李林森 (Li Lin -sen).在不均匀旋转大气中瞬时圆形轨道的人造卫星的寿 命 (The lifetime of an artificial satellite moving in nonuniform rotating atmosphere and instaneous circle orbit)[ J] .应用数学和力学 (Applied Mathematics and Mechan- ics), 1991 , 12 (5):473 .Li, L.-S.: The lifetime...
26. An artificial satellite is said to ___ into space the other day. A. have launched B. have been launched C. be launched D. launch 试题详情 25. I'm sure the beauty of ___ outer space there will make ___excellent impression upon you. A. the; an B. /; the C. the; / ...
IN view of the recent widespread interest in the life-time of an artificial Earth satellite, a simple expression is derived here which predicts the approximate life-time from initially measured values of the rate of change of height at apogee and the difference between the heights at apogee and...
not only through work, can also benefit retirees' physical health, Wang noted. He added, however, that any mental health benefits are likely to depend on the type of activity -- whether it is something that the person truly enjoys, and that helps ease any stress of moving into retirement....
A satellite is an object in space that orbits around another. It has two kinds — natural satellites and artificial satellites. The moon is a natural satellite that moves around the earth while artificial satellites are those ...
Instead, the pair will end up in an oval-shaped orbit, moving from just 370 miles altitude at its nearest to 37,000 miles at its furthest over each orbit of 19 hours and 36 minutes. The spacecraft will line themselves up autonomously when they are in a good position to observe the sun...
Asian Infrastructure Investment Bank President Jin Liqun said on Wednesday that Cambodia is moving on the right track of economic development and the bank is ready to assist the country in its socio-economic development, a senior Cambodian official said. Forest fire extinguished in Inner Mongolia Aut...
Artificial Intelligence for Trusted Autonomous Satellite Operations Kathiravan Thangavel, ... Dario Spiller, in Progress in Aerospace Sciences, 2024 2.3.6 Formation The coordinated motion of multiple satellites is known as satellite formation flying. In an effort to match the user's requirements, differ...
orbit.That is an orbit which turns at the same speed as the turning round of the Earth.Satellites used for weather forecasting pass over the two poles of the Earth.By doing so, a different part of the Earth’s surface is viewed on each successive orbit.All artificial satellites get the ...
artificial satellitesosculating elementsaxi-symmetric gravitational fieldfirst-order perturbationsorbitspherical harmonicsHansen coefficientsindex of summationThe equations for the variation of the osculating elements of a satellite moving in an axi-symmetric gravitational field are integrated to yield the complete...