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The trudgen is a swimming stroke sometimes known as the racing stroke, or the East Indian stroke. It is named after the English swimmer John Trudgen (1852–1902) [1] and evolved out of sidestroke. [2] One swims mostly upon one side, making an overhand movement, lifting the arms alternately out of the water.
The term apoplectic stroke is an archaic, nonspecific term, for a cerebrovascular accident accompanied by haemorrhage or haemorrhagic stroke. [252] Martin Luther was described as having an apoplectic stroke that deprived him of his speech shortly before his death in 1546.
An engine is described as undersquare or long-stroke if its cylinders have a smaller bore (width, diameter) than its stroke (length of piston travel) - giving a ratio value of less than 1:1. At a given engine speed, a longer stroke increases engine friction and increases stress on the crankshaft due to the higher peak piston acceleration.
The induction stroke is the first phase in a four-stroke (e.g. Otto cycle or Diesel cycle) engine.It involves the downward movement of the piston, creating a partial vacuum that draws an air-fuel mixture (or air alone, in the case of a direct injection engine) into the combustion chamber.
The comparison of mean piston speed (black line) with real piston speed (color lines). Diagram shows one stroke from BDC to TDC. Revolution = 1.000 min-1, stroke = 88 mm. The connecting rod ratio l/r varies: 3 - red, 4 - green, 5,5 - blue. The mean piston speed is the average speed of the piston in a reciprocating engine. It is a function of ...
The reciprocating motion of a non-offset piston connected to a rotating crank through a connecting rod (as would be found in internal combustion engines) can be expressed by equations of motion.
Sea lion stroke: based on the swimming style of sea lions, [4] this swimming stroke is primarily performed with sculling, arms at the side along the bodyline and strongly supported with flutter kicks in a contralateral sequence. It is very effective when swimming through narrow underwater places.
The term 'freestyle stroke' is sometimes used as a synonym for 'front crawl', [3] as front crawl is the fastest surface swimming stroke. [4] It is now the most common stroke used in freestyle competitions. [5] The first Olympics held open water swimming events, but after a few Olympics, closed water swimming was introduced.