Speaker: Dr Elisa Maria Alessi
Istituto di Fisica Applicata “Nello Carrara” (IFAC),
Consiglio Nazionale delle Ricerche (CNR), Italy
Title: Passive End-of-Life Solutions for Low Earth Orbits
Date and time: Monday 9 October 2017, 3:30–4:30pm – note unusual day and time
Location: Building 8 Level 9 Room 66 (AGR) RMIT City campus
Abstract: The growing awareness of the space debris problem has motivated the scientific community to look for effective and feasible active and passive end-of-life disposal solutions for spacecraft orbiting the Earth, in particular the Low Earth Orbit (LEO) region. It is now recognized the idea that the mission design must comprise end-of-life strategies to preserve the space environment and for the sustainability of the whole program. To this end and to make it affordable, it is mandatory to achieve a deep understanding of the dynamics pervading the circumterrestrial space. Starting from an explanatory introduction on the problem and on the worlwide effort, the talk will address the recent advancements obtained in the framework of the ReDSHIFT H2020 project concerning the dynamical mapping of the LEO region, by means of extensive numerical simulations and analytical studies of the resonances due to solar radiation pressure and third-body perturbations.
Bio: Elisa Maria Alessi works at IFAC-CNR (Italy) as a researcher since 2012. Her research concerns space debris dynamics and trajectory design, with a special focus on the design of end-of-life disposal trajectories based on perturbation modeling and numerical simulations, and the exploitation of Libration Point Orbits for both natural and artificial bodies. She graduated in Physics from the University of Padova and obtained the Ph.D. in Applied Mathematics from the University of Barcelona (Spain). Before joining IFAC, she worked at the Department of Mathematica of the University of Pisa on the orbit determination for the radioscience experiment of the BepiColombo mission.