caa a22 4500 60624512X CHVBK 20210128101334.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s12567-015-0092-2 doi (NATIONALLICENCE)springer-10.1007/s12567-015-0092-2 An overview of the RFCS project V&V framework: optimization-based and linear tools for worst-case search [Elektronische Daten] [A. Marcos, P. Rosa, C. Roux, M. Bartolini, S. Bennani] This article presents the application of nonlinear (simulation-based) and linear (structured singular value) worst-case tools to the VEGA launcher Verification and Validation process, during atmospheric ascent. The simulation-based worst-case evaluation is performed by minimizing a set of cost functions that capture the launcher's performance objectives, using the Worst-Case Analysis Optimization Tool and a high-fidelity nonlinear simulator of VEGA. The linear worst-case search uses the structured singular value ( $$\mu $$ μ ) and a linear fractional transformation model representing the yaw rigid motion of the VEGA launcher but numerically evaluated using time simulation data from the VEGA simulator. To facilitate the analysis of the worst-case results as well as the comparison between the two analysis tools, a selection of the most critical uncertainties is performed using sensitivity analysis based on selected nonlinear simulator time responses. It is highlighted that the presented analysis tools are complementary to traditional Monte Carlo approaches in that they strive to identify worst-case uncertainty combinations as opposed to providing probabilistic guarantees on performance metric satisfaction. In addition, as it will be shown, these approaches require only a fraction of the time required to perform a Monte Carlo campaign. CEAS, 2015 Verification & Validation nationallicence Worst-case search nationallicence LFT model nationallicence μ -analysis nationallicence VEGA launcher nationallicence Marcos A. Deimos Space S.L.U., 28760, Madrid, Spain aut Rosa P. Deimos Engenharia, 1998-023, Lisbon, Portugal aut Roux C. ELV, 00034, Rome, Italy aut Bartolini M. ELV, 00034, Rome, Italy aut Bennani S. ESA_ESTEC, 2201AZ, Noordwijk, The Netherlands aut CEAS Space Journal Springer Vienna 7/2(2015-06-01), 303-318 1868-2502 7:2<303 2015 7 12567 https://doi.org/10.1007/s12567-015-0092-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s12567-015-0092-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marcos A. Deimos Space S.L.U., 28760, Madrid, Spain aut NATIONALLICENCE 700 1- Rosa P. Deimos Engenharia, 1998-023, Lisbon, Portugal aut NATIONALLICENCE 700 1- Roux C. ELV, 00034, Rome, Italy aut NATIONALLICENCE 700 1- Bartolini M. ELV, 00034, Rome, Italy aut NATIONALLICENCE 700 1- Bennani S. ESA_ESTEC, 2201AZ, Noordwijk, The Netherlands aut NATIONALLICENCE 773 0- CEAS Space Journal Springer Vienna 7/2(2015-06-01), 303-318 1868-2502 7:2<303 2015 7 12567