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Review of the Air Force Academy The Scientific Informative Review, Vol. XV, No.3 (35)/2017 DOI: 10.19062/1842-9238.2017.15.3 BRAŞOV - ROMANIA SCIENTIFIC ADVISERS EDITORIAL BOARD Colonel Gabriel RĂDUCANU, PhD EDITOR-IN CHIEF (“Henri Coandă” Air Force Academy, Braşov, Romania) Col Prof Constantin-Iulian VIZITIU, PhD LtCol Assoc Prof Laurian GHERMAN, PhD (Military Technical Academy, Bucharest, Romania) (“Henri Coandă” Air Force Academy, Braşov, Romania) Prof Ion BĂLĂCEANU, PhD (Hyperion University, Bucharest, Romania) EDITORIAL ASSISTANTS Prof Necdet BILDIK, PhD (Celal Bayar University, Turkey) Prof Constantin ROTARU, PhD Assoc Prof Ella CIUPERCĂ, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (National Intelligence Academy, Bucharest, Romania) Maj lect. Cosmina ROMAN, PhD Assoc Prof Nicoleta CORBU, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (National School of Political Studies, Romania) Researcher Maria de Sao Jose CORTE-REAL, PhD EDITORS (Universidade Nova, Lisbon, Portugal) Researcher Alberto FORNASARI, PhD LtCol Assoc Prof Adrian LESENCIUC, PhD (“Aldo Moro” University of Bari, Bari, Italy) (“Henri Coandă” Air Force Academy, Braşov, Romania) Prof Vladimir HORAK, PhD Prof Traian ANASTASIEI, PhD (University of Defense, Brno, Czech Republic) (“Henri Coandă” Air Force Academy, Braşov, Romania) Assoc Prof Valentin ILIEV, PhD Assoc Prof Ludovic Dan LEMLE, PhD, (Technical University of Sofia, Bulgaria) (“Politehnica” University of Timisoara, Romania) Assoc Prof Berangere LARTIGUE, PhD Prof Eng. Jaroslaw KOZUBA, PhD (“Paul Sabatier” University, Toulouse, France) (Polish Air Force Academy, Deblin, Poland) Prof Marcela LUCA, PhD (Transilvania University, Braşov, Romania) Assist Prof Liliana MIRON, PhD Assoc Prof Doru LUCULESCU, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (“Henri Coandă” Air Force Academy, Braşov, Romania) Lect. Daniela NAGY, PhD Prof Vasile MACOVICIUC, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (Academy of Economic Studies, Bucharest, Romania) Col Ovidiu MOSOIU, PhD Prof Yoshifumi MANABE, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (Kogakuin University, Tokyo, Japan) Col Vasile ŞANDRU, PhD Prof Vitalijs PAVELKO, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (Riga Technical University, Latvia) Col Prof Marian PEARSICĂ, PhD PRINTING (“Henri Coandă” Air Force Academy, Braşov, Romania) Eng Daniela OBREJA Prof Eng Ştefan-Gheorghe PENTIUC, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (“Ştefan cel Mare” University, Suceava, Romania) Researcher Asher SHAFIR, PhD DESIGNER (Tel Aviv University, Tel Aviv, Israel) Eng Mariana GHINDĂOANU Prof Florentin SMARANDACHE, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (University of New Mexico, Gallup Campus, USA) Inf Adina DOBRIŢOIU Assoc Prof Ivanka Milkova STAMOVA, PhD (“Henri Coandă” Air Force Academy, Braşov, Romania) (Burgas Free University, Burgas, Bulgaria) Assoc Prof Alexandru ŞTEFAN, PhD (Manhattan Institute of Management, New York, USA) Assoc Prof Michael TODOROV, PhD © December, 2017 (Technical University of Sofia, Bulgaria) Assoc Prof Bledar TOSKA, PhD Visa 0574-12/2017 (University of Vlore, Vlore, Albania) I.S.S.N. 1842-9238 Assoc Prof Cvatelina VELKOVA, PhD (“Nikola Vaptsarov” Naval Academy, Varna, Bulgaria) Assistant Prof Anantkumar Janaradau UMBARKAR. PhD (Walchand College of Engineering, India) Prof Vlad Ştefan BARBU, PhD (University of Rouen, France) Prof Vasile PREDA, PhD (University of Bucharest, Romania) The editorial board claims no responsibility concerning the scientific contents of the published papers in this issue. The authors take the full responsibility for the contents. No part of this publication may be reproduced, partially or totally, without the prior written permission of the publishing board. “Henri Coandă” Air Force Academy Publishing House, 160, Mihai Viteazul St., Braşov, ROMÂNIA Phone: +40 268 423421, e-mail: [email protected] Review of the Air Force Academy No.3 (35)/2017 C O N T E N T S Cvetelina VELKOVA NUMERICAL 3D TRANSONIC FLOW SIMULATION OVER A WING . 5 Jacques ABEN THE 14 JULY PARADE, OR THE MILITARY CEREMONIAL AS A POLITICAL INSTRUMENT . 15 Filip PANAYOTOV, Ivan DOBREV, Fawaz MASSOUH, Michael TODOROV INFLUENCE OF THE NUMBER OF VORTEX ELEMENTS ON THE STABILITY AND ACCURACY OF THE NUMERICAL SIMULATION FOR A ROTOR IN HOVER . 27 Oana FILIP, Marian ALEXANDRU, Dan Nicolae ROBU INTEGRATING A BASIC EMULATING NETWORK WITH MOBILE COMMUNICATION INFRASTRUCTURE . 37 Jenica-Ileana CORCAU, Liviu DINCA MATHEMATICAL MODEL AND NUMERICAL SIMULATIONS FOR PHOTOVOLTAIC PANELS . 47 Constantin ROTARU, Gabriel RĂDUCANU ANALYTICAL APPROACHES OF DETONATION WAVES . 57 Titus BĂLAN, Petruța BÎRLĂ, Cătălina MARCU, Ionela ONCERU IoT WEB-SHARED VARIABLES – PUBLISH, COLLECT AND ANALYSIS IN THE CLOUD . 65 Razvan Andrei VISAN, Marian ALEXANDRU, Dan Nicolae ROBU SS7 SIGNALLING OVER ETHERNET USING IPSL IN A MOBILE COMMUNICATIONS TESTING LABORATORY . 71 Casandra Venera PIETREANU, Cornel DINU A PROBABILISTIC ASSESSMENT OF THE RELIABILITY OF AVIATION SYSTEMS . 77 Vasile PRISACARIU, Bogdan HERCIU, Andrei LUCHIAN ASPECTS REGARDING THE ELECTRIC PROPULSION OF THE UAV MULTICOPTER . 85 Marius Valeriu CÎRMACI-MATEI, Adrian ROTARIU, Alexandru DENA, Octavian ORBAN, Constantin ROTARU NUMERICAL ANALISYS OF IMPACT PHENOMENON BETWEEN A FRANGIBLE PROJECTILE AND THIN METALLIC PLATES USED IN AIRCRAFT STRUCTURES . 95 3 Review of the Air Force Academy No.3 (35)/2017 Gabriel RĂDUCANU, Ionică CÎRCIU UNMANNED AERIAL VEHICLE FUTURE DEVELOPMENT TRENDS . 105 Laurian GHERMAN DEFENCE ARCHITECTURE BASED ON INFORMATION AGE OODA 111 LOOP . Carmen ȘTEFAN TRENDS IN PILOTS TRAINING . 119 Sebastian POP, Andrei LUCHIAN, Răzvan Georgian ZMĂDU, Emil OLEA THE EVOLUTION OF UNMANNED AERIAL VEHICLES . 125 Doru LUCULESCU METHOD OF EVALUATING THE RELIABILITY OF DEMOUNTABLE 133 ASSEMBLIES WITH CATCHING DEVICES . Dinu PĂDURARIU, Nicolae CREȚU, Eduard MIHAI MARITIME SECURITY THREATS IN THE BLACK SEA REGION . 137 Ovidiu MOŞOIU, Ion BĂLĂCEANU, Marius MOLDOVAN PARTICULARITIES ON MODIFICATION OF THE MILITARY POWER 143 BALANCE IN RUSSIAN-UKRAINIAN SPACE . Dan-Călin BEŞLIU LEADERSHIP – ESSENTIAL QUALITY OF AN EFFICIENT 149 MANAGER . Brînduşa Maria POPA E-LEARNING – CHALLENGES AND OPPORTUNITIES . 155 Alexandru-Nicolae TUDOSIE MATHEMATICAL MODEL FOR AN AIRCRAFT TURBOSHAFT-TYPE 161 AUXILIARY POWER UNIT . Book Review . 171 Notes for Authors . 175 4 Review of the Air Force Academy No.3 (35)/2017 NUMERICAL 3D TRANSONIC FLOW SIMULATION OVER A WING Cvetelina VELKOVA Department of Technical Mechanics, Naval Academy Nikola Vaptsarov,Varna, Bulgaria ([email protected]) DOI: 10.19062/1842-9238.2017.15.3.1 Abstract: This scientific paper presents performed numerical 3D transonic flow simulation over a wing. It is developed a suitable numerical model of the wing and it is created a three- dimensional mesh around the wing using the available techniques in ANSYS software. Also, it is obtained iterative convergence by using recommended solver settings. The performed numerical 3D transonic flow simulation over a wing give the opportunity to visualize 3D flow characteristics to gain physical insights. The main goal is to determine whether the numerical flow simulations over the wing performed by computational tools provide appropriate approaches for calculations of the complex 3D transonic flow characteristics. The main value of the paper is that the obtained results with the realized numerical flow simulation are compared with the experimental data and NASA CFD results using the source [1]. Keywords: aerodynamics, wing, ANSYS, lift and drag coefficients, transonic flow 1. INTRODUCTION Using the approach developed by Cornell University, [1] it is performed a 3D transonic turbulent CFD Simulation using ANSYS 15 and the solver is Fluent. For the properly investigation of the flow around the wing it has been created a three-dimensional mesh using the available techniques in ANSYS software. The performed numerical 3D transonic flow simulation over a wing give the opportunity to visualize 3D flow characteristics to gain physical insights. The main goal is to determine whether the numerical flow simulations over the wing performed by computational tools provide appropriate approaches for calculations of the complex 3D transonic flow characteristics. The main value of the paper is that the obtained results with the realized numerical flow simulation are compared with the experimental data and NASA CFD results using the source [1]. 2. PROBLEM SPECIFICATION Using the approach in source [1] the performed numerical 3D transonic flow simulation over the wing is trying to obtained the results obtained by NASA using the wind, and this is verified by comparison of the numerical results with the experimental data, [2]. Citied source [5] the Onera M6 wing is a classic CFD validation case for external flows because of its simple geometry combined with complexities of transonic flow (i.e. local supersonic flow, shocks, and turbulent boundary layers separation). Flow over the Onera M6 wing is transonic and compressible. Quoting [6] conventional CFD methods are applicable in this case because they required a calculation for the entire three-dimensional field about the body. 5 Numerical 3D Transonic Flow Simulation over a Wing The wing flow experiences supersonic conditions, a shock and boundary layer separation. The wing has no twist. There is no side-slip in the simulation. The flow conditions are given below at Table 1: Table 1 Flow Conditions, [1] 2.1. Mathematical