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Abstract
Solar sailing has been proposed for a range of novel space applications, including hovering above the ecliptic for highlatitude observations of the Earth and monitoring the Sun from a subL1 position for space weather forecasting. These applications, and many others, are all defined in the SunEarth threebody problem, while little research has been conducted to investigate the potential of solar sailing in the EarthMoon threebody problem. This paper therefore aims to find solar sail periodic orbits in the EarthMoon threebody problem, in particular Lagrangepoint orbits. By introducing a solar sail acceleration to the EarthMoon threebody problem, the system becomes nonautonomous and constraints on the orbital period need to be imposed. In this paper, the problem is solved as a twopoint boundary value problem together with a continuation approach: starting from a natural Lagrangepoint orbit, the solar sail acceleration is gradually increased and the result for the previous sail performance is used as an initial guess for a slightly better sail performance. Three inplane steering laws are considered for the sail, two where the attitude of the sail is fixed in the synodic reference frame (perpendicular to the EarthMoon line) and one where the sail always faces the Sun. The results of the paper include novel families of solar sail Lyapunov and Halo orbits around the EarthMoon L1 and L2 Lagrange points, respectively. These orbits are doublerevolution orbits that wind around or are offset with respect to the natural Lagrangepoint orbit. Finally, the effect of an outofplane solar sail acceleration component and that of the Sunsail configuration is investigated, giving rise to additional families of solar sail periodic orbits in the EarthMoon threebody problem.
Original language  English 

Pages  IAC14C.1.7 
Number of pages  11 
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
Conference  65th International Astronautical Congress (IAC 2014) 

Country/Territory  Canada 
City  Toronto 
Period  29/09/14 → 3/10/14 
Keywords
 solar sailing
 periodic orbits
 threebody problem
 EarthMoon trajectories
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Dive into the research topics of 'Solar sail periodic orbits in the EarthMoon threebody problem'. Together they form a unique fingerprint.Projects
 1 Finished

VISIONSPACE  VISIONARY SPACE SYSTEMS: ORBITAL DYNAMICS AT EXTREMES OF SPACECRAFT LENGTH SCALE (ERC ADVANCED GRANT)
McInnes, C.
European Commission  FP7  European Research Council
1/02/09 → 30/09/14
Project: Research