Study of Viscoelasticity and stability Effects on an Optimal Design of ULD Scientific Balloon: Simulation and Experimental Verification
Abstract
The need for uniform stress distribution of early super pressure balloons led a long period of the development of several optimal designs of scientific balloons for significant benefits in public outreach and education for the next generation of scientists, engineers and technicians. Scientific ballooning is continuing to evolve. The paper is divided into two sections. First section deals with the design, development and optimization of a cost effective high altitude ultra-long duration scientific balloon which are made up of stiff meridional tendons of a specific material. The numerical calculation along with the analysis of elastic buckling pressure, anisotropic viscoelstic effects is taken into consideration. The second section deals with the stability of the ULD balloon constructed by joining together a number of gores so that the structure forms a series of bulges and lobes. Under certain condition at high altitudes the nominal configuration of these structures is unstable and hence the analysis for development scenario must be envisaged so that the structure will never assume its intended shape which may end up in distorted but more stable configuration. The stability of the structure is shown depending upon the geometry and calculations using different softwares like MATLAB 2012b, ANSYS 14.0 (APDL).
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E3098S