Review of the Air Force Academy The Scientific Informative Review, No 1(16)/2010 Braşov SCIENTIFIC ADVISERS Cmdr Prof Gabriel-Florin MOISESCU, PhD – “Henri Coandă” Air Force Academy, Brasov, Romania Brigadier General Prof Miroslav KELEMEN, PhD – Armed Forces Academy, Liptovky Mikulas, Slovakia Lt Col Prof Ioan DEAC, PhD – “Carol I” Defense National University, Bucharest, Romania Prof Ion DINESCU, PhD – “Henri Coandă” Air Force Academy, Brasov, Romania Prof Nicolae JULA, PhD – Military Technical Academy, Bucharest, Romania Prof Victor MANOLE, PhD – Academia de Studii Economice, Bucharest, Romania Prof Vasile MACOVICIUC, PhD – Academy of Economic Studies, Bucharest, Romania Prof Ştefan NEDELCU, PhD – “Henri Coandă” Air Force Academy, Brasov, Romania Prof Stelian PÂNZARU, PhD – “Spiru Haret” University, Brasov, Romania Prof Dominica RĂDULESCU, PhD – Washington & Lee University, Lexington, Virginia, USA Cmdr Prof Constantin ROTARU, PhD – Military Technical Academy, Bucharest, Romania Prof Gheorghe SAMOILESCU, PhD – “Mircea cel Bătrân” Naval Academy, Constanţa, Romania Prof Florentin SMARANDACHE, PhD – University of New Mexico, Gallup Campus, USA Prof Milan SOPOCI, PhD – Armed Forces Academy, Liptovky Mikulas, Slovakia Associate Prof Margareta BOACĂ, PhD – “Carol I” Defense National University, Bucharest, Romania Associate Prof Pavel BUCKA, PhD – Armed Forces Academy, Liptovky Mikulas, Slovakia Associate Prof Ella CIUPERCĂ, PhD – National Intelligence Academy, Bucharest, Romania Associate Prof Lavinia GAVRILĂ, PhD – “Henri Coandă” Air Force Academy, Brasov, Romania Lt Col Associate Prof Jaromir MARES, PhD – University of Defense, Brno, Czech Republic Lt Col Associate Prof Robert SZABOLCSI, PhD – “Zrinyi Miklos” National Defense University, Budapest, Hungary Associate Prof Alexandru ŞTEFAN, PhD – Bloomfield College, Bloomfield, New Jersey, USA Associate Prof Ioan Gheorghe RAŢIU, PhD – “George Baritiu” University, Brasov, Romania Associate Prof Horia TÂRZIU, PhD – “Henri Coandă” Air Force Academy, Brasov, Romania EDITORIAL BOARD Editor – in-chief: Lt Col Associate Prof Marian PEARSICĂ, PhD Editorial assistant: Capt Assistant Prof Adrian LESENCIUC Editors: Capt Cmdr Prof Mircea BOŞCOIANU, PhD Associate Prof Doru LUCULESCU, PhD Associate Prof Diana ILIŞOI, PhD Assistant Prof Liliana MIRON, PhD Assistant Daniela NAGY Designers: Math Carmen URSOIU Printing operations: Eng Daniela OBREJA * * * Partners: Zentralblatt MATH – ZMATH Online Database, Berlin, Germany ProQuest LLC, Ann Arbor, Michigan, USA EBSCO Publishing, Inc., Ipswich, Massachusetts, USA The editorial board claims no responsibility concerning the scientific contents of the published papers in this issue. The authors take 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. © May, 2010 - “Henri Coandă” Air Force Academy Printed House THE ADDRESS OF THE PUBLISHING BOARD: ROMANIA “Henri Coandă” Air Force Academy 160, Mihai Viteazu St, Brasov 500183 Phone: +40268423421, Fax: +40268422004 WEB Site: www.afahc.ro/revista/revista.html E-mail: [email protected] 0269 – 05/2010 ISSN 1842 – 9238 Review of the Air Force Academy C O N T E N T S TECHNICAL SCIENCES AND APPLIED MATHEMATICS Pavel NEČAS, Ionică CÎRCIU, Constantin ROTARU, Mircea BOŞCOIANU An Analysis of the Stability and Performances of Rotary Wing Micro Aerial Vehicles............................................................................................... 05 Haibin WANG, Florentin SMARANDACHE, Yanqing ZHANG, Rajshekhar SUNDERRAMAN Single Valued Neutrosophic Sets............................................................................. 10 Alex STEFAN Mobile Health Care System. e-Learning Security System Design.............. 15 Ioan Gheorghe RATIU, Ioan Daniel RATIU, Mihail Gabriel RATIU Considerations About Fighting Against Cybercrime……………….................... 20 Beazit ALI, Gheorghe SAMOILESCU About Aerodynamic Calculus Of Impellers Using The Numerical Methods….. 29 Gheorghe ANTON, Gheorghe RADU Oscillatory Solutions for the Systems Of Difference Equations with Variable Coefficients................................................................................................ 33 Horia TARZIU, Anamaria COMES The Study of Theoretical Problems Related to the Military Equipement and Technologies with the Help of Computer Assisted Graphics........................ 39 Ognyan STOYKOV The Use of Pilot Transmission Function for Airplane Control During the Process of Aiming..................................................................................................... 43 Cezar VASILESCU Applying Decision Theory Techniques to Information Security Related Decisions.................................................................................................................... 47 Emilia SCHEIBNER Dimensioning Of Heating Networks Pipes............................................................. 51 MANAGEMENT AND SOCIO-HUMANITIES Aurel Ion CLINCIU, Ruxandra Maria CLINCIU Percent Errors in Standard Muller-Lyer and Right-Angled Illusions................ 56 Lubomír BELAN, Lenka KURHAJCOVÁ System Of Project Manage In Phase Of Realization............................................. 62 Oana-Andreea PÎRNUŢĂ, Alina-Adriana ARSENI Common Law and Civil Law: The Major Traditions of the Western Legal Culture ……………………………………………………………………... 68 3 Contents Cătălin CIOACĂ The Economical Security Concept in the Context of the Global Economic Crisis …………………………………………………………………... 74 Daniela BELU Good Resistance to Manipulation and the Competence of Applying Ethics in Management.............................................................................................. 80 Elena-Simona INDREICA, Camelia TRUŢA Membership in Organizations and Self-Esteem in the Context of Biological Involution in Adult Female...................................................................................... 86 Răzvan-Lucian ANDRONIC, Anca ANDRONIC Romanian Non-Governmental Organizations’ Evolution.................................... 90 Kinga KOLUMBÁN Female Authorship Revisited in Margaret Atwood’s The Blind Assassin……... 94 Aura CODREANU Organisational Communication Patterns Underlying the Concept of Organisational Behaviour........................................................................................ 98 MILITARY SCIENCES Pavel BUČKA, Pavel NEČAS Basic Operation Capabilities of the Slovak Air Force.......................................... 104 Adrian LESENCIUC The Professional Profile Of The Romanian Military............................................ 109 Daniela NAGY Miscommunication: Failing to Understand Those Gi’s ?……………………..... 114 Livia Ecaterina TĂTAR The Role of Marketing-Based Approaches in Increasing the Military Education’s Performance ………………………………………………………… 118 Carmen POSTELNICU The External Information Flow of the Strategic and National Security Information………………………………………………………………………... 122 Cornel ARAMĂ, Ioan BĂLOS, Ovidiu MOŞOIU Eco-Drive – The Safe, Fluent and Environment Friendly Driving Style ……… 126 Notes for Authors………………………………….................................................. 132 4 Technical Sciences and Applied Mathematics AN ANALYSIS OF THE STABILITY AND PERFORMANCES OF ROTARY WING MICRO AERIAL VEHICLES Pavel NEČAS*, Ionică CÎRCIU**, Constantin ROTARU***, Mircea BOŞCOIANU** *Armed Forces Academy of General Milan Rastislav Štefánik Liptovský Mikuláš, Slovakia **“Henri Coanda” Air Force Academy, Brasov, Romania, ***Military Technical Academy, Romania Abstract: Micro aerial vehicles are small objects dedicated to a new set of D3 missions (dull, dirty, dangerous missions) not capable for the classic UAV solutions. First we present the benefits of rotating wing micro aerial vehicles (RW-MAVs) and a classification of the mission scenarios. According to the new missions we define the basic requirements that RW-MAV that should be satisfied in order to successfully complete urban and indoor missions. We define the new 4RW-MAV architecture and we propose a comparative analysis with the characteristics and performances of different classic configurations. Based on a better maneuverability, portability and agility, the 4RW-MAV architecture is promising but depending on the geometry there are some differences regarding the performances, stability and the payload capacity. In urban or indoor missions the maneuverability is crucial and thus the new architecture should provide better movement capabilities. The 4RW-MAV configuration is effective in indoor narrow space with a capability to maneuver in a very fast and effective way, impossible for other configurations. The net effect relevant for control during autorotation landing is analyzed by adding a vertical offset relative to the vertical position predicted in the absence of ground effect. This vertical offset is estimated from flight data and taken into account accordingly. Keywords: micro aerial vehicle (MAV), rotary wing MAV (RW-MAV), flight dynamics. 1. INTRODUCTION Based on the new technologies and the downsizing of the payload and sensors, the Autonomous RW-MAV flight represents a effective envelope of civil applications for challenging control problem with high UAV systems (UAS) is extended and the dimensional, asymmetric, nonlinear dynamics. research is focus on the ways to find new RW- MAVs are widely regarded to be architectures, new solutions for reducing the significantly harder to control than fixed-wing costs of missions. According to their special micro