Projects per year
The rotational state and structure of minor bodies undergo major disruptions during very close encounters with massive bodies. This paper proposes the use of tidal interaction during a swing-by to modify or manipulate the spin and possibly the structure of asteroids, primarily during capture. The possibility of de-spinning, spinning-up or controlled break-up of a captured asteroid is considered. Three simple planar models are used to study the orbit-attitude interactions: the coupled dynamics of an ideal mass-point dumbbell, a simplified decoupled rigid body rotation dynamics, and a circular orbit binary. The evolution of the rotational state and structure of the asteroids is studied for the hypothetical cases of a single lunar or Earth swing-by prior to capture. The final conditions are shown to be highly dependent on the initial rotational state, the distance to the swing-by body, and, most importantly, the relative attitude of the asteroid to the local vertical at pericentre.
|Number of pages||10|
|Publication status||Published - 29 Sep 2014|
|Event||65th International Astronautical Congress (IAC 2014) - Metro Toronto Convention Centre, Toronto, Canada|
Duration: 29 Sep 2014 → 3 Oct 2014
|Conference||65th International Astronautical Congress (IAC 2014)|
|Period||29/09/14 → 3/10/14|
- orbit determination
- asteroid capture
- coupled dynamics
VISIONSPACE - VISIONARY SPACE SYSTEMS: ORBITAL DYNAMICS AT EXTREMES OF SPACECRAFT LENGTH SCALE (ERC ADVANCED GRANT)
1/02/09 → 30/09/14
Garcia Yarnoz, D., & McInnes, C. (2014). Coupled orbit-attitude dynamics of a captured asteroid during swing-bys. IAC-14-C1.2.13. Paper presented at 65th International Astronautical Congress (IAC 2014), Toronto, Canada.