A Study on Change of Rudder's Performance by Different Cross Sections

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  • 形状変更による舵力特性の変化
  • 形状変更による舵力特性の変化〔含 質疑応答〕
  • ケイジョウ ヘンコウ ニ ヨル カジリョク トクセイ ノ ヘンカ ガン シツギ オウトウ

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This paper presents two types of rudder, the rudder with flat after body cross section (the flat rudder) and the rudder with flap (the flap rudder). Their two-dimensional cross section pressures were calculated to estimate the rudder's performance. The model tests were carried out in the circulating water channel. The results are as follows. (1) The flap rudder shows the higher maximum lift coefficient than that of the shilling rudder. (2) Re-suction pressure on a cross section pressure distribution of rudder would improve a stall characteristics.

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