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Shaft horsepower (shp) is the power delivered to a propeller shaft, a turbine shaft, or to an output shaft of an automotive transmission. [32] Shaft horsepower is a common rating for turboshaft and turboprop engines, industrial turbines, and some marine applications. Equivalent shaft horsepower (eshp) is sometimes used to rate turboprop engines ...
The term "horse power" probably predates the name of the horsepower unit of measurement. [Notes 1] The word "power" in late-19th-century American English, for example, was often used for any example in the whole category of power sources, including water powers, wind powers, horse powers (for example, sweep powers), dog powers, and even (in a few cases) sheep powers; in the Pennsylvania Oil ...
Internal combustion engines date back to between the 10th and 13th centuries, when the first rocket engines were invented in China. Following the first commercial steam engine (a type of external combustion engine) by Thomas Savery in 1698, various efforts were made during the 18th century to develop equivalent internal combustion engines.
At the height of the horsepower era, Pontiac engines reached ratings of 390 hp (291 kW; 395 PS) (SAE gross), though other engines achieved considerably higher outputs. Federal emissions laws eventually brought the horsepower era to a close and resulted in a steady decline for Pontiac's engines. One holdout to this industry-wide slide was the ...
Its wrist and hock joints were low to the ground. The forelimbs had developed five toes, of which four were equipped with small proto-hooves; the large fifth "toe-thumb" was off the ground. The hind limbs had small hooves on three out of the five toes, whereas the vestigial first and fifth toes did not touch the ground. Its feet were padded ...
The most plentiful engines of the time were Ford Model T, Model A, and Model B engines. The Model A engine, available cheaply, [75] [76] and fairly light while providing 40 horsepower [13] [75] – and designed for operation at low-RPM speeds ideal for propellers [13] – proved adaptable to some single-seat or two-seat aircraft.
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(Hunterian Museum, Glasgow, by Francis Chantrey) James Watt FRS, FRSE (/ w ɒ t /; 30 January 1736 (19 January 1736 OS) – 25 August 1819) [a] was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1776, which was fundamental to the changes brought by the Industrial Revolution in both his native ...