Acceleration

[L72COPO]

Thought you might find this interesting.

One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower
than the first 4 rows at the Daytona 500.
Under full throttle, a dragster engine consumes 11/2 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 engine cannot produce enough power to drive the
dragster 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 1.7:1 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 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 plug electrodes are totally
consumed during a pass. After 1/2 way, 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 blow
cylinder 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 at
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 have
completed reading this sentence.
Top Fuel Engines turn approximately 540 revolutions from light to light!
Including the burnout the engine must only survive 900 revolutions under
load.
The red-line is actually quite high at 9500 rpm.
The Bottom Line; Assuming all the equipment is paid off, the crew worked
for free, and for once NOTHING BLOWS UP, each run costs an estimated US
$1,000.00 per second. The current Top Fuel dragster elapsed time record
is 4.441 seconds for the quarter mile (10/05/03, Tony Schumacher). The
top speed record is 333.00 mph (533 km/h) as measured over the last 66'
of the run (09/28/03 Doug Kalitta).

Putting all of this into perspective:
You are 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 past the dragster at an honest 200
mph. 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 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, but nearly blasted you off the road when he
passed you within a mere 1320 foot long race course.

That, folks, is acceleration.

Simply incredible....

[Jeff Murphy]

Who do you think won this one?

[Jeff Murphy]

The above photo was staged in about 1980, but apparently the following happened in the early 1990s:

[ QUOTE ]
About 10yrs ago, there was a competition between a F18 Hornet being launched off the catapult and Don Garlit's Top Fuel Dragster. The F18 was launched from a catapult at Lakehurst Naval Air station, and Garlits ran his dragster from the concrete pad next to the catapult. The distance from the start of the catapult to what would be the end of the flight deck was used for a start/stop point. The F18 beat Garlits by less than 1/10th of a second due to the dragster being unable to get traction. The next day, Garlits ran the dragster at Englishtown, and beat the F18's time easily.

[/ QUOTE ]

[img]/ubbthreads/images/graemlins/[/img]

[copo9566aa]

Top Fuel [img]/ubbthreads/images/graemlins/worship.gif[/img] [img]/ubbthreads/images/graemlins/worship.gif[/img] [img]/ubbthreads/images/graemlins/worship.gif[/img]Don Garlits [img]/ubbthreads/images/graemlins/worship.gif[/img] [img]/ubbthreads/images/graemlins/worship.gif[/img] [img]/ubbthreads/images/graemlins/worship.gif[/img]
I'm speakin with Don at Sanair [img]/ubbthreads/images/graemlins/cool.gif[/img]the last year [img]/ubbthreads/images/graemlins/frown.gif[/img] of the Grand National [img]/ubbthreads/images/graemlins/beers.gif[/img] Molson

[Belair62]

[ QUOTE ]
A stock Dodge Hemi V8 engine cannot produce enough power to drive the
dragster supercharger.

[/ QUOTE ] [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/eek.gif[/img]