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Environmental Adaptability Evaluation Model for Stratospheric Airships

ZHANG Lixue, WANG Zhongwei   

  1. College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2012-05-28 Revised:2012-09-03 Online:2013-04-25 Published:2013-04-23
  • Supported by:

    National Defence Pre-research Foundation (GFZX0402XX01)

Abstract:

In this paper, the environmental characteristics of the stratosphere, especially the 20 km height stratosphere, is described, and the influence of diversified environmental factor to performance of stratospheric airships which should have the ability that reside there for a long time is analyzed. On this basis, a stratospheric airship environmental adaptability evaluation index system is developed. In view of the large differences existing in the magnitude and physical meaning of the attribute indices about stratospheric airships' conceptual design performance evaluation, a comprehensive evaluation model which combines physical programming and analytic hierarchy process is proposed. Finally, a real example is provided. The example and analysis of the results show that resisting wind speed allowance and energy generation exhaust ratio play a crucial role in the environmental adaptability capacity evaluation of stratospheric airships. They should receive more attention during airship conceptual design and argumentation.

Key words: stratospheric airship, environmental adaptability, physical programming, analytic hierarchy process, evaluation model, concept design

CLC Number: