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A pump-jet, hydrojet, or water jet is a marine system that produces a jet of water for propulsion. The mechanical arrangement may be a ducted propeller ( axial-flow pump ), a centrifugal pump , or a mixed flow pump which is a combination of both centrifugal and axial designs.
steam powered water-jet propulsion James Rumsey (1743 – December 21, 1792) was an American mechanical engineer chiefly known for exhibiting a boat propelled by machinery in 1787 on the Potomac River at Shepherdstown in present-day West Virginia before a crowd of local notables, including Horatio Gates .
The Kamewa waterjets are still traded by Kongsberg Maritime under that name and are offered in five product lines in two product series.. Previous products from Kamewa has been the A-series, a mix flow pump in aluminum, the SII and P62 pumps in stainless steel and the Kamewa Advanced Propulsion Systems (APS) Waterjet developed specifically for the Volvo Penta diesel engine.
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.
The Voith Schneider propeller was originally a design for a hydro-electric turbine. [2] Its Austrian inventor, Ernst Schneider, had a chance meeting on a train with a manager at Voith's subsidiary St. Pölten works; this led to the turbine being investigated by Voith's engineers, who discovered that although it was no more efficient than other water turbines, Schneider's design worked well as ...
Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats , most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller , or less frequently, in pump-jets , an ...
Lonnie George Johnson (born October 6, 1949) is an American inventor, aerospace engineer, and entrepreneur, best known for inventing the bestselling Super Soaker water gun in 1989. He was formerly employed at the U.S. Air Force and NASA, where he worked at the Jet Propulsion Laboratory. [2]
Marquardt made significant advances in many fields, including space propulsion, medicine, optics, life in space, panoramic photography (the VueMarq System), transportation, hypersonic flight, high-temperature metallurgy, water desalination, slurry fuels, underwater propulsion, ram air turbines, afterburners and thrust-reversers for jet aircraft ...