Results 21 to 30 of about 1,276,956 (323)

Developing a New Explicit Guidance Method for the Trajectory Correction of Sub-Orbital Modules [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2013
This paper presents an explicit guidance method which could be used in the problems of orbit correction for sub-orbital modules. This method is based on solving the Lambert problem.
A. R. Alemi Naeeni, J. Roshanian
doaj  

State-Dependent Molecular Dynamics

open access: yesMolecules, 2014
This paper proposes a new mixed quantum mechanics (QM)—molecular mechanics (MM) approach, where MM is replaced by quantum Hamilton mechanics (QHM), which inherits the modeling capability of MM, while preserving the state-dependent nature of QM.
Ciann-Dong Yang, Hung-Jen Weng
doaj   +1 more source

Bound State Solution of Dirac Equation for Generalized Pöschl-Teller plus Trigomometric Pöschl-Teller Non- Central Potential Using SUSY Quantum Mechanics

open access: yesJournal of Mathematical and Fundamental Sciences, 2014
The bound state solution of the Dirac equation for generalized PöschlTeller and trigonometric Pöschl-Teller non-central potentials was obtained using SUSY quantum mechanics and the idea of shape invariance potential.
Suparmi, Cari
doaj   +1 more source

The Prediction of Thermo Physical, Vibrational Spectroscopy, Chemical Reactivity, Biological Properties of Morpholinium Borate, Phosphate, Chloride and Bromide Ionic Liquid: A DFT Study [PDF]

open access: yesInternational Journal of New Chemistry, 2019
In the light of computational chemistry, based on morpholinium cation-based Ionic Liquid, their different types of physical, chemical, and biological properties is highlighted.
Ajoy Kumer   +3 more
doaj   +1 more source

Flexible control of an ultrastable levitated orbital micro-gyroscope through orbital-translational coupling

open access: yesNanophotonics, 2023
Introducing rotational degree of control into conventional optical tweezers promises unprecedented possibilities in physics, optical manipulation, and life science. However, previous rotational schemes have largely relied upon the intrinsic properties of
Li Wenqiang   +5 more
doaj   +1 more source

Element sets for high-order Poincar\'e mapping of perturbed Keplerian motion [PDF]

open access: yes, 2018
The propagation and Poincar\'e mapping of perturbed Keplerian motion is a key topic in celestial mechanics and astrodynamics, e.g. to study the stability of orbits or design bounded relative trajectories. The high-order transfer map (HOTM) method enables
Armellin, Roberto, Gondelach, David J.
core   +2 more sources

Assessment of Flyby Methods as Applied to Close Encounters among Asteroids

open access: yesAerospace
Orbital flybys have been extensively studied for spacecraft missions, resulting in effective mathematical and physical models. However, these models’ applicability to natural encounters involving asteroids has not been explored.
Nicolò Stronati   +3 more
doaj   +1 more source

Optimum Transition Orbit Design for Launch Vehicles [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2010
In this paper, Design of flight trajectory in unpowered phase namely “Coast Phase” which is important in energy reduction in transition orbit of spacecrafts and launch vehicles is considered.
R. Zardashti, A. A. Nikkhah
doaj  

Activities of PMO optical space debris survey [PDF]

open access: yesAnais da Academia Brasileira de Ciências
Space debris division of PMO is devoted to play an important role in the research of orbital mechanics and the development of space debris observation techniques in China.
ZHANG CHEN, ZHAO CHANGYIN
doaj   +2 more sources

A fully-connected three-user quantum hyperentangled network

open access: yesQuantum Frontiers, 2023
Exploiting the fantastic features of quantum mechanics, a hyperentangled quantum network encoded in multiple degree of freedoms (DOF), e.g., polarization and orbital angular momentum DOFs, can encode more qubits per transmitted photon and offers a ...
Yiwen Huang   +5 more
doaj   +1 more source

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