Multiple-spacecraft transfers to Sun-Earth distant retrograde orbits for asteroid detection missions
Colombo, Camilla and Mingotti, Giorgio and Bernelli-Zazzara, Franco and McInnes, Colin (2014) Multiple-spacecraft transfers to Sun-Earth distant retrograde orbits for asteroid detection missions. In: 65th International Astronautical Congress (IAC 2014), 2014-09-29 - 2014-10-03, Metro Toronto Convention Centre.
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Abstract
As demonstrated by the meteorite fall in Chelyabinsk, Russia, in February 2013, also asteroids with a diameter smaller than 40 m can enter the Earth’s atmosphere and cause a local damage on ground. For such small Potentially Hazardous Asteroids (PHAs) a short warning would be sufficient to have a protection plan in place on ground. However, small asteroids are difficult to be detected from ground, especially if they approach the Earth from the Sun direction, such as the Chelyabinsk object. For this reason, a multi-spacecraft mission was proposed to monitor PHAs from a telescope base orbiting on Distant Retrograde Orbits of the Sun – Earth system. This space-based system would allow increasing the warning time of asteroids incoming from the Sun direction. In this article a trade-off analysis is performed on the DRO and constellation size based on some measures of the detection capabilities. Moreover, the transfer to selected DROs from a Low Earth Orbit is designed to minimise the total Δv and time to build the constellation.
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Item type: Conference or Workshop Item(Paper) ID code: 50047 Dates: DateEvent29 September 2014Published4 September 2014AcceptedSubjects: Technology > Mechanical engineering and machinery
Technology > Motor vehicles. Aeronautics. AstronauticsDepartment: Faculty of Engineering > Mechanical and Aerospace Engineering Depositing user: Pure Administrator Date deposited: 27 Oct 2014 14:22 Last modified: 27 Nov 2024 01:38 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/50047