Hi colleagues
My name is Vlad, I live in Russia. I want to share with you a new type of water-jet unit that we have developed and produce already commercially (Minusinsk, Siberia) for our high-speed boats. Water jet blok is designed for the conditions of mountain rivers c their rocky (gravel). Classic rectifying device (blade on the hub in a circle) in the nozzle is not available, they are replaced by profiling a cross blades with compressed at the nozzle outlet slotted type. Blok and details made from stainless steel diameter 200, 220.240 mm for motors of different power. Tests have shown greater "survivability" of this type of compression of the jet nozzle. Gravel got in a jet pack (no grill) on a shallow sandbank just "fly" the "pipe" with no impact on the impeller and nozzle .KPD (effectiveness) in this type of nozzle 7% less than the classic version, but this is easily offset by the "survivability" jet blok in a complex, long voyage. Tests were conducted with the engines: 7A Toyota, 3S-FE, 1JZ-GE, 2JZ-GE in boats of different lengths. Measuring speed using GPS ranged from 53 to 80 km / h
In general, we are very pleased with the result!
PS Sorry for my english ..
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