Some features of vibrational perturbations onboard the Mir orbital station

A number of scientific and technical experiments were carried out and are s till being carried out onboard the Mil orbital station in various fields: p hysics of fluids, space materials study, astrophysics, biotechnology, and s o on. The duality and reliability of space experiments are essentially depe ndent on a knowledge of real microgravitational situation onboard a satelli te, which essentially depends on vibrational perturbations. A lot of vibrat ion processes studies have been done up to now on the Mir station in the fo llowing lines of research: control of dynamic and exploitation regimes when carrying out biotechnological and technological experiments; determination of the contribution of different onboard systems and mechanisms to the tot al vibration perturbations power; and investigation of distributions of mic roacceleratiou levels and dynamics of vibration processes in different modu les and segments of the orbital station. This paper presents the results of the analysis of vibration perturbations produced by some standard onboard Mir station systems in a configuration when the KVANT-2 and KRISTALL module s were arranged along the yaw axis of the mainframe. It is shown that due t o strong requirements for tolerable levels of the microaccelerations onboar d the International Space Station (ISS), the investigations of microgravita tional situation, as an integral part of the technological environment, now have a high priority.