DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
ON SHIPS WITH ZERO WAVE RESISTANCE
HYDRONAUTICS INC LAUREL MD
Takahei 1960 studied the waveless bow and Kumano 1960 investigated the waveless stern. They tried to match the amplitude function of a doublet, which is a function of the doublet strength and the Froude number, as close as possible with the amplitude function of a ship. However, it was not clear whether there even existed a doublet distribution whose amplitude is exactly the same as that of the ship. It is shown in this report that such a doublet distribution can indeed be found but that it extends along a line from the free surface to infinite depth. However, this need not be a serious restriction since it will be shown that the effect of discarding that part of the doublet distribution extending from some finite depth to infinity can be made very small. With such a doublet distribution at the bow and stern the waves from the bow and stern of the given symmetric ship may be completely canceled and the ideal fluid wave resistance of the ship becomes zero. Author