Dynamic Test of Contact Tooth Pair Numbers of the N Type Involute Planetary Transmission with Minor Tooth Difference;

Correlation between spin angular momentums and background angular momentums of planets;

Proving Keippler s 3 Laws of Planetary Motion;

By means of the Runge -Lenz s vector the problems of the planets motion around the sun are solved in classical and relativistic cases.

The whole field of planetary gear transmission is dealt -with.

The efficiency of planetary gear trains is discussed.

Comparing many types of transmission,this paper chooses the multiple-level planetary gear transmission to meet the transmission ratio conditions.

The relation between the radial deformation of the central internal gear in planetary gear transmission and the number of planet gears is derived in this paper.

In this paper, the main constraints for the designing of NN type of involute planetary gear transmission are discussed, a concise and practical method for determining the addendum modification coefficients is proposed and some appropriate parameters are provided.

The frameworking planetary carrier in the planet-gear retarder has been considered as a whole with the glue command of the finite-element analysis software-ANSYS,and though the structure static analysing,the distribution of the deformation and stress of planetary carrier has been obtained.

for thin coal bed with iron ore and analyze the planetary carrier with this method.

Secondary flow of power-law fluid flow in annulus with inner cylinder executing a planetary motion;

Normal stress distribution on the inner cylinder forced by power law fluid flowing in annulus with inner cylinder executing a planetary motion;

The secondary flow in Newtonian fluid flow in annulus with the inner cylinder executing a planetary motion;