Characteristics of coupled orbital-attitude dynamics of flexible electric solar wind sail

Li, Gangqiang; Zhu, Zheng H.; Du, Chonggang; Meguid, S. A.

doi:10.1016/j.actaastro.2019.02.009

Cited by 29 publications

(23 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consider a spinning E-sail as shown in Fig. 2a, where the main and auxiliary tethers are divided into multiple two-node straight finite elements and modeled by the nodal position finite element method (NPFEM) [22,34,35]. Each tether element is assumed as a tensile member only with zero compressive stiffness due to the incompressibility of E-sail tethers [13].…”

Section: A High-fidelity Model Of the E-sailmentioning

confidence: 99%

“…Assuming the tether of E-sail is divided into n tensile elements, and the equation of motion of one element can be derived by the principle of virtual work [22,35]. Taking the k-th element as an example, , ,…”

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

“…ek [36], and the coefficients 7 relate to this model will be given in the simulation section. Note that the term , F kk is resulting from the stiffness matrix of the traditional finite element method when transforming the state variables from nodal displacement to nodal position [22,34,37]. Thus, the stiffness matrix  is the voltage of p-th main tether that is calculated as Eq.…”

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

“…Once the equation of motion of the k-th element is obtained, the equations of motion for the n elements (whole E-sail) can be obtained by assembling Eq. (1) with the standard assembly procedure in the conventional finite element method [22,34,36], such as,…”

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

“…As pointed out in Refs. [2,3,22], the Coulomb force exerting on the main tethers depends on temperature and density of electron, solar wind speed, and biased voltage of main tethers. Among them, the temperature and density of electron and solar wind speed are the environmental parameters and are not controllable.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Flight Dynamics and Control Strategy of Electric Solar Wind Sails

Zhu

2020

Journal of Guidance, Control, and Dynamics

Self Cite

View full text Add to dashboard Cite

This paper studies the flight dynamics and control strategy for electric solar wind sails based on the nodal position finite element method, where the coupling effects between tether dynamics and electrical field are considered. A modified throttling control strategy is proposed to control the attitude of electric sails by modulating individual tether voltage synchronously with the spinning motion of the sails. The effects of four critical physical parameters: tether numbers, tether length, sail spin rate, and mass of remote units are investigated. The results show that the effect of the relative velocity of the solar wind has a significant effect on the spin rate of the sail in attitude maneuvering, which in turn affects the attitude dynamics and orbit motion of the sail. Numerical results show that the proposed control strategy work successfully stabilizes the spin rate of sail when the TI type sail is adopted. Nomenclature cd, cmin, cmax = Desired, lower bound and upper bound relative ratio of spin rate.

show abstract

Section: A High-fidelity Model Of the E-sailmentioning

confidence: 99%

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

Section: Fig 1 Schematics Of Solar Photon Sail and E-sailmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Flight Dynamics and Control Strategy of Electric Solar Wind Sails

Zhu

2020

Journal of Guidance, Control, and Dynamics

Self Cite

View full text Add to dashboard Cite

show abstract

Investigation of wrinkling behaviour in the creased thin-film laminates

Kamaliya

Upadhyay

Mallikarachchi

2021

Int J Mech Mater Des

View full text Add to dashboard Cite

Stability and control of radial deployment of electric solar wind sail

Zhu

2021

Nonlinear Dyn

Self Cite

View full text Add to dashboard Cite

The paper studies the stability and control of radial deployment of an electric solar wind sail with the consideration of high-order modes of elastic tethers. The electric solar wind sail is modeled by combining the flexible tether dynamics, the rigid-body dynamics of central spacecraft, and the flexible-rigid kinematic coupling. The tether deployment process is modeled by the nodal position finite element method in the arbitrary Lagrangian-Eulerian framework. A symplectic-type implicit Runge-Kutta integration is proposed to solve the resulting differential-algebraic equation. A proportional-derivative control strategy is applied to stabilize the central spacecraft's attitudes to ensure tethers' stable deployment with a constant spinning rate. The results show the electric solar wind sail requires thrust at remote units in the tangential direction to counterbalance the Coriolis forces acting on the tethers and remote units to deploy tethers radially successfully. The parametric analysis shows the tether deployment speed and the thrust magnitude significantly impacts deployment stability and tether libration, which opens the possibility of successful deployment of tethers by using optimal control. Finally, the analysis results show that radial deployment is advantageous due to the isolated deployment mechanism, and a jammed tether can be isolated from affecting the deployment of rest tethers.Keywords Space tether Á Electric solar wind sail Á Multibody dynamics Á Rigid-flexible coupling Á Flexible structural stability Á Nodal position finite element method Á Arbitrary Lagrangian-Eulerian

show abstract

Characteristics of coupled orbital-attitude dynamics of flexible electric solar wind sail

Cited by 29 publications

References 39 publications

Flight Dynamics and Control Strategy of Electric Solar Wind Sails

Flight Dynamics and Control Strategy of Electric Solar Wind Sails

Investigation of wrinkling behaviour in the creased thin-film laminates

Stability and control of radial deployment of electric solar wind sail

Contact Info

Product

Resources

About