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Numerical Verification of Thermal Stability Requirements for LISA Inertial Sensor in the Frequency Domain
Technical Paper
2003-01-2661
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes the thermal modeling and analyses performed on the LISA Technology Package (LTP), with special attention to the frequency domain requirements on the sensitive instrumentation. The new approach is presented, and the modeling and analysis phases are described in detail.
Results about LTP thermal stability in the frequency domain are shown, and obtained though two alternate approaches. The first one consists in the study of the transient response of the system to a periodic input with a frequency equal to the minimum frequency of interest, using the well known low-pass filtering properties of the thermal systems. The second is based on the generation of a time dependent input, starting from its Power Spectral Density definition: this input is used to run a transient thermal analysis and finally transform its results into the frequency domain.
Thermal stability assessment studies have been performed also at spacecraft level and are well described in [ref. 3].
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Authors
- Marco Molina - Mechanical and Thermal Engineering Department - Carlo Gavazzi Space
- Christian Vettore - Mechanical and Thermal Engineering Department - Carlo Gavazzi Space
- Laura Beretta - Mechanical and Thermal Engineering Department - Carlo Gavazzi Space
- Fabio Nappo - Mechanical and Thermal Engineering Department - Carlo Gavazzi Space
- Federico Pamio - Mechanical and Thermal Engineering Department - Carlo Gavazzi Space
- Massimiliano Pastena
- Alberto Franzoso
Citation
Molina, M., Vettore, C., Beretta, L., Nappo, F. et al., "Numerical Verification of Thermal Stability Requirements for LISA Inertial Sensor in the Frequency Domain," SAE Technical Paper 2003-01-2661, 2003, https://doi.org/10.4271/2003-01-2661.Also In
References
- Barbagallo G. Stramaccioni D. Use of Spectral Analysis in Thermal Stability Verification, ICES 2002 2002-01-2373
- Heys S. LISA Payload Thermal Analysis Thermal and ECLS Software ESTEC 2000
- Shaughnessy B. Analysis of Spacecraft Thermal Stability Thermal and ECLS Software ESTEC 2001