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In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch. Reversible propellers—those where the pitch can be set to negative values—can also create reverse thrust for braking or going backwards without the need to change the direction of shaft revolution.
The blade is made of non-rustproof carbon steel, blue-plastered by hand and finely forged from the base to the tip of the knife. The 90 mm (3.5 in) long blade shows patina (dark spots) caused by decades of use. It can easily be sharpened to a shaving sharp edge. Carbon steel is a popular choice for rough-use knives and cheaper options.
In this theory, a small element (dr) is taken at a distance r from the root of the blade and all the forces acting on the element are analysed to get a solution. It is assumed that the flow through each section of small radial thickness dr is assumed to be independent of the flow through other elements.
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Hoda Kotb is having a very teary Christmas.. The TV personality became visibly emotional as the Today Show presenters exchanged Secret Santa gifts during the program's Christmas Day broadcast ...
Musicians will be amp-ed that these phonies are off the streets. More than 3,000 fake Gibson guitars that could have been sold for a combined $18.7 million were seized by federal authorities after ...
Longtime USC and Los Angeles Rams head coach John Robinson died on Monday, both the university and franchise confirmed. Robinson died in Baton Rouge, Louisiana, due to complications from pneumonia.