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A Mark 46 Mod 5A torpedo is inspected aboard a destroyer in April 2005. Contra-rotating propellers have benefits when providing thrust in marine applications. Contra-rotating propellers are used on torpedoes due to the natural torque compensation and are also used in some motor boats.
A man is in critical condition after he was injured in an accident involving a boat propeller at Eagle Mountain Lake over the weekend, according to officials with Texas Parks and Wildlife.
Replica of a propeller from the USS Monitor. Since the introduction of the marine propeller in the early 19th century, cavitation during operation has been a limiting factor in the efficiency of ships. Cavitation in marine propellers develops when the propeller operates at a high speed and reduces the efficiency of the propeller.
A Pennsylvania man fishing in Key West was killed Sunday after he fell off a boat and was struck by the engine’s propeller, police said. Timothy Adam Christianson, 35, was standing on the stern ...
A circle of death can be initiated if the boat operator releases the steering mechanism while the boat is still powered, which means the propeller is still turning. The force of the rotating propeller blades incurs a force known as steering torque , causing the motor itself, which is mounted on a swivel jointed mechanism, to turn sharply into ...
A Florida sheriff’s deputy owes his life to a group of good Samaritans, who rushed to help when he was thrown into the blades of his boat’s spinning propeller, according to investigators.
An advanced type of propeller used on the American Los Angeles-class submarine as well as the German Type 212 submarine is called a skewback propeller. As in the scimitar blades used on some aircraft, the blade tips of a skewback propeller are swept back against the direction of rotation. In addition, the blades are tilted rearward along the ...
A Florida man is dead after he got caught in a boat propeller during a fishing trip with a friend off the Sunshine State's west coast.. The tragic incident took place at around 11:40 a.m. on ...