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The highest speed officially recorded for any human-powered vehicle (HPV) on level ground and with calm winds and without external aids (such as motor pacing and wind-blocks, but including a defined amount of gravity assist) is 144.18 km/h (89.59 mph) set in 2016 by Todd Reichert in the Eta Speedbike, a streamlined recumbent bicycle. [12]
Vikingskipet (250 meters indoor wood sea-level), Hamar, Norway 51.596: Graeme Obree-style "praying mantis" handlebar, round steel tubing frame, carbon tri-spoke wheels. 23 July 1993: Chris Boardman: 24: Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France: 52.270: Triathlon handlebar, carbon airfoil tubing frame, carbon 4-spoke ...
Detonation velocity is the speed with which the detonation shock wave travels through the explosive. It is a key, directly measurable indicator of explosive performance, but depends on density which must always be specified, and may be too low if the test charge diameter is not large enough.
Metre per hour (American spelling: meter per hour) is a metric unit of both speed and velocity (Vector (geometry)). Its symbol is m/h or m·h −1 (not to be confused with the imperial unit symbol mph). By definition, an object travelling at a speed of 1 m/h for an hour would move 1 metre.
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.
Transonic (or transsonic) flow is air flowing around an object at a speed that generates regions of both subsonic and supersonic airflow around that object. [1] The exact range of speeds depends on the object's critical Mach number, but transonic flow is seen at flight speeds close to the speed of sound (343 m/s at sea level), typically between Mach 0.8 and 1.2.
Masters athletics is a class of the sport of athletics for athletes of over 35 years of age. The events include track and field, road running and cross country running.These are the current world records in various five-year-groups, maintained by WMA, the World Association of Masters Athletes, which is designated by the World Athletics (formerly IAAF) to conduct the worldwide sport of Masters ...
All GPS receivers capable of functioning above 60,000 ft (18 km) above sea level and 1,000 kn (500 m/s; 2,000 km/h; 1,000 mph), or designed or modified for use with unmanned missiles and aircraft, are classified as munitions (weapons)—which means they require State Department export licenses. [133]