Qingbin Zhang

• National University of Defense Technology

In the field of aerospace, solving the boundary problem associated with the parachute-capsule system remains a big challenge. The conventional Monte Carlo method proves inadequate for acquiring comprehensive boundary information. To address this issue, this paper introduces a novel tube prediction scheme by leveraging the natural geometric characte...

The large-angle pendulous motion of the parachute system, which increases the touchdown impact loading to the structure and saturates the control system, is very disadvantageous to the security of the system. To determine the root cause of the pendulum motion and provide improved design to mitigate the risk, there is an urgent need for stability an...

Computationally expensive constrained optimization problems are challenging owing to their high complexity and computational cost. To solve these problems efficiently, a kriging-assisted bi-objective constrained global optimization (BOCGO) algorithm is developed, where three phases with three bi-objective subproblems are performed. In phase I, the...

Flexible capture has high applicability in the removal of space debris. In this paper, a novel adhesive capture mechanism is proposed, the multibody dynamic modeling method of the capture system is detailed, and an investigation of the adhesive capture process by numerical simulation is presented. First, the passive trigger mechanism of the capture...

The tethered-net is one of the most promising flexible space debris cleaning technologies to be developed in recent years. Momentum and geometric analysis were used to select four characteristic parameters of the tethered-net ejection system—the radius of the circumcircle of the net, the ratio of the bullet mass to the net mass, the ejection veloci...

A multi-objective optimization procedure to design parachute triggering algorithm, based on Monte Carlo analysis of flight uncertainties, has been developed in this paper. Most of Mars explorations missions utilize parachute for a safe descent through the lowest of the atmosphere. The parachute triggering algorithm is designed to accommodate the ra...

Space net capture is an innovative concept for active debris removal that provides a prospective method for the removal of large, non-cooperative space targets. The design of a space net capture system must meet two basic requirements: maximizing the capture ability and minimizing the system cost. This paper presents an inexpensive multi-objective...

A mesh adaptation method is proposed for solving optimal control problems with nonsmooth control. The original optimal control problem (OCP) is transcribed into a nonlinear programming (NLP) problem by using the Runge-Kutta discretization method, in which the NLP can be solved by using standard nonlinear programming codes. The method employs colloc...

In recent years, there have been a steady increase in the small satellite launch market. With the rapid development of novel launchers, for small satellite operators, how to effectively and efficiently choose appropriate launch vehicles has become the major concern. Based on the updated launch record, a reliable launch data source for multi-attribu...

Aiming at improving the range of wing-body combination aircraft at hypersonic flow conditions and exploring the application of morphing technology in hypersonic aircraft, morphing aircrafts with different morphing modes have been proposed. The aerodynamic characteristics and wing efficiency of morphing aircraft with different morphing modes have be...

A new sequential method based on multi-resolution approximation is proposed for solving computationally expensive multi-objective optimization problems. A traditional strategy is to decompose a multi-objective optimization problem into a number of single-objective optimization problems, whereby the PF can be regarded as a function of weights. There...

Result of simulation example 2. (XLSX)

Result of simulation example 1. (XLSX)

With the continuous progress in active debris-removal technology, scientists are increasingly concerned about the concept of space-net capturing system. The space-net capturing system is a long-range-launch flexible capture system, which has great potential to capture non-cooperative targets such as inactive satellites and upper stages. In this wor...

Result of the ball-falling test. (XLSX)

Result of the airdrop test. (XLSX)

Result of the static tensile test. (XLSX)

Sounding rockets are the only direct detection method for near-space and are utilized for different kinds of scientific research. Dynamic models are the foundation of research on sounding rockets. However, no dynamic models have included all the working processes of a sounding rocket. A high-precision dynamic model of a sounding rocket is proposed...

The coupling behaviors of a special parachute’s inflation incorporating fluid–structure interaction and flight dynamics are investigated based on the multibody dynamic model and LS-DYNA nonlinear analysis code. A new coupling model is developed to predict both the opening phase of parachute and the trajectory of payload during airdrop mission in lo...

A lumped-mass model is established to investigate the deployment dynamics of the non-rotating space net. Then the net configuration, stress distribution, energy change during the deployment process and the effects of ejection parameters, orbit altitude, capture direction on net deployment are simulated and analyzed. The multi-objective optimization...

The deployment process of the rotating space net system is divided into two phases of arm deployment and net deployment. The system dynamic model is established according to different characteristics of the two phases. And the MK (Melnikov–Koshelev) control law is adopted. From the simulation of the rotating space net deployment process under MK co...

Since the real test of space net is difficult to conduct in the space environment, schemes of the net ground and airdrop test are proposed in this chapter. The ground test verifies the feasibility of the net ejection mechanism, and the measuring data indicate that the engineering approximate calculation model based on a lumped mass model can be use...

The space net capture process is simulated with the commercial software LS-DYNA, including deployment process, impact process, and net-closing process. Then the dynamic characteristics and effects of different indices on each process are simulated and analyzed to investigate multiple capture properties of space net, providing solid theoretical basi...

To study the dynamics and control of space net, the dynamic characteristics of the cable element need to be investigated. In this chapter, the dynamic models of cable element, including continuous model, spring damper model and multi-rigid-body model, are developed. And the process of stress wave propagating in the cable and reflecting at the inter...

To control the growth of space debris in the geostationary earth orbit (GEO), a novel solution of net capture and tether-tugging reorbiting is proposed. After capture, the tug (i.e., active spacecraft), tether, net, and target (i.e., GEO debris) constitute a rigid-flexible coupled tethered combination system (TCS), and subsequently the system is tr...

This book covers the topics of theoretical principles, dynamics model and algorithm, mission analysis, system design and experimental studies of space nets system, aiming to provide an initial framework in this field and serve as a ready reference for those interested. Space nets system represents a forefront field in future development of aerospac...

Net capturing system is one of most promising conceptions that designed for the space debris removal. A critical issue in the design and analysis of net capturing system is the deployment modeling technology. The dynamic behavior of net capturing system in different projection modes is investigated based on finite segment approach. The simulation r...

Flexible net, a new kind of future structure for advanced concepts in space exploration, has special potential application, such as capturing space debris and building huge antenna. A critical issue in the design and analysis of space net system is deployment modelling technology. As reliable tests cannot be performed under gravity, numerical analy...

To analyze the parachute dynamics and stability characteristics of precision airdrop system, the fluid-structure interaction (FSI) dynamics coupling with the flight trajectory of a parachute-payload system is comprehensively predicted by numerical methods. The inflation behavior of a disk-gap-band parachute is specifically investigated using the ar...

The transient dynamic behaviour of supersonic disk-gap-band parachutes in a Mars entry environment involving fluid structure interactions is studied. Based on the Multi-material Arbitrary Lagrange–Euler method, the coupling dynamic model between a viscous compressible fluid and a flexible large deformation structure of the parachute is solved. The...

Parachute inflation is coupled with sophisticated fluid-structure interaction (FSI) and flight mechanic behaviors in a finite mass situation. During opening, the canopy often experiences the largest deformation and loading. To predict the opening phase of a parachute, a computational FSI model for the inflation of a parachute, with slots on its can...

A spline wavelet collocation method is presented to solve optimal control problem (OCP) of flexible spacecraft, which is often required to reorient and reposition with minimum manoeuvre time or fuel consumption. It is very difficult and computationally expensive to determine the open-loop optimal control inputs for flexible spacecraft, because the...

To control the growth of space debris in the geostationary earth orbit (GEO), a novel solution of net capture and tether-tugging reorbiting is proposed. After capture, the tug (i.e., active spacecraft), tether, net, and target (i.e., GEO debris) constitute a rigid-flexible coupled tethered combination system (TCS), and subsequently the system is tr...

The inflation process of a special parachute with slots and a fixed payload is investigated using a multimaterial arbitrary Lagrangian-Euler-coupled numerical approach, which considers fluid-structure interaction within the LS-DYNA nonlinear analysis code. The transient dynamic solver is set up using a Lagrangian-Euler penalty method, and a numeric...

In this work, a volume and longitudinal stability-constrained multiobjective aerodynamic shape optimization is conducted. The aerodynamic shapes of lifting bodies are parameterized by using class function/shape function transformation parameterization method for maximum design flexibility. Hypersonic aerodynamic objectives and constraints are analy...

This paper proposes a multiobjective optimization method for the control-structure integrated design of flexible spacecraft to reduce the total mass and optimize the control performance. The equations of motion for flexible spacecraft are derived from the Lagrange's principle and the assumed modes method. The design variables are the structural dim...

In many engineering optimization problems, objective function evaluations can be extremely computationally expensive. The effective global optimization (EGO) is a widely used approach for expensive optimization. Balance between global exploration and local exploitation is a very important issue in designing EGO-like algorithms. This paper proposes...

Parachute is a kind of high performance decelerators with sophisticated dynamic behaviors, especially for the inflation process, which is a typical fluid-structure interaction (FSI) problem. This article proposes a numerical study on the inflation of ringslot parachute in low speed airdrop. Combing with the CFD/CSD and Arbitrary Lagrangian Euler (A...

Numerical study on the inflation of some life parachute(flat round slots)is investigated．The computational mechanic models as well as the finite element models of structure and flow field are built．then by utilizing the Arbitrary Lagrange—Euler(ALE)coupling method,the 3D dynamic results of Fluid-Structure Interaction of parachute is presented．Canop...

To investigate the complex dynamic interaction behaviors of a slot-parachute,a numerical simulation analysis is performed on the inflation process of a slot-parachute used in airdrop.Based on the parametric design language,a fluidstructure interaction(FSI)model is built which consists of a 3D initially folded slot-parachute structure with a cylindr...

In recent years, defunct satellites mitigation in the geostationary orbit (GEO) has become a hot issue in the space field. How to transfer defunct geostationary satellites to the graveyard orbit safely, economically and efficiently presents new challenges to spacecraft dynamics and control. This paper conducts an in-depth investigation on tether-tu...

A numerical simulation of parachute deployment is presented by multibody model. The parachute system is regarded as a collection of rigid links. Then a constraint force algorithm for a open chain multibody systems is constructed for the identification of constraint forces appearing in the equations. The model can be used to simulate the "LineSail"...