Proceedings ArticleDOI
Analysis and retardation of helium permeation for high altitude airship envelope material
Durga Vasudevan,Hariharan Mohan,Saarang Gaggar,Ramesh Burela Gupta +3 more
- Vol. 2148, Iss: 1, pp 030027
Reads0
Chats0
TLDR
In this paper, the authors proposed and discussed alternate Computational Fluid Dynamics based 2D and 3D approaches to analyse the permeation of the gas through the envelope material, particularly for high altitude airship applications, and proposed a method to determine the best suited material for the airship envelope through a qualitative and quantitative permeation analysis of different combinations of material options.Abstract:
Airships are fast gaining popularity as one of the most prominent modes of surveillance, reconnaissance and providing connectivity in remote areas. These airships work on the Archimedes’ principle, and employ gases which are lighter than air to stay afloat in the atmosphere. These gases are the most critical and costly support element for the usage of such airships as the permeation of these gases through the envelope material limits the flight duration of the airship and further increases the cost associated with transporting and refilling of the airship, thereby limiting its utility. Engineering the material of the envelope, so as to be able to minimize the leakage of gas, becomes the most important challenge for engineers designing the airships. The traditional experimental techniques used to analyse the permeation through the laminate are known to be extremely sensitive to minor variations in temperature and pressure and involve specialized equipment, time and money. This paper proposes and discusses alternate Computational Fluid Dynamics based 2D and 3D approaches to analyse the permeation of the gas through the envelope material, particularly for high altitude airship applications. In addition to this, this paper proposes a method to determine the best suited material for the airship envelope through a qualitative and quantitative permeation analysis of different combinations of material options.read more
Citations
More filters
Journal ArticleDOI
Strategic analysis of the prospects for the use of aerostat in the global economy
Artem Rada,A. Kuznetsov +1 more
TL;DR: In this article , the authors used regression analysis and forecasting based on the linear trend equation, as well as the Porter five forces analysis model to determine the state and prospects of using lighter-than-air aircraft in the global economy.
Journal ArticleDOI
Marketing research of the Russian aerostat market
TL;DR: In this paper , the state and strategic alternatives for the development of the Russian market for aerostats on the basis of marketing research were determined using the methods of primary analysis and systematization of commercial information, SWOT analysis, and determination of the degree of consistency by the Kendall coefficient of concordance.
References
More filters
Journal ArticleDOI
Numerical prediction of in-plane permeability for multilayer woven fabrics with manufacture-induced deformation
TL;DR: In this article, a unit cell based Computational Fluid Dynamics model is presented for predicting the permeability of multilayer fabric structures, starting from the configuration of un-deformed fabric, the deformation is simulated geometrically by accounting for self-imposed kinematic constraints of interweaving yarns.
Journal Article
Modeling and CFD-simulation of woven textiles to determine permeability and retention properties
TL;DR: In this paper, the pore morphology of high-density multi-filament woven fabrics is analyzed and the effects of mechanical loads on the fabric morphology and on the permeability values are analyzed.
Journal ArticleDOI
Optimal designing of polyurethane-based nanocomposite system for aerostat envelope
TL;DR: In this article, an optimal designing of thermoplastic polyurethane (TPU) nanocomposite formulation, particularly targeting aerostat envelope for enhanced weathering and gas barrier properties, was reported.
Journal ArticleDOI
Determination of Pore Size, Porosity and Pore Size Distribution of Woven Structures by Image Analysis Techniques
TL;DR: In this article, a new and accurate method of image analysis for pore size distribution (PSD) determination of woven fabrics is presented, which can be ranked in a decrease order successfully.
Proceedings ArticleDOI
Measurement of helium gas transmission through aerostat material
R. Ashford,B. Bata,E. Walsh +2 more