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A jetboat is a boat propelled by a jet of water ejected from the back of the craft. Unlike a powerboat or motorboat that uses an external propeller in the water below or behind the boat, a jetboat draws the water from under the boat through an intake and into a pump-jet inside the boat, before expelling it through a nozzle at the stern.
Sir Charles William Feilden Hamilton OBE (26 July 1899 – 30 March 1978) was a New Zealand engineer who developed the modern jetboat, and founded the water jet manufacturing company, CWF Hamilton Ltd. Hamilton never claimed to have invented the jet boat. He once said "I do not claim to have invented marine jet propulsion.
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On May 13, 1946, Jon Gnagy was the first "act" on the first television program broadcast from the new WNBT channel 4 antenna atop the Empire State Building. Gnagy pioneered drawing on television in the United States from the early 1950s throughout the 1960s on his program, Learn to Draw, and his popular art kits are still available.
Jet engines have propelled high speed cars, particularly drag racers, with the all-time record held by a rocket car. A turbofan powered car, ThrustSSC, currently holds the land speed record. Jet engine designs are frequently modified for non-aircraft applications, as industrial gas turbines or marine powerplants. These are used in electrical ...
A swan neck duct is a jet engine component, usually situated within the compression or turbine expansion system. [1] Many jet engines have a short annular passageway, linking two components, where there is a large change in mean radius, from front to rear. The shape of the resulting passageway is often similar to that of a swan or goose neck.
The NAF would build one prototype and a private contractor would then build a second Giant Boat for cost comparison. [4] The first prototype was assigned serial number A6059 . [ 5 ] [ 6 ] Work on the hull and wings commenced and the Gallaudet Aircraft Company was contracted to provide the engine nacelles .
Depictions of swans (genus Cygnus) in art. The swans' closest relatives include the geese and ducks . Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini .