Memorias de investigación
Research Publications in journals:
The ion beam shepherd: A new concept for asteroid deflection
Year:2013

Research Areas
  • Aeronautical engineering

Information
Abstract
A novel slow push asteroid deflection strategy has been recently proposed in which an Earth threatening asteroid can be deflected by exploiting the momentum transmitted by a collimated beam of quasi-neutral plasma impinging against the asteroid surface. The beam can be generated with state-of-the art ion engines from a hovering spacecraft with no need for physical attachment or gravitational interaction with the celestial body. The spacecraft, placed at a distance of a few asteroid diameters, would need an ion thruster pointed at the asteroid surface as well as a second propulsion system to compensate for the ion engine reaction and keep the distance between the asteroid and the shepherd satellite constant throughout the deflection phase. A comparison in terms of required spacecraft mass per total imparted deflection impulse shows that the method outperforms the gravity tractor concept by more than one order of magnitude for asteroids up to about 200 m diameter. The two methods would yield comparable performance for asteroids larger than about 2 km
International
Si
JCR
Si
Title
ACTA ASTRONAUTICA
ISBN
0094-5765
Impact factor JCR
0,614
Impact info
Volume
90
10.1016/j.actaastro.2012.10.019
Journal number
1
From page
98
To page
102
Month
SIN MES
Ranking
0
Participants

Research Group, Departaments and Institutes related
  • Creador: Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
  • Departamento: Física Aplicada a la Ingeniería Aeronáutica