Astrophysics and Space Science

, Volume 282, Issue 4, pp 765–772 | Cite as

Astronomical Engineering Revisited: Planetary Orbit Modification Using Solar Radiation Pressure

  • Colin R. McInnes


As the Sun evolves along the main sequence its luminosity will grow, leading to a steadily increasing solar flux at the Earth with corresponding catastrophic consequences for the biosphere. A novel means of avoiding this terminal route to human evolution has recently been proposed by Korycansky et al. which utilises a series of grazing fly-pasts of the Earth with a small solar system body to increase the orbit radius of the Earth over a timescale of order 109 years. This short paper will propose an alternative strategy which utilises a large reflective sail to generate a propulsive thrust due to solar radiation pressure. It will be shown that if the sail is configured to be in static equilibrium relative to the Earth, the centre-of-mass of the Earth-sail system slowly accelerates. This scheme offers some advantages in that the mass of the sail is four orders of magnitude less than the mass to be processed in the scheme of Korycanskyet al. for trajectory correction manoeuvres alone. In addition, the severe hazard posed by multiple grazing fly-pasts of the Earth by a small solar system body is avoided. Although offering significant advantages, any thoughts of engineering on an astronomical scale clearly requires a leap of the imagination and a ready use of liberal assumptions.


Solar Radiation Pressure Solar Sail Orbit Radius Main Belt Solar Luminosity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Early, J.T.: 1989, Journal of the British Interplanetary Society 42, 567.ADSGoogle Scholar
  2. Gehrels, T. (ed.): 1979, Asteroids, University of Arizona Press, Tucson.Google Scholar
  3. Korycansky, D.G., Laughlin, G. and Adams, F.C.: 2001, Astrophys. Space Sci. 275, 349.zbMATHCrossRefADSGoogle Scholar
  4. McInnes, C.R., McDonald, A.J.C., Simmons, J.F.L. and MacDonald, E.W.: 1994, Journal of Guidance, Dynamics and Control 17, 339.Google Scholar
  5. McInnes, C.R.: 1999, Journal of Guidance, Control and Dynamics 22, 185.CrossRefGoogle Scholar
  6. McInnes, C.R.: 1999, Solar Sailing: Technology, Dynamics and Mission Applications, Springer-Verlag Series in Space Science and Technology, London.Google Scholar
  7. Shkadov. L.M.: 1987, Paper 1AA-87–613, 38th Congress of IAF, October 10–17, 1987, Brighton, U.K.Google Scholar

Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Colin R. McInnes
    • 1
  1. 1.Department of Aerospace EngineeringUniversity of GlasgowGlasgowScotland, U.K.

Personalised recommendations