Tohoku University Graduate School of Engineering
Tohoku University Graduate School of Engineering
Tohoku University Graduate School of Engineering
Tohoku University Graduate School of Engineering
出版者
宇宙航空研究開発機構
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2005論文集
雑誌名(英)
JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2005
巻
JAXA-SP-05-017
ページ
132 - 137
発行年
2006-02-28
抄録（英）
In supersonic flight, airplanes cause strong sonic booms and wave drags resulted from shock waves. Kusunose has proposed a new concept for supersonic transport, whose sonic booms and wave drag can be significantly reduced, using a Busemann's Biplane concept. Motivated by the concept, aerodynamic design of biplane configuration in supersonic flight is discussed based on Computational Fluid Dynamics (CFD). In order to focus on the shock wave characteristics around biplane configuration, inviscid flow (Euler) analyses are performed which is particularly suitable for wave drag analyses. The purpose of this paper is to demonstrate new biplane configurations based on Busemann's Biplane. The aerodynamic design is performed using an iterative inverse design method that has been recently implemented. First, we analyzed a characteristic of Busemann's Biplane as a baseline model. At the result of analyses on CFD, we confirmed much reduction of wave drag compared to Diamond Airfoil which had the same volume of the baseline model, Busemann's Biplane. Next, we tried to design biplane configurations by using the inverse design method. This is the method that geometries are determined by given target pressure distributions. We expect that the inverse design method may prove to be a highly appropriate tool in finding a biplane configuration to achieve minimum wave drag under a given lift condition. Finally by the use of the inverse design method an improved airfoil shape for the biplane has been obtained.
衝撃波の干渉を利用した低ブーム・低抵抗超音速機の空力設計
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