Vadim Yudintsev

Samara National Research University · Theoretical Mechanics Department

The active deorbiting and passivation of launch vehicles has become key for the implementation of modern space debris mitigation guidelines. Appropriate engine restart conditions must be provided as part of this process. Ullage motors have been traditionally employed to induce active settling and ensure a gas-free propellant supply to the engines....

The motion of a rotating tethered system for active debris removal is considered. The system consists of the space tug and space debris object connected by the tether. The influence of the relative tug-debris orbital motion on the longitudinal oscillations of the tether is investigated. Linearized equations of the tether oscillations are derived, a...

The active deorbiting and passivation of launch vehicles has become key for the implementation of modern space debris mitigation guidelines. Appropriate engine restart conditions must be provided as part of this process. Ullage motors have been traditionally employed to induce active settling and ensure a gas-free propellant supply to the engines....

The concept of reducing environmental impact from a launch vehicle after the emergency cutoff of the liquid-propellant engine is proposed. A key component of the proposed concept is an onboard propellant gasification system, installed on the rocket blocks of the launch vehicle. The onboard propellant gasification system performs forced gasification...

A new method of a large space debris de-orbit using tethered space tug is presented. It is proposed to use the rotation of the tethered tug-debris system to provide the necessary tension of the tether that allows applying the tug’s thrust along the line of the tether in the direction of space debris. Due to the rotation of the tethered tug-debris s...

A new method of a large space debris de-orbit using tethered space tug is considered. It is proposed to use the rotation of the tethered tug-debris system to provide necessary tension of the tether. The rotation of the tethered system allows to apply tug’s thrust along the tether in the direction to the space debris object. Angular rate of the teth...

A new technique for active debris removal using tethered space tug is presented. Instead of towing the captured debris object by pulling on the attached tether it is proposed to use the rotation of the tethered tug-debris system that allows to apply the tug’s thrust along the tether pushing the system. The rotation of the tug-debris tethered system...

The dynamic similitude criteria for detachable sections of rocket like fairing leaf are presented. The criteria ensure the similarity of the center of mass and attitude motion of the small-scale model to the full scale body. The application of the presented criteria is illustrated by a numerical experiment. These criteria can be used to conduct sma...

The developed mathematical model of the tethered tug–debris satellite system with the debris object, considered as a rigid body, allows exploration of the motion of the system during the active debris removal missions. The debris object as a rigid body slightly affects the stationary solutions of the equation of the system but can induce chaotic pi...

This paper focuses on the problem of control of the tug-debris space tether system for debris De-orbiting. The motion of the tether system is considered when the space tug and tethered debris have an initial relative velocity, which can affect the tether tension. We investigate two stages of the space tether motion: tether elongation stage and teth...

One of the most promising methods of geosynchronous debris reorbiting is touchless actuation using electrostatic force. This paper investigates the dynamics and stability of two charged spacecraft formation when both spacecraft are charged with the same sign so that the active spacecraft (space tug) pushes the passive spacecraft (debris object) to...

A new technique of docking of a space tug with spent non-cooperative orbital stage by using a deployable elastic probe is proposed. The developed mathematical models demonstrate the proposed method and cover primary stages of the relative motion of the space tug and debris, including docking stage and the probe retraction stage. The simulation resu...

Chaotic motion of the tethered towing of debris using a low-thrust tug is considered. Stable and unstable stationary solutions are presented for the in-plane motion of the system in a circular orbit, which depend on the value of the tug's thrust. The unstable solutions give rise to the chaotic motion of the system in the presence of additional dist...

The dynamics of the rigid body connected with the space tug by the elastic rope in a gravitationless space is considered. The equations of motion are derived from a Lagrange formalism. The influence of initial conditions on the rigid body behaviour is studied. The posibility of existence of critical behaviour of movement which can cause the entangl...

Presentation for the engineering notes V. V. Yudintsev, V. S. Aslanov Detumbling Space Debris Using Modified Yo-Yo Mechanism. Journal of Guidance, Control, and Dynamics, Vol. 40, No. 3 (2017), pp. 714-721. http://dx.doi.org/10.2514/1.G000686

The chaotic motion of the tethered tug-debris system with the low thrust tug is considered in the context of active debris removal (ADR) missions. Stable and unstable stationary solutions are presented for the in-plane motion of the system in a circular orbit, which depend on the tug's thrust and orbital angular rate. The unstable solutions give ri...

The chaotic motion of the tethered tug-debris system with the low thrust tug is considered in the context of active debris removal (ADR) missions.Stable and unstable stationary solutions are presented for the in-plane motion of the system in a circular orbit, which depend on the tug's thrust and orbital angular rate.The unstable solutions give rise...

The article presents the analysis of the dynamics of small spacecraft (SS) with affixed solar panels which have a certain degree of elasticity due to their construction. A mathematical model of spacecraft disturbed motion during the boost phase is formed which takes into account the body elasticity and the presence of liquid filling. A finite-dimen...

Active debris removal using a space tug with a tether is one of the promising techniques to decrease the population of large non-functional satellites and orbital stages in near Earth orbits. Properties of debris should be taken into account in the development of the space tugs. In this paper we consider the motion of a debris objects with fuel res...

Active debris removal is one of the promising techniques that will decrease the population of large, non-functional spacecraft (space debris) on orbit. Properties of space debris should be taken into account during planning an active debris removal mission. In this paper the thrusting phase of tethered deorbit of large space debris with flexible ap...

Active exploration of the space leads to growth of a near-Earth space pollution. The frequency of the registered collisions of space debris with functional satellites highly increased during last 10 years. As a rule a large space debris can be observed from the Earth and catalogued, then it is possible to avoid collision with the active spacecraft....

The motion of a free gyrostat consisting of a platform with a triaxial ellipsoid of inertia and a rotor with a slight asymmetry with respect to the axis of rotation is considered. Dimensionless equations of motion for a system with perturbations caused by the small asymmetries of the rotor are written in Andoyer-Deprit variables. These perturbation...

At present, thousands of space debris are located in Earth's orbits. It has a different size ranging from a few millimeters to tens of meters. Tethered systems are promising technology to de-orbit the space debris. The tethers have been proposed for reduction of space debris either through momentum transfer or use of electrodynamic effects. Another...

A spatial motion of a large passive satellite (space debris) and a space tug connected by an elastic tether is considered. The motion of the system is excited by a thrust force acting on the space tug. Major attention is given to a derivation of the equations of the motion based on the Lagrange formalism. Correctness of the mathematical model is pr...

We study the motion of the free dual-spin gyrostat spacecraft that consists of the platform with a triaxial ellipsoid of inertia and the rotor with a small asymmetry with respect to the axis of rotation. The system with perturbations caused by a small asymmetry of the rotor and the time-varying moments of inertia of the rotor is considered. The dim...

We consider the chaotic motion of the free gyrostat consisting of a platform with a triaxial inertia ellipsoid and a rotor with a small asymmetry with respect to the axis of rotation. Dimensionless equations of motion of the system with perturbations caused by small asymmetries of the rotor are written in Andoyer-Deprit variables. These perturbatio...

Multibody systems with changing structure are considered. These systems have stages in their motion that distinct from each other by degree of freedom (DOF), joint connection structure and joint types. These mechanical systems are common in space application e.g. separation subsystems. Single coordinate set is used to formulate Newton–Euler equatio...