Abstract
Some small scientific satellites can be regarded as free, multi-body, supercritical and statorless rotors. Classical rotordynamics does not cover the dynamic behaviour and the stability analysis of such rotating systems, being focused on fixed rotors. Attitude dynamics usually deals with single rigid spacecrafts, sometimes equipped with flexible appendices like solar arrays or antennas. The case of the Galileo Galilei Ground (GGG) test facility is herewith analyzed through a numerical and experimental investigation on the dynamic behaviour of a fixed multi-body fast-spinning rotor in order to validate the design approach proposed for Galileo Galilei (GG) spacecraft.
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References
Genta, G., Delprete, C. and Brusa. E., ‘Some considerations on the basic assumptions of the rotordynamics’, J Sound Vibrat. 227(3) (1999) 611–645.
Genta, G. and Brusa. E., ‘Active stabilization of fast-spinning multibody spacecraft’, in: Proc. of the 48th IAF-Int. Astronautical Congress, 1997.
Brusa. E., ‘Progettazione di Strutture Elettromeccaniche Integrate. Costruzione e Stabilizzazione Attiva di Rotori Privi di Statore’, PhD Thesis, Politecnico di Torino, 1997.
Genta, G. and Brusa, E., ‘On the role of non synchronous rotating damping in rotordynamics’, Int. J. Rotat.Mach. 6(6) (2000).
Crandall, S.H., Rotordynamics, CRC Press, Boca Raton, 1995, pp. 1–44.
Hughes, P.C., Spacecraft Attitude Dynamics, Wiley, 1986.
Fortescue, P.W. and Stark, J., Spacecraft Systems Engineering, Wiley, 1991.
Team G.G., ‘Galileo Galilei GG’ Phase A Report, 1998.
Nobili, A. (and alii),“GALILEO GALILEI’ (GG) proposed space experiment to test the equivalence principle and preliminary results from the prototype on the ground’, In: Proc. of NASA//JPL International Conference on Fundamentals in Physics in Space, 1999.
Nobili, A.M., Bramati, D., Genta, G. (and alii), ‘Galileo Galilei flight experiment on equivalence principle with field emission electric propulsion’, J. Astronaut. Sci. 43(3) (1995) 219–242.
Nobili, A.M., Bramati, D., Genta, G. (and alii), ‘Proposed noncryogenic, nondrag-free test of the equivalence principle in space’, New Astron. 3(3) (1998) 175–218.
Genta, G., Vibration of Structures and Machines, Springer Verlag, 1993.
Genta, G., Bassani, D. and Delprete, C., ‘Dynrot: A finite element code for rotordynamic analysis based on complex co-ordinates’, Engng Comput. 13(6) (1996) 86–91.
Timoshenko, S., Strength of Materials, Macmillan, London, 1930.
Timoshenko, S. and Goodier, J., Theory of Elasticity, McGraw-Hill, 1970.
Carlson, H., Spring Designer’s Handbook, M. Dekker, 1978.
Bongiovanni, G. and Roccati, G., Le Molle: Tipi e Criteri di Calcolo, Levrotto e Bella, 1994.
Nobili, A.M., Bramati, D. and Comandi, G., ‘Galileo Galilei ground experiments’, Private Communication, 2000.
Comincioli, V., Analisi Numerica: Metodi, Modelli, Applicazioni, McGraw-Hill, 1995.
Golub, G.H. and Van Loan, C.F., Matrix Computations, The John Hopkins Press, Baltimore, 1989.
CNES Mécanique Spatiale pour les Satellites Géostationnaires, CEPAD, 1986.
Belingardi, G., Il Metodo degli Elementi Finiti nella Progettazione Meccanica, Levrotto e Bella, 1995.
Petyt, M., Introduction to Finite Element Vibration Analysis, Cambridge University Press, Cambridge, 1990.
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Brusa, E., Zolfini, G. Dynamics of Multi-Body Rotors: Numerical and Experimental FEM Analysis of the Scientific Earth Experiment Galileo Galilei Ground. Meccanica 37, 239–254 (2002). https://doi.org/10.1023/A:1020147020815
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DOI: https://doi.org/10.1023/A:1020147020815