Influence of Shape Change Caused by Warp of Thin-film Device on Solar Radiation Pressure Torque in Solar Sail

Author(s):  
Rikushi KATO ◽  
Masanori MATSUSHITA ◽  
Hideyuki TAKAHASHI ◽  
Osamu MORI ◽  
Nobukatsu OKUIZUMI ◽  
...  
2014 ◽  
Vol 51 (1) ◽  
pp. 381-384 ◽  
Author(s):  
Tomohiro Yamaguchi ◽  
Yuya Mimasu ◽  
Yuichi Tsuda ◽  
Makoto Yoshikawa

2011 ◽  
Vol 48 (11) ◽  
pp. 1740-1746 ◽  
Author(s):  
Ryu Funase ◽  
Yoji Shirasawa ◽  
Yuya Mimasu ◽  
Osamu Mori ◽  
Yuichi Tsuda ◽  
...  

Author(s):  
Luisa Boni ◽  
Giovanni Mengali ◽  
Alessandro A Quarta

A finite element approach is used to calculate the components of forces and moments acting on a square solar sail at a sun-sail distance equal to one astronomical unit. The model takes into account the deformation effect induced by the solar radiation pressure, where the incidence of the reflected photons changes as a function of the local orientation of the sail surface. Assuming a specular reflection model, the analysis shows that the maximum value of the transversal thrust component takes place when the solar zenith angle is about 36°, which is in accordance with the result available for a classical flat solar sail. Notably, the modulus of the moment due to the solar radiation pressure takes its maximum value approximately at the same (solar zenith) angle.


2014 ◽  
Vol 2014 ◽  
pp. 1-25 ◽  
Author(s):  
Jiafu Liu ◽  
Siyuan Rong ◽  
Fan Shen ◽  
Naigang Cui

Solar sail can merely make use of solar radiation pressure (SRP) force as the thrust for space missions. The attitude dynamics is obtained for the highly flexible solar sail with control vanes, sliding masses, and a gimbaled control boom. The vibration equations are derived considering the geometric nonlinearity of the sail structure subjected to the forces generated by the control vanes, solar radiation pressure (SRP), and sliding masses. Then the dynamic models for attitude/vibration controller design and dynamic simulation are obtained, respectively. The linear quadratic regulator (LQR) based and optimal proportional-integral (PI) based controllers are designed for the coupled attitude/vibration models with constant disturbance torques caused by the center-of-mass (cm)/center-of-pressure (cp) offset, respectively. It can be concluded from the theoretical analysis and simulation results that the optimal PI based controller performs better than the LQR based controller from the view of eliminating the steady-state errors. The responses with and without the geometrical nonlinearity are performed, and the differences are observed and analyzed. And some suggestions are also presented.


Aerospace ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 198
Author(s):  
Feng Zhang ◽  
Shengping Gong ◽  
Hexi Baoyin

Actively controlling the attitude of the solar sail is necessary to adjust the solar radiation pressure force for trajectory transfer and orbit control. The special configuration of the solar sail makes it very important to develop a unique attitude control strategy that differs from traditional methods. An attitude control method, based on shape variation of booms, is proposed in this manuscript. Firstly, we derive the equations to calculate the solar radiation pressure force and torque of the deformed solar sail. Then, the factors affecting forces and torques are analyzed. Finally, PD control law is applied to realize the three-axis attitude control for the solar sail.


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