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一、问题的提出在地球表面发射一艘人造飞船,不计地球大气层对人造飞船的影响,使人造飞船相继脱离地球和太阳的引力束缚远离太阳系而去的最小发射速度。已知地球半径R=6.37×10~6m,地球表面重力加速度g=9.8m/s~2,地球绕太阳公转的速度v_E=29.8km/s,第二宇宙速度M_S表示太阳质量,M_E表示地球质量,m表示人造飞船质量,r表示地
First, the issue of the proposed launch of a man-made spacecraft on the surface of the Earth, regardless of the impact of the Earth’s atmosphere on the man-made spacecraft, man-made spacecraft and the Earth’s succession from the gravitational bond away from the solar system and the minimum launch speed. It is known that the Earth’s radius R = 6.37 × 10 ~ 6m, the earth’s surface gravity acceleration g = 9.8m / s ~ 2, the revolution speed of the earth around the sun v_E = 29.8km / s, the second cosmic velocity M_S indicates the sun’s mass, M_E means the earth Quality, m said man-made spacecraft quality, r said to