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For example, a piston in an automobile engine which has a stroke of 90 mm will have a mean speed at 3000 rpm of 2 * (90 / 1000) * 3000 / 60 = 9 m/s. The 5.2-liter V10 that debuted in the 2009 Audi R8 has the highest mean piston speed for any production car (26.9 m/s) thanks to its 92.8 mm stroke and 8700-rpm redline. [1]
Jetsprint or sprint boat racing [1] is a form of motorboat racing in which jetboats, with a crew of two, race individually against the clock through a twisting series of channels in less than a metre of water.
The 30 footer has a range of 130 nmi (240 km), and most standard operating procedures dictate that the boat not go more than 20 nautical miles (37 km) offshore without a waiver granted from higher level commands. The fuel capacity is 78 gallons at 100%, and the vessel is generally operated with a crew of two, a surfman and an engineer.
Hull speed can be calculated by the following formula: where is the length of the waterline in feet, and is the hull speed of the vessel in knots. If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½.
The bow of the capsized vessel should be pointed towards the wind so that when the sail starts to lift out of the water the wind can catch underneath the sail and help right the boat. Care is taken not to let the boat swing all the way over and capsize on the other side, frequently with the crew on the bottom.
Live updates: Will there be a government shutdown?Latest from Congress. Is mail service or the post office impacted by a government shutdown? The U.S. Postal Service would be unaffected because it ...
In the case of "neutral" or shifting up too late, a rev limiter can easily keep engine RPM below the redline. If a manual transmission is shifted down too early, the speed of the vehicle will drive the engine over the redline. In this case, a rev limiter will cut engine power but it cannot prevent the engine's RPM from going beyond the redline.
Americans paid an estimated $842 million in fees to cover advance loan refunds or refund anticipation checks last year.