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Registered:
May 2003
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jumbo jet 1/4 mile
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Mon, 22 November 2004 07:57
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After flying on a jumbo recently, i was curious if any one knows or could find out what 1/4 mile time it would get and its 0-100kmh time, all i know is it felt quik
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Mon, 22 November 2004 08:09
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It depends on how much they weigh and how much power you use.
I G-Tech'd one I was flying - for power - and got about 72,000hp but I think it's more like 100,000hp odd.
I'll try to G-Tech one some time soon for the 400m run.
If we're real light and use a lot of power, the power-to-weight ratio on one of the ones I fly would be something like ~210 tonnes and a thrust of about 96 tonnes.
So yeah, it should go okay I reckon.
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Location:
melbourne
Registered:
October 2003
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Re: jumbo jet 1/4 mile
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Mon, 22 November 2004 08:10
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it wouldnt be that fast, i saw on some show a drag race between a dodge viper, and an F-16 fighter jet, over 1/4 mile, and 1000m. the dodge easily won the 1/4 mile, but the f-16 caught up over the full 1km. the dodge does about a 12 sec 1/4.
so a jumbo would be way slower.
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Location:
Perth
Registered:
September 2004
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Re: jumbo jet 1/4 mile
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Mon, 22 November 2004 08:42
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Yeah, jets don't pull that hard at low speeds. Then again, they pull a lot harder at 300km/h than they do at 100km/h... if they had a drag race between a dodge viper and an F16 from a 150km/h rolling start the viper wouldn't have a chance.
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Location:
Campbelltown
Registered:
November 2003
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Re: jumbo jet 1/4 mile
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Mon, 22 November 2004 08:50
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plus to go from zero it will still be taxying and will probably only just be taking off by the end of the quarter
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Location:
Newcastle
Registered:
June 2002
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Re: jumbo jet 1/4 mile
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Mon, 22 November 2004 12:22
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747's are powered by turbines. Down low they are slow. Up top they GO GO GO
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Toymods member
I supported Toymods
Location:
Rydalmere, NSW
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Tue, 23 November 2004 00:19
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The take-off force (torque?) on the runway from a standing start is like 1.5 or 2G's isn't it? All I can remember on my first flight aboard an old 727 to Tasmania when I was about 9 years old was that force of my back getting welded to the seat on take-off.  Pretty damn good.
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Location:
Adelaide, SA
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Tue, 23 November 2004 01:13
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Drag racing a car against a jet aircraft.. sounds like a very american thing to do!! Like has already been said, lets see the dodgy viper beat the jet from a 150km/h "rolling" start 
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Location:
Sydney
Registered:
April 2004
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Re: jumbo jet 1/4 mile
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Tue, 23 November 2004 06:42
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| RAV-GT4 wrote on Tue, 23 November 2004 11:19 |
The take-off force (torque?) on the runway from a standing start is like 1.5 or 2G's isn't it? All I can remember on my first flight aboard an old 727 to Tasmania when I was about 9 years old was that force of my back getting welded to the seat on take-off. Pretty damn good.
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Word. Same thoughts when I was in a 747 at the age of 10.
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Location:
Newcastle
Registered:
June 2002
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Re: jumbo jet 1/4 mile
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Tue, 23 November 2004 12:15
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Hell yeah, Im going to canada in 6 weeks snowboarding. I cant wait for the HUGE shove in the back when we take off!
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Tue, 23 November 2004 22:31
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| RAV-GT4 wrote on Tue, 23 November 2004 11:19 |
The take-off force (torque?) on the runway from a standing start is like 1.5 or 2G's isn't it? All I can remember on my first flight aboard an old 727 to Tasmania when I was about 9 years old was that force of my back getting welded to the seat on take-off. Pretty damn good.
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No, way, way less.
Maybe 0.3 of a G at best.
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Location:
Vancouver BC, Canada.
Registered:
November 2004
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Re: jumbo jet 1/4 mile
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Wed, 24 November 2004 01:35
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| old_mr2 wrote on Tue, 23 November 2004 23:15 |
Hell yeah, Im going to canada in 6 weeks snowboarding. I cant wait for the HUGE shove in the back when we take off!
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Where you headed specifically?
Also, I've seen another video of a drag with a jet vs a modified honda civic. Civic took it.
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Location:
Tassie
Registered:
October 2003
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Re: jumbo jet 1/4 mile
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Wed, 24 November 2004 04:14
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the make naked news in toronto .
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Location:
Castlemaine Vic
Registered:
November 2002
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Re: jumbo jet 1/4 mile
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Wed, 24 November 2004 07:11
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Bill, what flight/s do you do? interstate, overseas?
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Wed, 24 November 2004 08:33
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| twincam_ke20 wrote on Wed, 24 November 2004 18:11 |
Bill, what flight/s do you do? interstate, overseas?
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I'm a 747 Captain with a mob called Air Atlanta Icelandic.
I'm normally based in Kuala Lumpur these days, flying freighters for Malaysian Cargo.
We mainly fly through Dubao, on the way to Europe. We also go to Sydney & Melbourne. If you're in Sydders or Mel and see a Malaysian freigher with the rego starting with the letters 'TF-' then that's one of mine.
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Registered:
October 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 06:31
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thats awesome bill... i would love to see the transition from day to night from a cockpit on one of those birds, would be a surreal experience i can't wait to see the next breed of jumbo jets that engineers at NASA are coming up with(in conjunction with other agencies)...they'll use a scram jet engine and be in the shape of a giant wing from what i gather
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Location:
Land of Oz
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 10:56
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Hi,
NASA research is mainly into military applications at the moment, tho their ramjet test machines are hitting around Mach7 or something.
I saw something on TV tonight that spoke about the new Airbus A380 double-decker passenger plane, and they were talking about it having a gym and shops and stuff. Yeah... that'll really happen. The original 747 had a cocktail lounge and other niceties until the Airline companies saw they could jam in a bunch more seats and get more money. I'm sure the A380 will go the same way and be chock full of seats, rather than have shops and spas and stuff.
The 747 is near the end of its life and Boeing, for the first time, have come 2nd to Airbus in sales and deliveries. Boeing thought about doing some more stretches to the 747 but decided against it. They then went onto their sonic-cruiser option, but that died away also. Now they're working on the 7E7 Dreamliner to try and recapture the lost market.
I hope they succeed 'cos the Airbus is European and that means France is heavily involved and I hate anything French.
Now, I'd like to see a Viper take on an F15 from a standing start on an aircraft carrier. You pull a stack of Gs on the take-off from the steam catapult, and more when you stop and the hook catches the wire.
Matter of fact, I'd love to have a stack of old shit box cars and launch them into the ocean from the catapult, just to see how far I can sling them.
Oh, and bring back the Concorde... better yet, bring back the Connie!
seeyuzz
river
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Registered:
October 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 11:42
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river: It will be interesting to see what comes of all this, i mean after the retirement of the 747, the Concorde was short live, which is a shame...I'm looking forward for the solar flare to be launched next year, mans closest thing to reaching other planets but this is straying away from the thread so i wonder what a jumbo jet would be like up against one that fairs the same weight yet equip with a ramjet engine
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Location:
Land of Oz
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 11:51
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Hi,
Ramjets require a large mass of air to enter the intake and this can only be achieved at high speeds. The aircraft will require normal turbine power to get enough speed to get the ramjets going. The aricraft will have to go at high supersonic speeds to start the ramjet.
Once the ramjets kick in I'm sure it'll go like a rocket (almost literally).
Light blue touch paper and stand well clear...
seeyuzz
river
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I Supported Toymods
Location:
south Melbourne/KL
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 12:14
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| Bill Sherwood wrote on Mon, 22 November 2004 19:09 |
It depends on how much they weigh and how much power you use.
I G-Tech'd one I was flying - for power - and got about 72,000hp but I think it's more like 100,000hp odd.
I'll try to G-Tech one some time soon for the 400m run.
If we're real light and use a lot of power, the power-to-weight ratio on one of the ones I fly would be something like ~210 tonnes and a thrust of about 96 tonnes.
So yeah, it should go okay I reckon.
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wow u actually had a G tech in a plane 
anyway i was wondering, since smoking is no longer allowed on any passanger aircraft(?), how come most planes still have ash trays on the seats?? 
Bill any idea how i can recreate "teh tarik" in melbourne??
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 12:30
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| river wrote on Tue, 30 November 2004 21:56 |
The 747 is near the end of its life
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Still got plenty of life left in it. The latest planned version is to use technology from the 7E7 & 777 programmes, and it'll be a lot lighter and more fuel efficient than the current -400's.
There'll still be 747's flying around a good twenty-plus years from now.
| b1gb3n wrote on Tue, 30 November 2004 23:14 |
anyway i was wondering, since smoking is no longer allowed on any passanger aircraft(?), how come most planes still have ash trays on the seats??
Bill any idea how i can recreate "teh tarik" in melbourne??
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Some airlines around the world still allow smoking (not very many though) and so the seats that are available to airlines all have the ashtrays still built into them.
What's a 'tarik' ?
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I Supported Toymods
Location:
south Melbourne/KL
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 12:39
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| Bill Sherwood wrote on Tue, 30 November 2004 23:30 |
| river wrote on Tue, 30 November 2004 21:56 |
The 747 is near the end of its life
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Still got plenty of life left in it. The latest planned version is to use technology from the 7E7 & 777 programmes, and it'll be a lot lighter and more fuel efficient than the current -400's.
There'll still be 747's flying around a good twenty-plus years from now.
| b1gb3n wrote on Tue, 30 November 2004 23:14 |
anyway i was wondering, since smoking is no longer allowed on any passanger aircraft(?), how come most planes still have ash trays on the seats??
Bill any idea how i can recreate "teh tarik" in melbourne??
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Some airlines around the world still allow smoking (not very many though) and so the seats that are available to airlines all have the ashtrays still built into them.
What's a 'tarik' ?
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teh tarik - the drink sold by indian ppl at road sides in malaysia. they sell them in a "mamak stall". If u havent tried, go try!! Also note how they make it
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Location:
Land of Oz
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 21:01
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Hi,
| Bill Sherwood wrote on Tue, 30 November 2004 23:30 |
]Still got plenty of life left in it. The latest planned version is to use technology from the 7E7 & 777 programmes, and it'll be a lot lighter and more fuel efficient than the current -400's.
There'll still be 747's flying around a good twenty-plus years from now.
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I'm sure there'll be 747s flying in another 40 years. However, the sales figures of the 747 are not what they once were and upgrades in avionics and power plants will keep it in the market for some time, but the 747 is a 1960s designed aircraft and the newer aircraft today are more efficient. Boeing has tried a few attempts at further stretches and that, but, the Airlines like newer things and are more keen on getting the latest stuff and it's not economically viable for Boeing to re-engineer the entire 747. More efficient engines and the latest avionics is the most cost-effective way to keep these aircraft going (a la DC8-63 into a DC8-73), but you can only go so far with that option. To lose more weight they will need composite materiels and I doubt Boeing will go through the expense of doing this on the 747 without guaranteed buyers. The buyers are looking at the new Airbus and the 777 models and are not showing too much interest in a "new" 747. Such a shame.
However, should the A380 run into major problems or whatever, it may open a door for Boeing to do this as Airlines will be clambering for large capacity aircraft and a "new" 747 could be just the ticket (assuming the mods make it more efficient than the A340 series).
Eventually the 747 will go the way of the older DC8 type planes, where they will be used on freight and in secondary level airlines. Hell, even the old 707 is still kicking around the skies in some places. Even the DC6 is still getting around, and also the famous DC3 still soldiers on. You can't keep a good plane down.
Boeing currently has two main product lines that have good sales and a good future for more sales - namely the 777 and the venerable 737. They stopped 757 production this year and the 767 production lines will be shutting down very soon. The sales just aren't there to keep these lines open. Sadly, the 747 is heading that way too. This is a shame 'cos I love the 747 and it will be a sad day indeed when you don't see them in the sky anymore.
The B52 has been given approval for re-engining - replacing the 8 turbojets for 4 turbofans. The USAF hopes this gives them another 40 years of life - which will make the B52 90 years old by then!
I also think the US have modded a couple of 747 for fire-bombing. Imagine one of these, flying just above tree-top level at low speed and dumping all that retardent? That'd be most impressive.
At the end of the day the 747 "Queen of the Skies" will slowly disappear like so many other classics. I remember how sad I was when the RA28 production creased, and I sure I'll be just as sad when the 747 comes to an end.
seeyuzz
river
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Registered:
June 2003
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Re: jumbo jet 1/4 mile
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Tue, 30 November 2004 23:09
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I can remember being on a little 25 seater typed jet thingy on the way to my honeymoon. On takeoff I was like,
"Hey, these things feel like they're going pretty quick..."
Then they get out on the main runway bit, and the jets REALLY kick in - nails you to the back of your seat - way better than the jumbo's. I was just sitting there loving every second of it, thinking, "I want my car to feel like this!".
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I Supported Toymods
Location:
south Melbourne/KL
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Wed, 01 December 2004 01:52
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| joorsh wrote on Wed, 01 December 2004 10:09 |
I can remember being on a little 25 seater typed jet thingy on the way to my honeymoon. On takeoff I was like,
"Hey, these things feel like they're going pretty quick..."
Then they get out on the main runway bit, and the jets REALLY kick in - nails you to the back of your seat - way better than the jumbo's. I was just sitting there loving every second of it, thinking, "I want my car to feel like this!".
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on behalf of ur wife "its our honeymoon!! Quit ur g-force noncense!! Start thinking about G-spot 
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Registered:
October 2004
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Re: jumbo jet 1/4 mile
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Wed, 01 December 2004 11:18
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it's been alleged that Qantas have already ordered 10 airbuses...looks like were going to be flying around in French planes
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Location:
Melbourne
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Wed, 01 December 2004 14:19
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Found this Rivers.
NASA's X-43A Scramjet Breaks Speed Record
NASA's X-43A research vehicle screamed into the record books again Tuesday, demonstrating an air-breathing engine can fly at nearly 10 times the speed of sound. Preliminary data from the scramjet-powered research vehicle show its revolutionary engine worked successfully at nearly Mach 9.8, or 7,000 mph, as it flew at about 110,000 feet.
http://www.nasa.gov/missions/research/x43-main.htm l
Now, imagine what the US have that's currently operational as black.
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Registered:
May 2003
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Re: jumbo jet 1/4 mile
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Wed, 01 December 2004 23:26
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its all getting away from my question, can anyone give a 1/4 mile and 0-100km time for the jumbo??
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Location:
Land of Oz
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Thu, 02 December 2004 00:19
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Hi,
It's not an easy question to answer 'cos there are many variables.
What model Jumbo are you talking about? The "Classic", which is the 747-100 or 747-200 models? Or are you referring to the 747-300 or 747-400 model? Or perhaps the stubby ultra-long range 747SP?
Is the aircraft loaded or empty? Also, temperature plays an important part 'cos the hotter the temp the longer it will take to accelerate. Furthermore, altitutde has a lot to do with it 'cos the higher the altitude (ie Mexico City) the thinner the air and the longer it will take. What engines... Rolls Royce, Pratt & Whitney or General Electric?
Asking the speed time of a Jumbo is sorta like asking for the speed time of a Corolla. Which Corolla? Which engine, etc?
Bill would be the best to answer this. But I don't think it would be a very good time 'cos a Jumbo needs quite a few thousand feet of runway to get to take-off speed. Assuming take off speed is around 200-230kmh and its taken you 5,000 feet to get to that speed (ie about a mile) then at 1/4 mile you're not going to be going very fast.
Check the internet. I'm sure that buried in there will be some information that can help you. Sorry if this doesn't satisfy your question.
seeyuzz
river
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Location:
Brisbane / Gold Coast
Registered:
May 2002
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Re: jumbo jet 1/4 mile
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Thu, 02 December 2004 04:12
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| river wrote on Thu, 02 December 2004 11:19 |
Hi,
It's not an easy question to answer 'cos there are many variables.
What model Jumbo are you talking about? The "Classic", which is the 747-100 or 747-200 models? Or are you referring to the 747-300 or 747-400 model? Or perhaps the stubby ultra-long range 747SP?
Is the aircraft loaded or empty? Also, temperature plays an important part 'cos the hotter the temp the longer it will take to accelerate. Furthermore, altitutde has a lot to do with it 'cos the higher the altitude (ie Mexico City) the thinner the air and the longer it will take. What engines... Rolls Royce, Pratt & Whitney or General Electric?
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For example, I've taken off at as low as ~205 tonnes, right up to 377.8 tonnes. That's a big difference.
The most powerful engines I've flown were the Pratt & Whitney JT9D-7R4G2's at about 53,850 lbs of thrust.
The wussiest where the P&W JT9D-7A's, at about 43,000lbs .... Pathetic!
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Asking the speed time of a Jumbo is sorta like asking for the speed time of a Corolla. Which Corolla? Which engine, etc?
Bill would be the best to answer this. But I don't think it would be a very good time 'cos a Jumbo needs quite a few thousand feet of runway to get to take-off speed. Assuming take off speed is around 200-230kmh and its taken you 5,000 feet to get to that speed (ie about a mile) then at 1/4 mile you're not going to be going very fast.
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If we're light we can get up to about 135kts or ~250km/h in around 1500 metres or so. (just guessing here)
If we're heavy, we run full power for about 45 seconds to get up to about 165kts or ~305k/h to lift-off, and we use over three kilometres of runway to do that. A four kilometre runway starts looking pretty short just before lift-off .... !
I'll try to get some numbers soem time with the G-Tec I have. It's not easy to do though, I have to steer the bloody thing with my left hand, my right hand is on the four throttles, etc ...
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I Supported Toymods
Location:
south Melbourne/KL
Registered:
June 2004
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Re: jumbo jet 1/4 mile
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Thu, 02 December 2004 16:46
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| Bill Sherwood wrote on Thu, 02 December 2004 15:12 |
[
I'll try to get some numbers soem time with the G-Tec I have. It's not easy to do though, I have to steer the bloody thing with my left hand, my right hand is on the four throttles, etc ...
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becareful there. wouldnt want to crash a plane into some control tower.
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