Optimization of System Parameters for Liquid Rocket Engines with Gas-Generator Cycles
| Autor: | Jun Chen, Jue Wang, Xiao-yan Tong, Yun-tao Zheng, Guobiao Cai, Jie Fang |
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| Rok vydání: | 2010 |
| Předmět: |
Engineering
Liquid-propellant rocket business.industry Mechanical Engineering Probabilistic-based design optimization Multidisciplinary design optimization Aerospace Engineering Control engineering Thrust-to-weight ratio Automotive engineering Fuel Technology Space and Planetary Science Systems design Rocket engine Specific impulse business Gas generator |
| Zdroj: | Journal of Propulsion and Power. 26:113-119 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/1.40649 |
| Popis: | System design of liquid rocket engines must consider engine performance, weight, cost, and reliability requirements. A general design optimization framework has been developed in this paper to select the best system parameters for liquid rocket engines with gas-generator cycles. The object is to maximize the specific impulse and vacuum thrust-to-weight ratio of the engine with given system requirements and design assumptions by changing thrust-chamber pressure and mixture ratio. The system analysis, along with the engine weight estimation, is based on a modular scheme. Multidisciplinary design optimization formulations including multidisciplinary feasible and collaborative optimization are used, evaluated, and compared during the optimization process. Several techniques of multi-objective processing are also used to identify the Pareto frontier and the optimal compromise solutions. A proposed cryogenic-propellant engine using liquid oxygen and hydrogen with a gas-generator cycle is studied as a specific example. Moreover, uncertainties in the engine operation, such as thrust-chamber pressure and mixture ratio, are taken into account as random variables in the reliability-based optimization. Results are presented to illustrate the tradeoff between the engine performance and reliability requirements. |
| Databáze: | OpenAIRE |
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