Plenary Lecture
Numerical Modelling of Trajectory of High Altitude Missions
Professor Nicolae Jula
Faculty of Military Electronic and Information Systems
Military Technical Academy – Bucharest
Romania
E-mail: nicolae.jula@gmail.com
Abstract: This paper shows several stratospheric flights performed with weather balloons both in Romania and Australia.
A typical 6 DOF model is presented for the payload in order to allow a future implementation of controlled payload recovery through the usage of a steerable parafoil.
Also an ascent rate calculation model is presented that takes into account a standard US 1976 atmosphere model as well as the thermodynamics of the lifting gas inside the weather balloon.
We present the typical payload used as well as the APRS communication package used for tracking and telemetry real-time as well as the photo and video equipment used for flight imaging.
Altitude and trajectory are presented as functions of time and discussion is done regarding the best GPS installation position in order to ensure GPS coverage data for most of the flight, including the burst. Various flight dynamics characteristics are described including the ascent and descent rates as well as a detailed description on how to achieve a desired ascent rate.
Future aerosol detection mission is proposed in the framework of the next generation of satellites aimed at actively detecting aerosol pollution in the atmosphere. High altitude balloon platforms are proposed to provide calibration and validation of satellite data in various regions of interest worldwide.
Brief Biography of the Speaker: Nicolae Jula was born on December 14th, 1945 in Hunedoara County, Romania. He received the degree in electrical engineering in 1969 from Bucharest Polytechnic Institute and Ph.D. in 1986. During 1969 – 1978, he was scientific researcher at National Institute for Aerospace Research, Bucharest and he participated in the international project for research, design and production of the military aircraft YUROM versions IAR – 93 and ORAO – 2. He was in charge with development of electrical installations, special installations and board equipment for the military aircraft. Since 1978, he has been working within Military Technical Academy Bucharest and he hold all university positions available within the Academy. Currently he is PhD thesis advisor within the Military Technical Academy Bucharest – Faculty of Military Electronic and Information Systems.
He also holds the position of full professor at the University South-East Europe “Lumina” teaching the course “Sensors and measurement equipment”. His present research interest includes sensor interface systems, analogue circuit design, signal processing, transducers and electrical servomotors, measurement theory and low-frequency measurements. He has published more 195 technical papers and 20 books and he was involved in numerous national research projects out of which he had Project Coordination responsibilities in 11 projects. The national projects were developed on the following programs: AEROSPATIAL, SECURITATE, CALIST, RELANSIN and CEEX.
Currently he has research interests in the field of monitoring of energy losses in strategic infrastructures (powerlines, oil pipes) through the application of IT capabilities and unmanned aerial vehicles.
Out of the international contracts in which he is involved, an important project is FP7-CEARS project which was finished in 2010. The main objective of the project is to enhance regional cooperation in aeronautical research and development among different universities and research centers from the Central European region involving: Austria, Bulgaria, Czech Republic, Estonia, Herzegovina, Latvia, Lithuania, Poland, Romania, Serbia, Slovakia and Hungary. He is full member of the Aero-Astronautics Committee from the Technical Division of the Romanian Academy since 2002. He is also Vicepresident of the Academy of Cybernetics “Stefan Odobleja” founded in 1982 and registered in Switzerland in Lugano.