step-by-step optimization, and finally the use of high-efficiency solar panels and lightweight and efficient transmission cable, continues the flight time of the rainbow drone.
The load capacity is higher than that of foreign similar drones, the key technologies are localized, and there are broad application prospects in the military and civilian fields... As the latest achievement of China’s “intelligenceâ€, the rainbow solar drones rely on two high-altitude and long-haul flights. "Falun", reaching the world's advanced level.
From conception to first flight, China’s “intelligence†has caught up with the cutting edge of technology.
As early as 1980, the United States listed the solar drone project in the national plan, and successively developed model drones such as "Pathfinder" and "Sun God". As the leading country in today's solar drone technology, the UK's "Breeze" drone, which was tested in 2007, has an air flight time of 54 hours and a flying height of over 15,000 meters.
There is a saying in the aviation field that the development of aviation technology is the most taboo.
That being said, when the solar drone project was launched 15 years ago, the R&D team had to face a gap in the technical level.
Foreign technology can't get it, can't learn it. How does "Rainbow" complete the catch-up and occupy a place in the field of solar drones?
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