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Parameter design of helicopter with optimum speed rotor based on uncertainty optimization
Received date: 2015-07-20
Revised date: 2015-10-19
Online published: 2015-10-22
Supported by
the Fundamental Research Funds for the Central Universities; Funding of Jiangsu Innovation Program for Graduate Education (CXLX13_164)
In order to improve the quality of design schemes of helicopter with optimum speed rotor, this paper studies the design method of helicopter with optimum speed rotor, based on uncertainty multidisciplinary design optimization. First of all, the uncertainty factors of helicopter parameters are analyzed and modeled from optimal rotor speed, processing error and material deterioration, and it shows that the optimal rotor speed is the main uncertainty factor in the design of helicopter with optimum speed rotor. And then under the collaborative optimization framework, the models of helicopter flight performance, helicopter weight, flight stability, and the performance of turboshaft engine with variable rotor speed are established. Finally, the design of helicopter with optimum speed rotor based on uncertainty multidisciplinary optimization is investigated, which is based on two subsystem design tasks, i.e., hovering performance and flight stability, and one system level design task about helicopter endurance. Optimization results show that the second scheme for the helicopter with the optimum speed rotor is the best one; its probability of satisfying the constraints of required power being less than 350 kW in hover and index of flight stability being less than 0.8, is not less than 95.46%, and expectation of endurance is also bigger.
XU Ming , LI Jianbo , PENG Minghua , LIU Cheng . Parameter design of helicopter with optimum speed rotor based on uncertainty optimization[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(7) : 2170 -2179 . DOI: 10.7527/S1000-6893.2015.0285
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