Recovery of Microgravitational Conditions on Board of Freely Fly Space Vehicle Under Measurements of the Satellite Radionavigational Receiver and the Magnetometer

Paper number

IAC-07-B2.I.05

Author

Prof. Igor Belokonov, Samara State Aerospace University, Russia

Year

2007

Abstract

In connection with a significance of carrying out of scientific investigations in microgravitation conditions, directed on improvement space nanotechnologies the presence of a trustworthy information about microaccelerations onboard space vehicle is crucial important. In these purposes the satellite radionavigational receiver (SRNR) which now is part of onboard systems practically all space vehicles can be used. Now the SRNR is one of the most effective measuring tools, allowing to determine the manifold information on character of a space vehicle motion. However with its help except for motion parameters of a mass centre, the most significant perturbing accelerations, acting on space vehicle, can be estimated too. Opportunities of the navigational receiver (high accuracies of definition of radius - vector and velocity vector) allow to reveal variations of aerodynamic accelerations on rather small time frames. Besides it a lot of receiving channels of the SRNR, and also an opportunity to receive signals from satellites both GLONASS and GPS systems allow at arrangement of a receiving antenna on a long axis of space vehicle and at small design adaptations of a place of fastening of the antenna to estimate orientation and dynamics of space vehicle. It allows to determine the main part of short-period variations of microaccelerations, the caused by a no oriented motion of space vehicle.
In this report the algorithms of microaccelerations definition from braking action by an atmosphere on the measurements gained from the SRNS, and also algorithms of joint processing of measurements from a magnetometer and the navigational receiver, allowing to determine the microaccelerations, caused by dynamics of space vehicle are described.
For improvement of technology of post-flight recovering of microgravitational environment the measurements received from the SRNS and magnetometer in flight time of space vehicle "Foton-M2" in September, 2005 have been used. The results of recovering of microgravitational environment and designing of models of changing microacceleration for first five days of Foton-M2 flight are given.
On the basis of these results the small-sized auxiliary informational - measuring system intended for support of space research experiments and operative recovering of microgravitational environment in flight time of space vehicle designed.

Abstract document

IAC-07-B2.I.05.pdf

Manuscript document

IAC-07-B2.I.05.pdf (🔒 authorized access only).

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