2^nd International Conference and Exhibition on Satellite & Space Missions July 21-23, 2016 Berlin, Germany

Joaquín Alonso Montesinos has completed his PhD at the age of 26 years from the University of Almería, Spain and postdoctoral studies from the same University. He is member of a research group ‘Solar energetic resources, Climatology and Atmospheric physics’ at the University of Almería. He has published more than 10 papers in reputed journals, has authored and coauthored different conference papers, both national and international, and has participated in different projects related to solar radiation. Furthermore, he is serving as reviewer in different impact journals.

Predicting atmospheric features is key to managing solar plants and is therefore necessary for correct electrical grid management. An unexpected atmospheric change can provoke a range of problems related to various solar plant components affecting the electricity generation system and, in consequence, causing alterations in the electricity grid. Mainly, changes are produced by cloud transients which make that solar radiation decreases a lot in a short temporal space. For that reason, to have the knowledge about future alterations in the solar resource is very important to avoid problems in the components of solar power plants and in the electricity integration into the electrical grid. In this work, a methodology based on remote sensing techniques has been developed to predict Direct Normal Irradiance (DNI) for one hour ahead, in 15 minutes periods, where Meteosat Second Generation satellite images were processed to identify cloud motions and to predict the DNI according to these motions. Normalized root-mean square error (nRMSE) presented a value of about 30% from 15 minutes to one hour

Gabriel López studied Theoretical Physics at the Universidad de Granada (Spain). He completed his PhD from the Universidad de Almería (Spain). He is currently an Associate Professor at the Escuela Técnica Superior de Ingeniería of the Universidad de Huelva (Spain). He has co-authored more than 20 articles in reputed journals. The main research topic is the solar resource modeling and forecasting using artificial intelligence techniques and remote sensing. At present, he leads one of the three research teams of the Spanish national project PRESOL.

Determination of atmospheric aerosol properties is a key step in many meteorological and energy fields. This is the case for solar concentrating systems, where atmospheric turbidity is the main attenuating factor under cloudless sky conditions. Remote sensing and ground-based observations have experienced large advances in the retrieval of several aerosol parameters in recent years. Different methods have been developed for automatic detection of cloudless conditions. Unfortunately, these automatic cloud screening algorithms are not totally reliable, and could lead to biased results. In this study, we analyze the efficiency of the cloud screening method used in the Aerosol Robotic Network (AERONET) to provide their Level 1.5 data from raw Level 1.0 data from the radiometric site located in Huelva (Spain). The presence of clouds is detected from visual inspection of digital images obtained by an all-sky camera, which is located/co-located with the AERONET sunphotomer. A total of 240 days with concurrent data for both the sun photometer and the all-sky camera were available for the year 2015. Results show that about 10% of Level 1.5 sun photometric data are contaminated with clouds. On the other hand, we also found cloud-free sky cases where raw Level 1.0 data were removed from Level 1.5. The effect of misclassification on the average daily aerosol optical depth is also presented.

Andrey Yakovlev has completed his PhD at the age of 27 years from Leningrad State University and postdoctoral studies from Leningrad State University. He is the senior research scientist of Saint-Petersburg State University (department of physical mechanics) and the associate professor of Lesgaft National State University of Physical Culture and Sports. He has published more than 20 papers in various journals and was one of authors of one textbook.

In connection with preparation and carrying out of some international programs the interest to research of a dust near the lunar surface recently has again increased. It is known that the lunar surface is electro-statically charged by Moon’s interaction with local plasma environment and the photoemission of electrons due to solar radiation flux. The potential of a lunar surface is usually determined by a condition that total density of a current on its surface is equal to zero, and this fact is connected with low conductivity of the Moon. In that time it is known that for nonatmospheric space body the potential's distribution near to a surface is nonmonotonic [1]. The electric charge on a dust particle and height of lifting of micro-particles over the lunar surface are defined by the joint numerical decision of the equation of charge's evolution and the equation of dust's movement under the influence of electric and gravitational forces. For nonmonotonic potential for particles with radius 10 nanometers the maximum height of lifting cannot exceed several hundred meters [1]. If the angle of incidence of solar rays increase, the maximum height of lifting of dust particles decreases. These results of numerical simulation do not correspond to available experimental data. In the present work we study the influence of presence of monolayer of hydrogen compounds on lunar surface and existence of partially ionized exosphere near to the surface on results of calculations. 1. Yakovlev A.B. The corrected method for calculation of electrostatic potential near to surface of nonatmospheric space body and the analysis of possible modes of dust particles motion. Seventh Polyakhov's Reading, 2015 International Conference on Mechanics. IEEE. 2015. DOI: 10.1109/POLYAKHOV.2015.7106785. 2015 International Conference on Mechanics - Seventh Polyakhov's Reading, Febr. 2-6, Saint-Petersburg, Print ISBN: 978-1-4799-6824-1, DOI: 10.1109/POLYAKHOV.2015.7106785, Publisher: IEEE.

Jaeheung Park has completed his PhD at the age of 28 years from Korea Advanced Institute of Science and Technology (KAIST) and postdoctoral studies from National Central University (NCU) in Taiwan and GeoForschungsZentrum (GFZ) in Potsdam, Germany. Now he is a scientist of Korea Astronomy and Space Science Institute (KASI).

Plasma density irregularities in the ionosphere can affect trans-ionospheric communication between ground facilities and satellites, and constitute an essential part of the space weather. Different latitudes and local times host different types of irregularities, such as equatorial plasma bubbles (EPBs) in nighttime low-latitude regions, medium-scale traveling ionospheric disturbances (MSTIDs) in the mid-latitude ionosphere, main trough at subauroral latitudes, and polar cap patches inside the polar cap. Low-Earth-Orbit (LEO) satellites equipped with in-situ plasma density probes or dual-band Global Navigation Satellite System (GNSS) antennae are useful for investigating these irregularities globally. In this presentation are given characteristic features of the various plasma density irregularities observed by LEO satellites, including man-made disturbance in the ionosphere. Their climatological distributions as well as concomitant deflections in electric and magnetic field are also discussed.

George – Cristian Potrivitu is currently a JAXA technical trainee within the Department of Space Flight Systems preparing his master thesis in electric propulsion plasma diagnostics. Aerospace engineering young graduate from the Military Technical Academy Bucharest (2014) with a major in aircraft and aviation engines, he conducted during his undergraduate studies two research projects on lubrication and space electric propulsion – Hall Effect Thrusters – at the French National Scientific Research Centre (CNRS) (2012) and the Italian company ALTA S.p.A. (2013-2014), respectively. After his graduation he worked for a short period for the Romanian Air Force Staff as an aviation safety engineer at the Bureau of Technical Investigations of Aviation Incidents. In 2014 he began the classes of the double master degree program, Joint European Master in Space Science and Technology, known as Space Master. He followed the classes in space science, technology and instrumentation at Julius Maximilians Universität Würzburg in Germany, Luleå Tekniska Universitet at Kiruna Space Campus in Sweden and Université Paul Sabatier Toulouse III, France, preparing his master degree major in space techniques and instrumentation (2016).

Between the space electric thrusters, the Hall Effect Thrusters (HET), or Stationary Plasma Thrusters (SPT), are the devices with a simple geometry and complicated working physics processes that produce lower specific impulses than an ion thruster but a higher thrust – to – power ratio, so, in order to operate properly a HET needs a lower power level than an ion thruster. In order to produce the radial magnetic field needed for the operational process of a HET, a magnetic system has to be designed. The magnetic system is a key component in a HET that establishes the magnetic field that succeeds to trap the electrons emitted by the external cathode, reducing their transverse mobility in the ionization region so that the propellant neutrals can be ionized with high efficiencies. In the same time, the crossed field configuration imparts an azimuthal motion to the electrons (the drift velocity) which forms the Hall current (“electrons cloud”). The presentation aims to underline the main design principles for the magnetic system of a 1kW Hall Effect Thruster, following the path of a classical methodological approach. Magnetic field simulations using FEMM – Finite Element Method Magnetics are underpinned by the main theoretical aspects of the issue and by an extensive study of the main influential factors on the magnetic system design process. In the end an uniform radial magnetic field with a well defined topology within the thruster’s acceleration channel is obtained, reaching a maximum strength of around 200mT in the vicinity of the channel exit plane. Moreover a discussion on coils current value optimisation for different thruster operational modes is attained.

Yuliya F. Novik is a staff member of the Laboratory of Self-Organization System Modeling at the United Institute of Informatics Problems of the National Academy of Sciences of Belarus. She graduated from the Belarusian State University, Department of Mechanics and Mathematics in 2015. She is studying in a master program at the Researcher Training Institute of the National Academy of Sciences of Belarus. Her scientific supervisor is Professor, DSc Alexander M. Krot. She has published 8 scientific works including 1 article in refereed journal.

The type of equation defines entirely the solutions of this equation and properties of respective dynamical system. However, there exist often difficulties to find the exact solutions of equations of mathematical physics, in particular, in the equations describing the dynamic state of the plasma. Therefore, we consider a class of nonlinear differential equations depending on the order and type of nonlinearity of these equations. The nonlinearity type is determined by the coefficient of the highest derivative of the unknown function and by the linearity or non-linearity of other terms of equation. As a result, we obtain 4 types of quasi-linear partial differential equations. It has been found that the soliton solutions occur in the equations of the third type. Therefore, we can speak about a necessary condition for the existence of soliton solutions in the corresponding equation. We also define a class of equations for which the dispersion ratio is carried out. This ratio is a necessary condition for the existence of soliton solutions and the satisfying properties of these solutions.

Shaheera has completed her MSc. degree in major Astronomy and Space Science, at the age of 32 years, from King Abdulaziz University in June 2015, with an excellent grade and 4.94 G.P.A . The presented paper is her first paper and she preferred to participate it in the conference before publishing. Her thesis is about Invariant Relative orbits taking into account the influence of J2 perturbation by using Kamel perturbation technique.

This research describes the mean orbit elements method, to finding the initial conditions that minimize the drift resulting from perturbation on invariant relative orbits. Working with the Hamiltonian model of the relative motion including the perturbation effects of the asphericity of the Earth (J2, J3 and J4 perturbation), the secular drift of the longitude of the ascending node and the sum of the argument of perigee and mean anomaly are set equal between all neighboring orbits. By having all orbits drift at equal angular rates on the average, they will not separate over time due to the influence of the second order geo-potential perturbation. The expressions for the second order conditions that guarantee the drift rates of two, or more, neighboring orbits are equal on the average are derived. In this work, an atlas of graphs for the polar invariant relative orbits conditions was introduced. These conditions have been modeled as surfaces in 3D, using Mathematical program, for the Earth's zonal harmonics. The surfaces appeared the all possibilities of choosing the mean elements of leader orbit and differences in momenta elements between leader and followers orbits.