Dynamic Verification of Satellite Systems using Ilities

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Brown, Mason
Dey, Sharmistha
Tuxworth, Gervase
Bernus, Peter
De Souza, Paulo
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2021
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Rotterdam, Netherlands

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Abstract

The research outlines the design for an ‘ilities tool’ to assist small satellite verification. Prior literature commonly requests for ilities to be built-in to small satellite systems to prevent failure. Test standards are reviewed to define critical ilities. Definitions are then used to develop calculations that system designers can automate with a software tool. Previous failure data are used to predict the reliability of a future small satellite system. Bayesian estimation is applied to a qualitative NASA database of 219 small satellite (0.001-180 kg) failures from 2000–2016 to generate eight failure categories. A communication system (47%) or the attitude control (16%) failure are most likely to occur. A failure in the communication system has a low chance of survivability (16%). A failure within the attitude control system is likely to end with partial mission success (54%). The research suggests that an ilities tool can contribute to dynamically aiding verification. Such a tool will complement small satellite verification methods currently described by testing standards.

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International Association for the Advancement of Space Safety (IAASS) Conference

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Information systems

Satellite, space vehicle and missile design and testing

Systems engineering

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Brown, M; Dey, S; Tuxworth, G; Bernus, P; De Souza, P, Dynamic Verification of Satellite Systems using Ilities, International Association for the Advancement of Space Safety (IAASS) Conference, 2021