Validation of space net deployment modeling methods using parabolic flight experiment

摘要

A parabolic flight experiment has been performed which allowed to compare with the simulations by two models: the mass-spring model and the absolute nodal coordinate formulation (ANCF) model. From the analysis of the absolute residual and the average relative residual between the simulations and the parabolic flight experiment results, it is concluded that, under a net configuration as shown in Fig. 1, both models are able to describe the movement of the bullets and the net movement along the traveling direction with an average relative residual error up to 15%. Moreover, the mass-spring model is superior in reflecting the movements of bullets along the traveling direction in comparison to the ANCF model. On the contrary, the ANCF model is superior to the mass-spring model in describing the dynamics of the inner knots of the net. This Note focuses only on the net deployment phase, whereas the following capturing movement is not discussed. The contact dynamics implemented in the ANCF net model and the validation of the capturing dynamics are expected in the future.