@article{oai:jaxa.repo.nii.ac.jp:00035518,
 author = {浅沼, 強 and 谷田, 好通 and 斎藤, 芳郎 and ASANUMA, Tsuyoshi and TANIDA, Yoshimichi and SAITO, Yoshiro},
 issue = {7},
 journal = {東京大学航空研究所集報},
 month = {Sep},
 note = {軸流機械の翼の破損は,従来流体的な強制振動や翼の自励振動などによる疲労が原因と考えられる場合が多い.前者の原因の一つとして施回失速が数えられるが,なかでも振動破損の大半の主因と考えられるlarge stallについては,そのstall cellの大きさや,旋回速度は勿論のこと,cell内部の状態などの詳細なことについては,ほとんど知られていない.そこで旋回失速を直接観測する目的から,それに便利な流体として,水を用いる回転翼列試験機を設計し製作した.また翼列破損には翼の自励振動がもう一つの要因であると考えられているので,翼に働く空力的減衰力を測定する必要がある.従来翼列翼のフラッタ,とくに失速フラッタについては,ほとんど解明されていない.よって,とりあえず曲げ振動を対象とし,振動翼列中の翼に作用する空力的減衰力を測定すべく,測定精度の関係からやはり水を使用する振動直線翼列試験機を設計製作した.さらにこれら両試験機のための,共通な一連の回流水路を設備したところ,いずれも漸く完成し,しかもほぼ所期の目的通り作動することが確認された.よって,ここには,作動流体として水を選んた理由および,回流水路の概略,さらに,試作した水回転翼列ならびに水振動直線翼列の両試験機の詳細について述べてある., A number of fatigue failures of blades in an axial-flow fluid machine are considered to be largely due to an aerodynamically forced or self-excited vibration of cascade blades. The forced vibration is found to be caused frequently by the so-called rotating-stall occuring with a large cell in an annulus-cascade, which is not yet fully investigated in its detail natures, such as size dimensions, propagating velocity and internal aspect of stall cell and so on. In order to observe directly the rotating-stall itself, therefore the authors designed and made a vertical rotary-cascade testing machine, simulating a typical axial-flow air compressor and using water as a working fluid to visualize stream lines in cascades. On the other hand, many damages of blades may also be attributed to the self-excited vibration, often termed a cascade flutter, which is governed mainly by the aero-dynamic damping force acting on vibrating blade of cascade. With the aim of determining the damping force in the case of bending vibration, they designed and then constructed an oscillating linear-cascade testing machine, in which several blades can be oscillated transversely by the external driving mechanism in water flow, because the fluid damping force can be measured in water more accurately than in air. In addition, to operate these testing machines, they prepared a water tunnel system which consists of a water pump having head of about 10m Aq and flow rate of 270l/s, a water pond, a head- and a surge-tanks, two flow-meters and pipe line of 10 in. in diameter. Now, these experimental facilities of water tunnel are ready and verified to operate nearly well as expected. The paper will present some reasons of preferring water as a working medium, the outline of the water tunnel system and the constructions and the functions of newly-designed testing machines, i. e. the rotating annulus-cascade and the oscillating linear-cascade ones., 資料番号: SA4148581000},
 pages = {649--675},
 title = {新設回流水路関係の実験設備について},
 volume = {3},
 year = {1963}
}