An Investigation of parasite drag due to transonic junction flow and the low-drag design method.

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18315
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Aerospace engineering
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: Yuhara Tatsunori 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 研究開発員 (90769895)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 遷音速 / 空力設計 / 航空機設計

Outline of Final Research Achievements

This study investigates parasite drag due to junction flow occurring at the intersection of main wing and winglet and a design method to reduce the parasite drag. Cant angle and curved surface have higher sensitivity to profile drag at the intersection. Further investigation revealed that the reduction of thrust loop of section pressure distribution is an important factor. An inversed design method was applied to the intersection shape to increase the thrust loop.

Free Research Field

空力設計