Table of Contents
What is the benefit of the shape of the submarine?
It reduces hydrodynamic drag when the sub is submerged, but decreases the sea-keeping capabilities and increases drag while surfaced. Since the limitations of the propulsion systems of early submarines forced them to operate surfaced most of the time, their hull designs were a compromise.
Why are submarines shaped like that?
At the front of the sub, the metal is shaped into a point so that the sub can slide through the water more easily. But what they do is they build an extra wall inside of the pointed wall that’s shaped like a hemisphere. Then they set it up so that the water can get in between the two walls.
What is the tail of a submarine called?
In naval parlance, the sail (American usage) or fin (European/Commonwealth usage) (also known as a fairwater) of a submarine is the tower-like structure found on the dorsal (topside) surface of submarines.
What is a Fairwater on a submarine?
Diving planes located on the sail (conning tower) are called fairwater planes on US Navy submarines. Fairwater planes do not pitch the ship up or down; they cause the ship to rise or sink on a level plane as they are operated.
What is the best shape for a submarine?
The most ideal shape of a submarine hull for minimum drag is the ideal streamlined shape with a parabolic bow and an elliptical stern, as shown in Figure 10.
What is the telescope on a submarine called?
periscope, optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or submerged.
How does a pump jet work on a submarine?
A pump-jet works by having an intake (usually at the bottom of the hull) that allows water to pass underneath the vessel into the engines. Water enters the pump through this inlet. The water pressure inside the inlet is increased by the pump and forced backwards through a nozzle.