JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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Other TitleNumerical investigation of supersonic transport high-lift devices
Author(jpn)Lei, Zhong
Author(eng)Lei, Zhong
Author Affiliation(jpn)宇宙航空研究開発機構 航空プログラムグループ 超音速機チーム
Author Affiliation(eng)Japan Aerospace Exploration Agency Supersonic Transport Team, Aviation Program Group
Issue Date2008-02-29
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication date2008-02-29
AbstractFlow field around a configuration of supersonic transport with high-lift devices at low speed and high angle of attack was investigated by solving Reynolds-averaged Navier-Stokes equations. The configuration was consisted of a fuselage and a cranked arrow wing, with leading-edge and trailing-edge flaps. Numerical simulations were conducted and validated at conditions of the wind-tunnel test. Details of flow field at the design condition were analyzed using computational results. Effect of the high-lift devices on aerodynamic performance was discussed. The leading-edge vortices were reduced both in size and in strength by deflecting the leading-edge flap and the drag was reduced. A typical leading-edge vortex flap was confirmed. The trailing-edge flap increased the effective camber of the wing and improved the lift force. Furthermore, it was shown that the aerodynamic performance was improved by combination of the leading-edge and trailing-edge flaps.
本研究では、低速と高迎角における超音速機形態のまわりの流れ場に関してCFD(Computational Fluid Dynamics)解析を行い、風洞試験と比較し、CFD解析精度を検証した。数種類の高揚力形態の解析により、流れの詳細を調査し、翼前・後縁高揚力装置の有効性を考察した。前縁フラップが、剥離を抑制しボルテックス・フラップとして機能することによって、抵抗を低減する効果を確認した。また、後縁フラップが、キャンバー効果により揚力を増加させ、揚抗比を向上させる効果を確認した。前後縁フラップを組み合わせた複合効果のメカニズムを考察し、前縁付近の吹き上げと後縁付近の吹き下ろしが増加することによって機体の空力性能がさらに改善されることが分かった。最後に、高揚力装置設計について展望を述べる。
DescriptionJAXA Research and Development Report
Keywordssupersonic transport; numerical analysis; high-lift device; angle of attack; cranked arrow wing; computational fluid dynamics; flap; flow distribution; aerodynamic characteristic; vortex; wind tunnel test; lift drag ratio; 超音速輸送機; 数値解析; 高揚力装置; 迎角; クランクトアロー翼; 計算流体力学; フラップ; 流れの分布; 空力特性; 渦; 風洞試験; 揚抗比
Document TypeTechnical Report
JAXA Category研究開発報告
Report NoJAXA-RR-07-050

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