A tethered upper stage for small launchers − preliminary analysis, design, and testA. Hyslop, E. J. van der Heide, M. Kruijff, C. Bonnal, C. Talbot and A. EspinosaEUCASS Proceedings Series – Advances in AeroSpace Sciences, 1 (2009) 495-514DOI: https://doi.org/10.1051/eucass/200901495