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Energies 2019, 12(2), 234; https://doi.org/10.3390/en12020234

Multi-Parameter Optimization for the Wet Steam Accumulator of a Steam-Powered Catapult

College of Automation, Harbin Engineering University, Harbin 150001, China
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Received: 5 December 2018 / Revised: 27 December 2018 / Accepted: 8 January 2019 / Published: 13 January 2019
(This article belongs to the Section Energy Storage and Application)
PDF [573 KB, uploaded 13 January 2019]

Abstract

Selecting the optimal parameters for wet steam accumulator of steam-powered catapult is an important task, due to launching safety. There is no literature on the topic of the parameters optimization for wet steam accumulator of steam-powered catapult. The genetic algorithm (GA) was used to determine the optimal wet steam accumulator in this article. The sink-off-the-bow (SOB), angle of attack and rate of climb were used to create the objective function. The multi-objective optimization can be converted to single-objective optimization, which is subject to angle of attack and rate of climb. Moreover, the simulation model of the steam catapult system was built by creating a thermodynamics model of steam-powered catapult, a mathematical model of traction release device, a statics model of tensioning, a statics model of full takeoff power, a mathematical model of catapult force build-up with holdback, a model of release, a dynamics model of power stroke, a dynamics model of free deck run and a dynamics model of fly away. Finally, the optimal combination of the wet steam accumulator was obtained via numerical simulation. The GA method can effectively find the optimal parameters of wet steam accumulator, and its optimized parameters can increase the safety of catapult launch process.
Keywords: steam-powered catapult; wet steam accumulator; multi-parameters optimization; catapult launch; carrier-based aircraft; genetic algorithm steam-powered catapult; wet steam accumulator; multi-parameters optimization; catapult launch; carrier-based aircraft; genetic algorithm
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhu, Q.; Lu, P.; Yang, Z.; Ji, X.; Han, Y. Multi-Parameter Optimization for the Wet Steam Accumulator of a Steam-Powered Catapult. Energies 2019, 12, 234.

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