Dmitry Sizov

• PhD
• Nazarbayev University

This paper discusses three phases of the space debris removal with harpoon assistance: capture, tether deployment, and towing. The harpoon impact momentum is used to detumble the target. Equations of motion for each phase are given in dimensionless form, which significantly reduces the number of parameters describing the system. The aim of the pape...

The paper deals with the attitude dynamics of CubeSats with flexible stabilizing panels in free molecular flow taking into account the aerodynamic damping. In addition to the operating position, characterized by zero angle of attack, aerodynamically stabilized satellites may have intermediate equilibrium positions. The presence of unstable equilibr...

The paper is devoted to the chaotic attitude dynamics of magnetic satellites with stabilizing panels. The pitch motion under the gravitational and restoring aerodynamic torques and small perturbations, namely, the magnetic torque and the aerodynamic damping, is considered. On the example of a CubeSat having an aerodynamic instability, it is demonst...

With the growing popularity of small satellites, the interaction with the air in low and especially in very low Earth orbits becomes a significant resource for passive angular stabilisation. However, the possibility of spin motion remains a considerable challenge for missions involving aerodynamically stabilised satellites. The goal of this paper w...

This paper deals with the attitude motion of VLEO CubeSats during and after the deployment of flexible stabilizing panels driven by torsion springs. Unlike in higher orbits, in VLEO, the attitude motion of the satellite is primarily influenced by the interaction with the atmosphere. Therefore, in order to study the evolution of the satellite attitu...

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This paper focuses on the active removal of spent upper stages from LEO using de-orbiting devices. It proposes a method of regulating aerodynamic loads on the target during its re-entry by utilizing the features of spatial attitude motion. A mathematical model of the re-entry process is developed, and numerical simulations are conducted, demonstrat...

This study deals with the attitude motion of small magnetic axisymmetric satellites in near-equatorial circular low Earth orbits/very low Earth orbits subjected to the joint action of the environmental torques, namely, aerodynamic, gravitational, and magnetic. It is shown that if the satellite has only a longitudinal component of the intrinsic magn...

Данный документ представляет собой перевод на русский язык статьи Aslanov V. S., Sizov D. A. Chaos in flexible CubeSat attitude motion due to aerodynamic instability // Acta Astronautica No. 189 (2021) pp. 310–320. https://www.sciencedirect.com/science/article/abs/pii/S0094576521004768 https://doi.org/10.1016/j.actaastro.2021.08.055 В статье рассм...

Данный документ представляет собой перевод на русский язык статьи Aslanov V. S., Sizov D. A. Chaotic pitch motion of an aerodynamically stabilized magnetic satellite in polar orbits // Chaos, Solitons, and Fractals (2022) Volume 164, November 2022, 112718. https://www.sciencedirect.com/science/article/pii/S0960077922008979 https://doi.org/10.1016/j...

The process of removal of a passive object by an active spacecraft is considered. It consists of three phases: harpoon capture, tether deployment and towing. The impact impulse from the harpoon is used to reduce the angular velocity of the target and to drive it into a towing state. A thrust control law for the tether deployment phase is proposed a...

The 3U CubeSat with deployable side panels designed for passive aerodynamic stabilization in a rarefied atmosphere is considered. The goal of this study is to increase the orbital lifetime of the satellite by modification of its nose section. It is shown that the pyramidal nose substantially decreases the aerodynamic drag of the satellite and, cons...

The attitude motion of a small satellite with deployable side panels designed for passive aerodynamic stabilization in a rarefied atmosphere is considered. The influence of the aerodynamic and gravitational torques on the motion near the unstable and stable equilibrium positions is studied. The presence of the unstable equilibrium position and flex...

Рассмотрен процесс уборки пассивного объекта активным космическим аппаратом, состоящий из трех этапов: захват объекта гарпуном, развертывание троса, буксировка. Ударный импульс от гарпуна используется для снижения угловой скорости объекта и перевода его в буксировочное состояние. Предложен алгоритм определения положения точки захвата на поверхности...

The paper considers the process of removing a passive object by an active spacecraft, consisting of three stages: harpooning the object, deploying the tether, and towing. The shock pulse from the harpoon is used to reduce the angular velocity of the object and transfer it to the towing state. An algorithm for determining the position of the capture...

A process of a spent upper stage removal from low Earth orbit is considered, which consists of three phases: towing of the stage using a tether; descent of the stage into the low-density atmosphere; motion of its debris fragments after the breakup caused by the aerodynamic and thermal loads. It is shown that the attitude motion of the stage during...