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 diesel
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 top fueli kohta küsimused
kunagi jäi vist pärtli jutust meelde, et top fueli dragstereid juhitakse esiratastega õhuvoolu suunates. nüüd aga vaatasin ausside miskit võistlust ja sääl paljudel õige hõredad kodarveljed ees. kuis siis selle juhtimisega nüüd on ka?
teine asi millest ma eriti aru ei saa, on bloweri rihmade vastupidavus. nii umbes igal teisel vennal lendas nõks enne lõppu rihm minema. finaalis võitjal suisa poole maa pealt juba. mis värk selle asjaga on? miks neid ei võiks siis vähe tummisemaid pruukida?
muide sääl vahepeal öeldi üks huvitav võrdlus. nimelt pruugib top fuel samapalju kütust sekundis kui täislastis boeing 747. karm mis? |
| 26.06.2004 at 22:52 |
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madis
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top fueli kohta küsimused
Kui arvutada rihmaga ülekantav võimsus tavaliste rihmavalemite järgi ja vaadata standartrihmasid siis tekib paarikümnekordne vahe  |
| 28.06.2004 at 11:47 |
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partel
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top fueli kohta küsimused
Rihm lendab tavaliselt siis, kui kumm suitsema läheb ja seetõttu lendavad mootoripöörded "punasesse" enne kui juht jõuab gaasi järgi lasta.
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| 28.06.2004 at 16:25 |
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madis
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top fueli kohta küsimused
Kas seepärast et kompressori tootlikus ja tarbitav võimsus kargavad ka lakke ? |
| 28.06.2004 at 18:12 |
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partel
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top fueli kohta küsimused
Mahtkompressor on üsna ebaefektiivne, eriti kõrgetel pööretel.
Rihma koormus lendab lakke ja rihm puruneb.
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| 28.06.2004 at 18:33 |
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Jutulind
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top fueli kohta küsimused
quote:
partel: Mahtkompressor on üsna ebaefektiivne, eriti kõrgetel pööretel.
Rihma koormus lendab lakke ja rihm puruneb.
Kas seal mitte ei teki see probleem et labade otste joonkiirus hakkab ülehelikiirusele lähenema ja nii tekib järsk lisatakistus ... Või olen valesti miskit mõistnud ?
____________________________
Team OUTLAW
'80 Jeep Wagoneer 258 cid R6 4 spd manual
'79 Jeep Wagoneer 360 cid V8 TH400
'06 Fiat Panda 4x4 |
| 28.06.2004 at 19:16 |
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partel
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top fueli kohta küsimused
Nii on.
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| 28.06.2004 at 19:57 |
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diesel
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top fueli kohta küsimused
well, ok, rihmaga targem. a kuis selle juhtimisega siis ... |
| 28.06.2004 at 20:57 |
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crazycookie
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top fueli kohta küsimused
quote:
diesel:
muide sääl vahepeal öeldi üks huvitav võrdlus. nimelt pruugib top fuel samapalju kütust sekundis kui täislastis boeing 747. karm mis?
Internetis ringleb nö faktikogumik:
* 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
nitromethane 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 nitromethane the flame
front temperature measures 7050 degrees F.
* Nitromethane 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 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 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 redline is actually quite high at 9500rpm.
* 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). Kas info on up-to-date?
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.
Hetkeseisuga võetud aadressilt http://www.hardforum.com/showthread.php?t=767507
Eks siin teadjad kommenteerivad, mis tõde, mis vale. |
| 28.06.2004 at 23:58 |
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diesel
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top fueli kohta küsimused
huvitav värk, näiteks see, et mootori eluiga on 900 pööret. |
| 29.06.2004 at 09:06 |
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Jutulind
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top fueli kohta küsimused
quote:
diesel: huvitav värk, näiteks see, et mootori eluiga on 900 pööret.
Jap, täpsemalt küll 900 pööret koormuse all ( st - teeme tehte - ca 9000 redline, mootor peab vastu pidama 10 sek koormuse all ... ).
____________________________
Team OUTLAW
'80 Jeep Wagoneer 258 cid R6 4 spd manual
'79 Jeep Wagoneer 360 cid V8 TH400
'06 Fiat Panda 4x4 |
| 29.06.2004 at 10:42 |
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Bolt
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top fueli kohta küsimused
et siis iga 2 sõidu tagant vahetatakse mootorit? |
| 29.06.2004 at 10:47 |
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Olds
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top fueli kohta küsimused
kui mitte iga sõidu järel...
____________________________
Premium Performance - Ameerika autode varuosad,remont,race osad & custom mootorite ehitus
Tim McAmis ametlik partner
COMP Performance Group brändide ametlik ainumaaletooja baltikumis |
| 29.06.2004 at 10:50 |
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foke
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top fueli kohta küsimused
quote:
Jutulind: quote:
diesel: huvitav värk, näiteks see, et mootori eluiga on 900 pööret.
Jap, täpsemalt küll 900 pööret koormuse all ( st - teeme tehte - ca 9000 redline, mootor peab vastu pidama 10 sek koormuse all ... ).
ma siin ühes teises topicus juba tegin kalkulaatori lahti.. jätkab siis siin -- 9000 p/min = 150 p/sek ; 900 / 150 = 6 sek
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| 29.06.2004 at 11:31 |
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