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Article
Time-optimal rendezvous transfer trajectory for restricted cone-angle range solar sails
The advantage of solar sails in deep space exploration is that no fuel consumption is required. The heliocentric distance is one factor influencing the solar radiation pressure force exerted on solar sails. In...
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Article
Low-thrust trajectory optimization in a full ephemeris model
The low-thrust trajectory optimization with complicated constraints must be considered in practical engineering. In most literature, this problem is simplified into a two-body model in which the spacecraft is ...
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Article
Blow-up, quenching, aggregation and collapse in a chemotaxis model with reproduction term
In this paper, we consider the following chemotaxis model with ratio-dependent logistic reaction term $$\left\{ \begin{gathered} \tf...
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Article
A method for classifying orbits near asteroids
A method for classifying orbits near asteroids under a polyhedral gravitational field is presented, and may serve as a valuable reference for spacecraft orbit design for asteroid exploration. The orbital dynam...
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Article
A survey on orbital dynamics and navigation of asteroid missions
Asteroid exploration is currently one of the most concerned topics among international space agencies. Orbital dynamics and navigation are obviously crucial for asteroid exploration. This paper aims to give a ...
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Article
The experimental study on the contact process of passive walking
The passive dynamic walking is a new concept of biped walking. Researchers have been working on this area with both theoretical analysis and experimental analysis ever since McGeer. This paper presents our com...
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Article
Sensitivity analysis for a type of statically stable sailcrafts
Two types of sensitivities are proposed for statically stable sailcrafts. One type is the sensitivities of solar-radiation-pressure force with respect to position of the center of mass, and the other type is t...
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Article
Asymmetric somatic hybridization between UV-irradiated Citrus unshiu and C. sinensis: regeneration and characterization of hybrid shoots
In the present paper, attempts were made to explore the possibility of employing ultraviolet (UV) irradiation in citrus asymmetric fusion for transfer of limited amount of favorable traits from a desirable cul...
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Article
Rapid Determination of Gold in Geological Samples Using Flow Injection Solid-Phase Chemiluminescence
The solid-phase chemiluminescence analysis of gold on the surface of an anion-exchange resin was studied. A method for the fast determination of gold using flow injection was established. The anion-exchange re...
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Article
Strongly Singular Integral Operators on Weighted Hardy Space
In this paper, we obtain that a strongly singular integral operator is bounded on \( L^{p}_{w} \) space for 1 < p <...
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Article
An orbital design method for satellite formation flying
An orbital design method of the formation initialization based on the relative orbital element method is presented. It firstly constructed the relative motion equation of the satellite formation flying in term...
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Article
The Estimates for Sharp Maximal Functions of Multilinear Strongly Singular Integral Operators
In this paper, the author obtains that the multilinear operators of strongly singular integral operators and their dual operators are bounded from some L p (ℝ ...
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Article
Useful relative motion description method for Perturbations analysis in satellite Formation flying
A set of parameters called relative orbital elements were defined to describe the relative motion of the satellites in the formation flying. With the help of these parameters, the effect of the perturbations o...
