Exploring optimum power unit of propulsion system for high altitude airship

Different schemes of a propulsion system have a distinguished influence on the overall performance of high altitude airship. There is an optimum power, called optimum power unit, to achieve the lowest propulsion system and energy system weight for a high altitude airship. The paper represents an optimization model of the optimum power unit for a high altitude airship. Firstly, the optimal Latin hypercube design method is applied to obtain the sample points of the distributed low power propulsion system. Secondly, the surrogate model, which is used to establish the optimization model, is obtained by responding surface method based on these sample points. The computational model of the energy system is obtained by the airship’s location and the working time. Finally, the multi-island genetic algorithm is used to find the optimum power unit for a typical high altitude airship. Furthermore, the optimization work under different typical power levels and diameters is carried out to verify the effectiveness of the optimum power unit design method. It has been found that the identical result validates the effectiveness of the optimum power unit design method.

[1]  Saliha Şahin,et al.  Optimisation of ultrasonic-assisted extraction of antioxidant compounds from Artemisia absinthium using response surface methodology. , 2013, Food chemistry.

[2]  Thomas Weise,et al.  Global Optimization Algorithms -- Theory and Application , 2009 .

[3]  Anthony Colozza.  PV / Regenerative Fuel Cell High Altitude Airship Feasibility Study , 2003 .

[4]  Antonio Dumas,et al.  An Airship Design Methodology Based on Available Solar Energy in Low Stratosphere , 2010 .

[5]  J. -F. M. Barthelemy,et al.  Approximation concepts for optimum structural design — a review , 1993 .

[6]  Y. Yokomaku,et al.  Overview of stratospheric platform airship R&D program in Japan , 2000 .

[7]  Necmi Taspinar,et al.  Radial Basis Function Neural Networks for Channel Estimation in MIMO-OFDM Systems , 2013, Arabian Journal for Science and Engineering.

[8]  Anthony Colozza,et al.  High Altitude Propeller Design and Analysis Overview , 1998 .

[9]  Xiao Guo,et al.  Conceptual Design Optimization of High Altitude Airship in Concurrent Subspace Optimization , 2012 .

[10]  Rajkumar S. Pant,et al.  Multi-Disciplinary Optimization of Airship Envelope Shape , 2004 .

[11]  Peter Funk,et al.  Experimental investigations on hull-fin interferences of the LOTTE airship , 2003 .

[12]  Timothy W. Simpson,et al.  Sampling Strategies for Computer Experiments: Design and Analysis , 2001 .

[13]  Thomas J. Santner,et al.  Design and analysis of computer experiments , 1998 .

[14]  Wenping Song,et al.  A Modified AUSM+-up Scheme for Simulation of Flow Around Rotary Blades , 2014 .

[15]  Anthony Colozza,et al.  Initial Feasibility Assessment of a High Altitude Long Endurance Airship , 2013 .

[16]  Bifeng Song,et al.  Effect of High-Altitude Airship's Attitude on Performance of its Energy System , 2007 .