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A Methodology for Disturbance Characterisation of Families of Microvibration Sources

De Lellis, Salvatore, Stabile, Alessandro, Aglietti, Guglielmo and Richardson, Guy (2018) A Methodology for Disturbance Characterisation of Families of Microvibration Sources In: European Conference on Spacecraft Structures, Materials & Environmental Testing (ECSSMET 2018), 28 May - 1 June 2018, Noordwijk, The Netherlands.

De Lellis ECSSMET.pdf - Accepted version Manuscript

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Disturbances generated by reaction wheels on board the spacecraft are among the most substantial . Hence they play a crucial role when microvibration budget has to be assessed. This paper aims at characterising the effects of RW on the structure by focusing on the format of the disturbance input matrix of these components. In particular the case of single and multiple wheel accounted for. In the first one the responses are evaluated at some specific locations of the reaction wheel where their disturbance is amplified, i.e. harmonics. In the second case a more realistic scenario is considered with several wheels to be characterised and the effects of neglecting some terms of the disturbance input matrix are discussed. Finally a sensitivity analysis is carried out to quantify in which extent changes in the input matrix can alter the response. A preliminary methodology is then suggested to characterise a large num ber of wheels.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
De Lellis,
Richardson, Guy
Date : 1 June 2018
Copyright Disclaimer : Copyright 2018 ESA
Depositing User : Melanie Hughes
Date Deposited : 26 Jul 2018 08:49
Last Modified : 26 Jul 2018 08:49

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