Longgone
John/68 Barracuda & Dart
Check out these fun facts about top fuel dragsters......... interesting stuff. Subject: Fwd: A lesson in physics and dragsters
Acceleration Lesson
The Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500.
Under full throttle the dragster engine consumes 1 1/2 gallons of nitro methane per second: a fully loaded 747 consumes jet fuel at the same rate, with 25% less energy being produced.
A stock Dodge Hemi V8 cannot produce enough power to drive the dragster's supercharger. With 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into a near solid form before ignition. Cylinders run on the verge of hydraulic lock at full throttle.
At the stoichiometric (stoichiometry: methodology and technology by which quantities of reactants and products in chemical reactions are determined) 17:1 air/fuel mixture for nitro methane, the flame front temperature measures 7050 degrees F.
Nitro methane burns yellow. The spectacular white flame seen above the stacks at night is raw, burning hydrogen, dissociated from the atmospheric water vapor by the searing exhaust gases.
Dual magnetos supply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.
Spark plugs electrodes are totally consumed during a pass. After halfway the engine is dieseling from compression, plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting the fuel flow.
If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to plow the cylinders heads off the block in pieces or split the block in half.
In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an average of over 4G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8G's.
Dragsters reach over 300 miles per hour before you've completed reading this sentence.
Top Fuel Engines turn approximately 540 revolutions from light to light.
Including burnout, the engine must survive only 900 revolutions under load. The redline is actually quite high at 9500 rpm.
The Bottom Line: Assuming all the equipment is paid for, the crew worked for free, and for once, NOTHING BLOWS UP, each run costs an estimated $1,000.00 per second.
The currant Top Fuel dragster elapsed time is 4.441 seconds for the quarter mile (10/5/03, Tony Shumacher). The top-speed record is 333.00 mph, (533 kn/h) as measured over the last 66' of the run (Doug Kalitta).
Putting all of this into perspective:
You're Driving the average $140,000 Lingenfelter "twin turbo" powered Corvette Z06. Over a mile up the road, a Top Fuel Dragster is staged and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start. You run the Vette hard up through the gears and blast across the starting line and pass the dragster at an honest 200mph. The tree goes green for both of you at that moment.
The dragster launches and starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums and within 3 seconds, the dragster catches and passes you. He beats you to the finish line, a quarter of a mile away from where you just passed him. Think about it; from a standing start, the dragster had spotted you 200 mph and not only caught you, but nearly blasted you off the road when he passed you within a mere 1320 foot-long racecourse!!
THAT FOLKS IS...ACCELERATION!!!
Acceleration Lesson
The Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500.
Under full throttle the dragster engine consumes 1 1/2 gallons of nitro methane per second: a fully loaded 747 consumes jet fuel at the same rate, with 25% less energy being produced.
A stock Dodge Hemi V8 cannot produce enough power to drive the dragster's supercharger. With 3000 CFM of air being rammed in by the supercharger on overdrive, the fuel mixture is compressed into a near solid form before ignition. Cylinders run on the verge of hydraulic lock at full throttle.
At the stoichiometric (stoichiometry: methodology and technology by which quantities of reactants and products in chemical reactions are determined) 17:1 air/fuel mixture for nitro methane, the flame front temperature measures 7050 degrees F.
Nitro methane burns yellow. The spectacular white flame seen above the stacks at night is raw, burning hydrogen, dissociated from the atmospheric water vapor by the searing exhaust gases.
Dual magnetos supply 44 amps to each spark plug. This is the output of an arc welder in each cylinder.
Spark plugs electrodes are totally consumed during a pass. After halfway the engine is dieseling from compression, plus the glow of exhaust valves at 1400 degrees F. The engine can only be shut down by cutting the fuel flow.
If spark momentarily fails early in the run, unburned nitro builds up in the affected cylinders and then explodes with sufficient force to plow the cylinders heads off the block in pieces or split the block in half.
In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an average of over 4G's. In order to reach 200 mph well before half-track, the launch acceleration approaches 8G's.
Dragsters reach over 300 miles per hour before you've completed reading this sentence.
Top Fuel Engines turn approximately 540 revolutions from light to light.
Including burnout, the engine must survive only 900 revolutions under load. The redline is actually quite high at 9500 rpm.
The Bottom Line: Assuming all the equipment is paid for, the crew worked for free, and for once, NOTHING BLOWS UP, each run costs an estimated $1,000.00 per second.
The currant Top Fuel dragster elapsed time is 4.441 seconds for the quarter mile (10/5/03, Tony Shumacher). The top-speed record is 333.00 mph, (533 kn/h) as measured over the last 66' of the run (Doug Kalitta).
Putting all of this into perspective:
You're Driving the average $140,000 Lingenfelter "twin turbo" powered Corvette Z06. Over a mile up the road, a Top Fuel Dragster is staged and ready to launch down a quarter mile strip as you pass. You have the advantage of a flying start. You run the Vette hard up through the gears and blast across the starting line and pass the dragster at an honest 200mph. The tree goes green for both of you at that moment.
The dragster launches and starts after you. You keep your foot down hard, but you hear an incredibly brutal whine that sears your eardrums and within 3 seconds, the dragster catches and passes you. He beats you to the finish line, a quarter of a mile away from where you just passed him. Think about it; from a standing start, the dragster had spotted you 200 mph and not only caught you, but nearly blasted you off the road when he passed you within a mere 1320 foot-long racecourse!!
THAT FOLKS IS...ACCELERATION!!!
