翼身融合布局民机非圆截面机身结构设计研究综述

doi:10.7527/S1000-6893.2019.23054

Abstract

Abstract: With the advantages of higher lift to drag ratio, reduced drag, and lower community noise, blended-wing-body (BWB) civil aircraft is one of the most potential aircraft developing directions. But many challenges on BWB structure design are brought out as a result of applying non-circular cross-section special layout pressured airframe. Multi-bubble fuselage, double skin multi-bubble fuselage, multi-box fuselage with stiffened structure, and multi box fuselage on the basis of the Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) are put forward for BWB central body design. The realizable structure design scheme with high loading efficiency is the PRSEUS-based box central body structure that is jointly designed by NASA and Boeing. PRSEUS takes full advantages of the integrated composite material stitching, co-cured technologies at low cost to obtain outstanding mechanical characteristic with tensile/compression resistance, damage arresting, large stiffness and stability redundancy, high loading efficiency, and strong metal repairing, having been developed in wing and other structure design of BWB civil aircraft. Using the non-circular cross-section fuselage structure design as a key point, this paper introduces the structure design history of BWB civil aircraft. Moreover, current techniques and development trends are explained from central body structure, central body critical parts, and full-aircraft optimization design. Then, based on the related technology research development aboard, future domestic development of BWB civil aircraft fuselage structure design is presented.

Key words: blended-wing-body, civil aircraft structure design, multi-bubble fuselage, multi-box fuselage, pultruded rod stitched efficient unitized structure, central body structure

CLC Number:

ZHANG Yongjie, WU Yingying, ZHAO Shuwang, SI Jiangtao, YUAN Changsheng. Review of non-circular cross-section fuselage structure design research on blended-wing-body civil aircraft[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(9): 623054-623054.

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Review of non-circular cross-section fuselage structure design research on blended-wing-body civil aircraft

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