進水速度及び加速度の測定
1953 年 1953 巻 93 号 p. 83-89
詳細
1953 年 1953 巻 93 号 p. 83-89
The authors tried to construct the instruments to measure the launching speed and acceleration accurately and directly. In this instruments the speed is obtained by transforming the frequency of A.C. voltage which is proportional to the speed of rotating drum into the electric current by vacuum tubes and condenser. The acceleration is obtained by differentiating the voltage proportional to the frequency by means of CR differential circuits. Each is recorded in the self-recording milli-ammeter.
We used them for the launching of three ships and assured that the results were almost successful.
