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Interplanetary flight using solar sails
, Article RAST 2005 - 2nd International Conference on Recent Advances in Space Technologies, Istanbul, 9 June 2005 through 11 June 2005 ; Volume 2005 , 2005 , Pages 330-334 ; 0780389778 (ISBN); 9780780389779 (ISBN) ; Mehdizadeh, N. S ; Jalali, M. A ; Sharif University of Technology
2005
Abstract
This research is dedicated to show the possibility of using solar radiation pressure by solar sails for interplanetary flights. In this paper, in addition to the Introduction of solar sailing and physics of solar radiation pressure, the solar sail orbital dynamics for optimal trajectory of an ideal solar sail spacecraft has been studied. It considers the problem of optimal controlling the sail angle so as to execute a minimum-time coplanar orbit transfer from the circular initial orbit to the circular target orbit. The direct collocation optimal control technique is used to transform the state equations to a set of nonlinear algebraic constraint equations. The results of state and control...
Coupled Attitude-orbit Dynamics and Control of Solar Sail by Moving the Center of Mass
, M.Sc. Thesis Sharif University of Technology ; Asadian, Nima (Supervisor)
Abstract
In this thesis, firstly we have developed a coupled dynamic for the orbit and attitude of a solar sail. Secondly, we found an optimal trajectory from the Earth to Mars and tried to control the system on the optimal trajectory by a control mechanis which moves the center of mass of the sail. The solar sail is considered to be rigid and Ideally reflective which means the sail reflects the full extent of the photons it receives. Adjusting the center of mass of the sail is done by changing the position of two sliding masses rode on two rails perpendicular to each other. Moving the center of mass of the sail brings about a change in the attitude of the sail which then causes a deflection in the...