According to the analysis on calculation,the following can be worked out,such as the choice of wheelbase,the determination of wheel tread,the setup of power assembly and other major assemblies,the decision of crosswise stabilizing bar,the control of shimmy and so on,which must be taken into consideration to rationa.

It also provides the functions of measuring car-speed and wheelbase, and classifying the automobile automatically.

Quantitative wheel base adjustment mechanism can achieve test bench wheel base adjustment arrival location one time.

The author of this paper presents a group of formulas for designing optimally the wheel base of a hauling automobile and the span length of a trailer, on basis of analyzing and studying systematically wheel bases of hauling automobiles at home and abroad and span lengths of trailers at home and abroad by means of Structural Mechanics, Automobile Structur Caurse and Automobile Theory Course.

Research on reasonable bearing span of ship shaft;

Analysis of the effect of axial spacing of two successive blade rows on the measured mean flow coefficient at stall inception and on the flow range of compressor under multi-cell rotating stall operating conditions proves that the stator can suppress the flow disturbance in the compressor and strengthen the stability of the compressor.

In order to investigate the impact of the rotor-to-stator axial spacing on the compressor stalling characteristics, experimental studies for characteristics of the low speed research compressor with different rotor/stator gaps had been carried out.

The experimental results of a low speed single stage compressor show that stall flow coefficient decreases with the decrease of the axial spacing between rotor and stator because of the increas.