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Algorithm design and implementation of dynamic star simulator Xiaofang Zhao1, Guangbin Liu2 and Chaoshan Liu3 1,2Department of ontrol science and engineering, the high tech-institude, 710025, Xi’an, China 3Department of physics, the high tech-institude, 710025, Xi’an, China e-mail: aiguozhe139@yahoo.com.cn, lgb@epg.net, lichs65@yahoo.com.cn Keywords: Star Sensor, Simulation of Star Image, District Dividing Abstract In order to realize the simulation testing and calibration of star tracker in the lab, a simulation algorithm for dynamic and celestial sphere star image was proposed.
One is outside field stargazing test [1,2], which is to conduct the stargazing test in the true ground environment This method is influenced seriously by the atmosphere, also it requires a lot of manpower, material and financial resources, and can’t simulate in-orbit state of star sensor.
Journal of system simulation 4(5):1195-1211 [5] Wang Y, Zhang G, Sun G, et al (2011) Software simulation of a dynamic display system for star map Journal of Changchun University of Science and Technology (Natural Science Edition) 5(1):154-158 [6] Song Y, Yang G, Tian Z (2010) Research and Implementation of Space Scene Modeling Computer Simulation 6(1):40-42 [7] Yang J, Zhang T, Song J, et al (2010) The algorithm research of ground celestial sphere and dynamic star simulator Journal of System Simulation 7(9):202-206 [8] Hu Y, Gu Y (2008) Design and Realization of a Dynamic Display Algorithm for Star map.
Journal of Astronautics 8(3):849-853

The simulation of materials which wins the majority of user’s acceptance is not easy.
In the finite element analysis, the control of the mesh density is very important because of the damage and strain concentration and the softening of concrete materials.
(2) Contrast to the results of the experiment and numerical simulation, it shows the CDP model in ABAQUS elastoplastic damage simulation of concrete materials is feasible
Acknowledgements This work was financially supported by the China Natural Science Foundation (51078011 and 51178014).
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Material and methods Experimental materials 1.1 Sampling site The soil sampling site used in this study was an experimental pecan forest (30.258321, 119.731123) with a land grade of 0° and a variety of plants growing uniformly on the surface.
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● The structure of the spiral blade parts The method which used in stamping springback parts for a certain type of cement mixer truck spiral blade, plate thickness 4 mm, material for QSTE420TM, as shown in figure 1 shows. figure AD, BC for section line, AB, CD is helix.
It is pointed out that die correction process is to reduce material part at the same time also had an increasing part of the material, the actual repair mode is not possible, the solution is the type for the ascension, make negative into zero or positive, to reduce the amount of material increase.
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Model Test 3.1 model sample production Instruments, ZBL-U520 nonmetallic ultrasonic detector, belong to Beijing ZBL Science and Technology Co.
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This implies that motor cars, motorcycles and tricycles emit more than the accepted limits of the criteria air pollutants (HC, CO and CO2) into the environment which is detrimental to materials, plants, animals and human beings.
In IOP Conference Series: Materials Science and Engineering Vol. 413, No. 1 (2018) p. 012055
International Journal of Ambient Energy, 36 5 (2015) 235-241
Journal of the Brazilian Chemical Society, 24 3 (2013) 375-384
International Journal of Mechanical Engineering and Technology (IJMET), 9 9 (2018) 671-684.

Acknowledgements Financial support provided by National Natural Sciences Foundation, China (No. 41172274) is gratefully acknowledged.
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A Study on Liquid-Liquid Mixing in a Stirred Tank with a 6-Blade Rushton Turbine, Iranian Journal of Chemical Engineering. (2008) 5(4): 12-22
Computational studies of the pitched blade turbines design effect on the stirred tank flow characteristics, European Journal of Mechanics B/Fluids. (2010) 29:236-245
IchemE, 7(1994) 2:657-668 [7] Franco M., Giuseppina M., Davide P., and Alessandra P, Mixing time in high aspect ratio vessel with multiple impeller, Chemical Engineering Science, (2013) 101:712-720 [8] Zalc J.M., Szalai E.S., Alvarez M.M. and Muzzio F.J., Using CFD to understand chaotic mixing in laminar stirred tanks, AIChE Journal, (2002), 48;2124-2134
CFD Analysis of Circle Grid Fractal Plate Thickness on Turbulent Swirling Flow, Applied Mechanics and Materials. (2014) 466: 109-113 [10] Manshoor B, Nicolleau FCGA and Beck SBM.
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Materials and Methods Materials.
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