Multipoint optimization on fuel efficiency in conceptual design of wide-body aircraft

作     者：Xiao CHAI Xiongqing YU Yu WANG 

作者机构：College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics 

基　　金：supported by the Fundamental Research Funds for Central Universities(NUAA NS2016010) 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2018年第31卷第1期

页      码：99-106页

摘      要：Aircraft conceptual design optimizations that maximize the performance at a design condition （single-point） may result in designs with unsatisfying off-design performance. To further improve aircraft efficiency under actual flight operations, there is a need to consider multiple flight conditions （multipoint） in aircraft conceptual design and optimization. A new strategy for multipoint optimizations in aircraft conceptual design is proposed in this paper. A wide-body aircraft is taken as an example for both single-point and multipoint optimizations with the objective of maximizing the specific hourly productivity. Boeing 787-8 flight data was used in the multipoint opti- mization to reflect the true objective function. The results show that the optimal design from the multipoint optimization has a 7.72% total specific hourly productivity increase of entire flight missions compared with that of the baseline aircraft, while the increase in the total specific hourly productivity from the single-point optimal design is only 5.73%. The differences between the results of single-point and multipoint optimizations indicate that there is a good option to further improve aircraft efficiency by considering actual flight conditions in aircraft conceptual design and optimization.

主 题 词：Aircraft conceptual design Fuel efficiency Multiple missions Optimization Wide-body aircraft 

学科分类：08[工学] 082501[082501] 0825[工学-环境科学与工程类] 

核心收录：

D　O　I：10.1016/j.cja.2017.10.006

馆 藏 号：203282164...