中短程客机总体参数敏感性分析

doi:10.7527/S1000-6893.2013.0140

Abstract

Abstract:

The determination of primary parameters in preliminary design is usually based on the sensitivity analysis of these parameters. This paper investigates the parameter sensitivity analysis for the preliminary design of a short/medium-haul airliner. A synthesis program for the preliminary design of civil jets is developed for use by the optimization and sensitivity analysis. The values of the primary parameters of the baseline design are found by optimization method. Based on the baseline design, the sensitivity analysis of primary parameters is investigated in detail, which includes the effects of wing areas on takeoff mass, fuel mass and direct operating costs (DOC), effects of multiple parameters (wing areas and aspect ratios, wing areas and sweep) on takeoff mass and fuel mass, effects of thrust of engines and winglet on the takeoff-landing performance and designed fuel mass, effects of wing area and flap types on the takeoff-landing performance, effects of fuselage stretch on the takeoff-landing performance and designed fuel mass. The results of the sensitivity analysis are presented in trend plots and carpet plots, from which the effects of primary parameters on the performances can be perceived directly. These results can guide designers to find more reasonable designs and make a final decision on the values of the primary parameters in preliminary design.

Key words: aircraft design, civil jet, sensitivity analysis, design evaluation, optimization

CLC Number:

V221

ZHANG Shuai, YU Xiongqing. Sensitivity Analysis of Primary Parameters in Preliminary Design of a Short/Medium-haul Airliner[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, doi: 10.7527/S1000-6893.2013.0140.

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Sensitivity Analysis of Primary Parameters in Preliminary Design of a Short/Medium-haul Airliner

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