軍艦の空氣抵抗測定に關する模型實驗の成果に就て
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概要
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Experiments of air resistance with models of above-water portion of 4 typical warships were carried out in the Wind tunnel of the Naval Research Institute and the following are the formulae deduced. For battle ship, battle cruiser and destroyer : - [numerical formula] For aeroplane carrier : - [numerical formula] in which Ra=air resistance in kg., A=transverse projected area of ship above water line in m^2., V=relative velocity between wind and ship in m./sec. Secondly, in view of obtaining the formula for calculating the air resistance of aeroplane carrier advancing obliquely to the direction of the wind, one model of this type tested in the same tunnel, and from the results of experiment next formula deduced : - [numerical formula] where Ra=air resistance in kg., C'_R=coefficient of air resistance, A=transverse projected area of ship above water line in m^2., B=longitudinal projected area of ship above water line in m^2., θ=direction of relative wind to middle line of ship measured from the bow in degrees. Some remarks on the tendency of variation of the coefficient C'_R in the above formula influenced by other elements, etc. are described ; in addition tables and curves of the result of experiments are appended.
- 社団法人日本船舶海洋工学会の論文
- 1932-04-30
著者
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