RESEARCH ON BUOYANT FORCE DEPENDENCE OF SPECIALIZED AEROSTAT ON ITS MOTION VIRABLES

Abstract

The international scientific-research MAAT (Multibody Advanced Airship for Transport) project supported by the European Union on the Seventh framework program solves the global problem on the ecologically safe transportation. One of its sections has the aim to research the aerodynamics of the specialized high-altitude balloons — so-called shuttles. They are designed for supporting communications between the earth-based airports and the aerostats which are permanently cruising in the stratosphere — cruisers. One of the aerodynamic research tasks needed to develop an appropriate mathematical model is solved. The problem on the mathematical description of the buoyant force changes under the shuttle plunging in its both undisturbed and disturbed position is set and solved. For that, a simulation experiment based on the so-called “electronic airflow” through the computer modeling is conducted. The computing results of the buoying drag force under varying conditions are processes through the regression analysis techniques. The obtained expression permits to identify the mathematical model of the shuttle motion dynamics presented through Euler's equations. The results are illustrated by the table and graphical data.

Keywords

• stratosphere
• air vehicle
• aerostat buoying principle
• resistance forces and moments
• computer simulation.