Next week: Yohannes Ketema, 14-Mar-23, 12:20pm Central
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Ellad Tadmor
Mar 7, 2023, 10:52:23 AM3/7/23
to aem-solid...@umn.edu
AEM Mechanics Research Seminar
Tuesday 14-Mar-2023, 12:20pm Central
Prof. Yohannes Ketema
Department of Aerospace Engineering and Mechanics, University of Minnesota
Title: Asteroid Deflection Using a Spacecraft in Restricted Keplerian Motion
Abstract: An asteroid collision with Earth, though unlikely, is a possibility that may have serious consequences for life on the planet. This motivates the study of methods by which a projected asteroid collision may be averted. In this talk, an overview of proposed methods of asteroid deflection, including gravity tractors, is given. A new type of gravity tractor consisting of a spacecraft in Keplerian motion about the asteroid is described and its characteristics are compared to existing methods. It is shown that this gravity tractor is generally more efficient in imparting the required change of momentum to the asteroid than, for example, a gravity tractor that is stationary with respect to the asteroid. The increased efficiency translates into an overall smaller launch mass for the spacecraft making such a mission more plausible.
For more information, visit the AEM Mechanics Research Seminar website:
Tuesday 14-Mar-2023, 12:20pm Central
In-person: Room 25, Mechanical Engineering Building, University of Minnesota
Online: Webinar registration link
Department of Aerospace Engineering and Mechanics, University of Minnesota
Title: Asteroid Deflection Using a Spacecraft in Restricted Keplerian Motion
Abstract: An asteroid collision with Earth, though unlikely, is a possibility that may have serious consequences for life on the planet. This motivates the study of methods by which a projected asteroid collision may be averted. In this talk, an overview of proposed methods of asteroid deflection, including gravity tractors, is given. A new type of gravity tractor consisting of a spacecraft in Keplerian motion about the asteroid is described and its characteristics are compared to existing methods. It is shown that this gravity tractor is generally more efficient in imparting the required change of momentum to the asteroid than, for example, a gravity tractor that is stationary with respect to the asteroid. The increased efficiency translates into an overall smaller launch mass for the spacecraft making such a mission more plausible.
For more information, visit the AEM Mechanics Research Seminar website:
_________________________________________________________________
Ellad B. Tadmor, Professor
Department of Aerospace Engineering and Mechanics
University of Minnesota
107 Akerman Hall, 110 Union St SE
Minneapolis, MN 55455, USA
tel: 612-625-6642
fax: 612-626-1558
web: Tadmor Website | Modeling Materials Book Website
_________________________________________________________________
Ellad B. Tadmor, Professor
Department of Aerospace Engineering and Mechanics
University of Minnesota
107 Akerman Hall, 110 Union St SE
Minneapolis, MN 55455, USA
tel: 612-625-6642
fax: 612-626-1558
web: Tadmor Website | Modeling Materials Book Website
_________________________________________________________________
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