Three (sorry for the thread invasion Mr Boy
) The Question - Approximately to the nearest 10000, how many crankshaft revolutions does a Top Fuel dragster do in a 4.5 second run from green light to finish line (Only) 20000, 30000, 40000 50000+?
Answer 1800... yes 1800 What's the maths to show that?
Help hints"
Distance and
RPM Top fuel dragsters are the fastest sanctioned category of drag racers, with the fastest competitors reaching speeds of 330 miles per hour (530 km/h) and finishing the 1,000 foot (300 m) runs in 3.7 seconds, or the full quarter mile (402 m) in 4.4 seconds.
Because of the speeds, this class almost exclusively races to only the 1,000 foot (300 m) distance, and not the traditional 1/4 mile (1,320 foot / 402 m). The rule was changed in 2008 by the National Hot Rod Association following the fatal crash of Funny Car driver Scott Kalitta during qualifying at the SuperNationals, held at Old Bridge Township Raceway Park in Englishtown, NJ. The shortening of the distance was used in the FIA at some tracks, and for 2012 is now the standard Top Fuel distance. The Australian National Drag Racing Association is the only internationally recognized sanctioning body that races at 1,320 foot for the majority of races in Top Fuel.
Measuring the power output of a top fuel engine directly is not always feasible. Certain models use a torque sensor incorporated as part of the RacePak data system. Dynamometers that can measure the output of a Top Fuel engine exist; however, the main limitation is that a Top Fuel engine cannot be run at its maximum power output for more than 10 seconds without overheating or possibly destroying itself explosively. The engine power output can also be calculated based upon the car's weight and its performance. The calculated Power output of these engines is most likely somewhere between 8500 and 10,000 horsepower[citation needed] (approximately 6000-7500 kilowatts), which is about twice as powerful as the engines installed on modern Diesel locomotives, and approaches the power output of the largest aviation turboprop engines, with a torque output of approximately 6000 lbf·ft (8135 N·m) and a brake mean effective pressure of 80–100 bar (8.0-10 MPa)
