third cosmic velocity

The problems on calculating of the second and the third cosmic velocity are analyzed. The third cosmic velocity of 13.6 km · s-1 is obtained in the adiabatic approximation.

本文分析了第二、第三宇宙速度计算中存在的问题，导出绝热近似下第三宇宙速度的数值为13.6km/s。

The egg shape surface of third cosmic velocity in all directions

全方位逃逸的第三宇宙速度蛋形曲面

The radius vectors of third cosmic velocity in every directions form a curved surface as egg. Itis based on a ball surface which radius is 43.5Km/s.

全方位第三宇宙速度矢径，构成一个半径为43.5km/s的球面为基础的蛋形曲面。

Conducting a new numerical value of third cosmic velocity

第三宇宙速度新数值导出

Analysis and calculation of the second and the third cosmic velocity

第二和第三宇宙速度的分析与计算

In this paper, the third cosmic velocity i.e., the smallest velocity needed for launching an object from the earth into the space out of the solar system, is found to be 13.8km/ s, quite different from 16.7km/s given in some traditional text books.

本文计算出从地球上发射物体使其能飞出太阳系所需的最小速度，即第三宇宙速度，为13.8km/s，与一些传统教科书中给出的16.7km/s有较大的差异。

On the Calculation of the Third Cosmic Velocity

关于第三宇宙速度的计算