摘要：
A LM-3B carrier rocket lifted off from the Xichang Satellite Launch Center at 23:46BeijingtimeonFebruary4,successfully launching the communications technology experiment satellite 6 into its preset orbit.
摘要：
On 19 April 2021,its twin rotors stirring the wispy Martian atmosphere,Ingenuity,the National Aeronautics and Space Administration(NASA)miniature helicopter,lifted off the surface of the Red Planet[1].Built by NASA’s Jet Propulsion Laboratory in California,the 0.5 m tall craft did not perform any fancy aerobatics.It climbed to an altitude of 3 m,hovered,turned 96,and then landed.But the 39 s flight was remarkable because it was the first by an aircraft on a planet other than Earth[1].
摘要：
Dear editor,The flapping-wing aerial vehicle is a type of bionic robot imitating the flight of birds and insects that generates lift and thrust through the active movement of wings [1].Its bionic shape has unique advantages in reconnaissance missions [2].The areas that flapping-wing aerial vehicles need to navigate during their flights may be highly complex and uncertain.
摘要：
A LM-4 B carrier rocket lifted off from the Taiyuan Satellite Launch Center at 11:23 Beijing time on September 27, launching two environmental monitoring satellites(HJ-2 A and HJ-2 B) into their preset orbits. The HJ-2 A and HJ-2 B, two optical remote sensing satellites, will replace the previous operating satellites HJ-1 A and HJ-1 B, providing services in the areas of environmental protection, natural resources, water conservancy, agriculture and forestry.
摘要：
At 13:40 Beijing time on September 21, 2020, a LM-4 B launch vehicle lifted off from the Jiuquan Satellite Launch Center, successfully deploying the Haiyang 2 C(HY-2 C) satellite into orbit. This launch mission also implemented a verification test for controlling the impact zone of the first stage rocket debris by a flight based on the grid fins system. It was the second onboard flight verification test since the first successful flight test with the launch mission of LM-4 B deploying GF-7 on November, 2019.
摘要：
A LM-11 carrier rocket lifted off from the Xichang Satellite Launch Center at 4:14 Beijing time on December 10,launching the Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor(GECAM)satellites into orbit successfully.
摘要：
At 12:01 Beijing time on August 6, a LM-2 D carrier rocket lifted off from the Jiuquan Satellite Launch Center, launching the Gaofen 9-04 satellite and a Tsinghua science satellite into orbit with success.The Gaofen 9-04 satellite is an optical remote sensing satellite, which was developed by the DFH Satellite Co., Ltd. of CAST.
摘要：
Lift force of an asymmetric capacitor in arbitrary shape still cannot be precisely calculated. For an irregular surface of a general asymmetric capacitor of which electric charge is nonuniformly distributed, we dedicate effort to filling the gap of lift force calculation problem. Through theoretical derivation, a general formula result is achieved. By applying theoretical formula combining with experimental method based on similarity principle of dimensional analysis, we can almost figure out all types of lift force of asymmetric capacitor. It is really an exciting method which can universally solve the hard thrust force calculation problem completely.
AI期刊論文
查重降重
文獻(xiàn)查詢
文獻(xiàn)下載
文獻(xiàn)閱讀
文獻(xiàn)發(fā)表
