Vladimir S. Syromiatnikov Spacecraft Docing Devices deom SSI

recovery coefficient and the minimal attainable value; it is small even if the real ratio of is rather large (see Figure 5.13). This change in the correlations of rigidity, which leads to an increase in for small is a substantial drawback of shock absorption system without a lateral shock absorber. It is possible to partially compensate for this drawback by introducing a brake for which the attenuation coefficient differs on the forward and reverse courses. A decrease in damping on the forward course is attained by a correlation of parameters which is close to optimal, that is for small increasing damping on the reverse course decreases the “recoil” of the shock absorber (Figure 5.14). These same equations describe the impact of mass cos p through a spring with applied rigidit and a shock absorber with parameters c and k. The initial conditions are The parameters of the shock absorber, and do not depend here on and the applied rigidity of the rod for strives toward and rises rapidly for large here the change in is not as sharp as in the previous case (see Figure 5.11). Overall, the combination of longitudinal and lateral shock absorbers with the same parameters makes it possible to obtain the required values of s at lower deformation rates than when there are only lateral shock absorbers. Let us turn to the general case described by (5.34). When the parameters of the longitudinal and lateral shock absorbers are not the same, the characteristics of the process lie between the examined extreme cases. For example, an increase in the values of and in the longitudinal shock absorber lead to “more work” for the lateral shock absorber. Consequently, one can obtain more “longitudinal” or

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