Events Calendar

Aerospace and Mechanical Engineering Seminar Series

Speaker: John Junkins, Professor of Aerospace Engineering at Texas A&M University

Talk Title: Astrodynamics for Modern Space Operations: Recent Analytical, Computational and Experimental Research

Series: Aerospace and Mechanical Engineering Seminar Series

Abstract: We address recent advances in analytical, computational and experimental studies aimed at challenges posed by the growth of space debris in near earth orbit. Since two large satellite collisions in 2007 and 2009, space debris has emerged as a challenge to the future utilization of low earth orbit. The Kessler Syndrome describes the potentially unstable increase in the population of space debris due to the increase in future probability of collisions. The future collision probability is increased by the large debris population wake of each collision. Some studies indicate that removing largest space derelict objects such as spent boosters and dead satellites is the most effective means for arresting growth of space debris, along with end-of-life de-orbit plans for all future launches. While present day collision risks are tolerable for most purposes, one or two additional large object collisions could increase the probability of collision to a point that future utilization of some orbit regimes could be severely degraded. This paper overviews two sets of research relevant to these challenges: (1) Methods for de-orbiting large derelict objects not designed for rendezvous and docking, and (2) new methods in astrodynamics for rapid/precise orbit propagation and mission analysis relevant to the challenges posed by orbit debris.

For both sets of research, we overview key issues, basic developments, and current status of closure between theory, computation and experiments. We discuss critical obstacles for these developments to be realized as operational technology for debris mitigation missions. Finally, we observe related applications where the methodology presented is potentially transferrable.

Host: Prof. Firdaus Udwadia

Location: Seaver Science Library (SSL) - 150

Audiences: Everyone Is Invited

Contact: Valerie Childress