1000-mph Car Planned 380
Smivs notes a BBC report on a British team planning a 1000-mph record-breaking car. The previous land-speed record broke the sound barrier. The proposed vehicle will get from 0 to 1,050 mph in 40 seconds.
"RAF pilot Andy Green made history in 1997 when he drove the Thrust SSC jet-powered vehicle at 763 mph (1,228 km/h). Now he intends to get behind the wheel of a car that is capable of reaching 1,000 mph (1,610 km/h). Known as Bloodhound, the new car will be powered by a rocket bolted to a Typhoon-Eurofighter jet engine. The team-members have been working on the concept for the past 18 months and expect to be ready to make their new record attempt in 2011."
1000 mph speed, 100 gallons per mile efficiency (Score:4, Informative)
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I've got a better idea (Score:5, Insightful)
MPG is an obsolete measurement (Score:5, Insightful)
I know it is not currently but it will be one day.
I like achievements like these. I know it costs a lot of money but my hat off to the engineers who can come up with these machines let alone the driver who dares to do it. Too many people want to sit on their couch and bitch secure in the safe little world and never get out to live life.
I know many will scream "whats the point". Well the point is that no one has done it, people claim it cannot be done, and throw in the challenge of trying. It gives kids something to dream about, perhaps sparking some enthusiasm for different careers.
Besides we might just learn something
Re:MPG is an obsolete measurement (Score:5, Insightful)
As JFK once put it very succinctly...
"We choose to go to the moon, and do the other things, not because they are easy, but because they are hard"
If all we ever do is the easy stuff, nothing ever changes.
And for all the people saying this is easy, why don't you give it a try then? It isn't just the money, this stuff takes serious engineering and real talent on the part of the driver/pilot.
What amazing stuff have you done in your life?
Re:MPG is an obsolete measurement (Score:5, Interesting)
Reasonable men adapt to the world around them; unreasonable men make the world adapt to them. The world is changed by unreasonable men.
-- Edwin Louis Cole
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I know many will scream "whats the point".
WHAT IS THE POINT?
Now, I get the point of getting something to go that fast. I understand the point of getting a manned vehicle tho got hat fast. I get the point of getting one of the two to go that fast close to the ground.
It's just the wheels bit that seems patently silly to me. It is simply not a rational choice at those speeds, and the only reason to have them is because it supposedly 'makes it a car' so you can compete in that category in stead of as a rocket or plane.
I makes no sense. It's like set
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I makes no sense....
Your words, not mine, but I agree.
Re:MPG is an obsolete measurement (Score:5, Insightful)
Asking the point of engineering feats like this is like asking the point of sex being enjoyable. The point of sex being enjoyable is to encourage procreation. The point of engineering being enjoyable is to encourage creativity.
Of course, engineers like to see their creations at work, doing useful things, just like chefs love to see people eating. But speaking as an engineer who grew up in a restauranting family, you've got to be a little bit insane to go into either business. Nobody would become a chef unless they had a bizarre compulsion to cook. My brother went into that business, and you literally can't keep him away from the stove or the grill if there is cooking going on. The only reason he can sit still in a restaurant, I think, is professional interest in other aspects of the diner's experience, but even then he can't resist the temptation to host the meal, to buy drinks, to make suggestions for what to select from the menu. Some of his buddies have actually put full restaurant kitchens in their garages and spend their time off cooking.
When I visit my relatives, on the other hand, I find myself fixing their computer problems. I can't not fix their problems, even though I hate dealing with those kinds of messes. If cars were as easy to work on from general knowledge as they were forty years ago, I'd probably be fixing their cars too. I'm just addicted to the satisfaction of getting everything sorted out.
Re:MPG is an obsolete measurement (Score:4, Interesting)
Engineers who are paid for what they are doing are encouraged to use established solutions. That's why engineers go home and work on their own projects. Then they get to do something different, just for the sake of doing something differently.
Re:MPG is an obsolete measurement (Score:4, Funny)
Yes, we might just learn if Fruit of the Looms can withstand the force of a 1000 MPH "Oh SHIT!" moment.
Re:MPG is an obsolete measurement (Score:5, Insightful)
Using a jet engine off the shelf isn't the hard part, btw the rocket is a HTP hyrbid rocket that is developed for this project.
The real brain cruncher is how you design a vehicle that can survive an environment where supersonic shock waves are being reflected off of a desert floor back onto the body of the craft and so on. Remember the wheels are travelling on the ground at mach 1.4, if they were uncovered the top of the wheel would be travelling at mach 2.8 with regards to the local airflow. That's up there with the SR71 in terms of velocity.
Hardly off the shelf.
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the wheels are travelling on the ground at mach 1.4, if they were uncovered the top of the wheel would be travelling at mach 2.8 with regards to the local airflow. ...and the surface of the wheel accelerates from zero to mach 2.8 on distance of diameter of half the circumference of the wheel.
Say, the wheel is 1m diameter. The circumference is pi meters. 2.8 mach is 953m/s. That's 0.00164s to travel half the circumference (distance of half of turn of the wheel). 2.8m/s / 0.00164s. 1698m/s^2, that's 173 g.
An
Re:MPG is an obsolete measurement (Score:5, Informative)
It's not 173 g, it's over 46000 g (Score:3, Insightful)
Start over: centripetal a = v^2 / R
Plug in v = 476.5 m/s, R = 0.5 m (half of diameter); a = 454,000 m/s^2 approx.
Compare to g = 9.84 m/s^2 ; a is over 46,000 gee.
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Remember the wheels are travelling on the ground at mach 1.4, if they were uncovered the top of the wheel would be travelling at mach 2.8 with regards to the local airflow. That's up there with the SR71 in terms of velocity.
Not only that, but it happens at close to 1 atm whereas the SR71 hits those immense speeds in the stratosphere. This car is an incredible aerodynamic engineering challenge!
Re:MPG is an obsolete measurement (Score:4, Funny)
Re:MPG is an obsolete measurement (Score:4, Funny)
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Re:MPG is an obsolete measurement (Score:5, Interesting)
I expect my lecturer would disagree with you on that point. I'm an undergraduate at Swansea University, where a lot of the work (such as the aerodynamics) is being done. The computational fluid dynamics code that's being used to allow this thing to go 1000mph was developed here, powers aerospace firms like Airbus, BAE Systems and Rolls Royce, and has been decades in the making.
Which means that you sir, are trolling.
Re:MPG is an obsolete measurement (Score:4, Informative)
Stop insulting trolls. He's just a clueless idiot.
BTW, most people don't realize that their tires are speed rated. Tires are just rubber balloons, after all. Just ones with really thick walls. They will deform and even come apart if pulled hard enough. The faster a car goes, the more pull on the tire's tread and sidewall. Once the pull starts, it will most likely deform to an out of balance shape. In this case that out of balance will translate to a vibration, which translates to a bump, which translates to a lot of pieces to pick up off the desert floor.
A post above gave the figure of 173g for a 1m wheel travelling at 1000mph. That 1m wheel will be spinning at 8542 RPM. A slight imbalance at that rotational rate? Even the engineering of the tire will need novel ideas for strengthening the sidewall and lightening the tread to keep it balanced.
Re:MPG is an obsolete measurement (Score:5, Funny)
Maybe someone could figure out how to use the force of the air rushing past the car to help support it or even totally suspend it so one wouldn't have to use wheels at all. That would be cool!
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measurements like miles per kilowatt
Kilowatt-hour is what you want here. The watt is a _rate_ of energy consumption (power), not a lump of energy. Kilowatt-hour is the equivalent of one kilowatt consumed over the course of one hour: 1 kWh = (1000 joules / second) * 3600 seconds = 36000 joules
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To be fair, the entire US customary measuring system is obsolete...
And yet its powers of two make it far easier to represent in binary memory without incurring rounding errors.
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If it was really powers of 2 based, sure, but it has lots of 3s too, meaning the practical difference is marginal.
Sure, 10 is a really crappy base, but we're pretty much stuck with that by now, it so it makes sense to have the measurement system match the numeric system.
For computing, a base with only 2s as factors (e.g. 8 or 16) would be "better", but
then the whole point of computers is to make things easier for _us_, so that's not really a concern.
What would be the most useful for us (as a counting base _
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But, yeah, I agree it's pointless, specially when in the US, the average highest speed limit is 70mph.
Re:I've got a better idea (Score:5, Insightful)
How many land speed record attempts do you know that were done by vehicles intended for commercial production and sale?
Part of this project is to inspire the younger generation whilst at school that engineering and science isn't dull and boring and something worth getting fired up about. The UK has a shortage of home grown talent when it comes to engineering and this is helping change that for the future.
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Precisely what I was saying pointless. How many NASCAR cars you can buy and drive on the streets?
I agree more on the F1 perspective, aerodynamics, handling, efficiency, safety, etc. Do you think land speed records provide mor "fun" than a circuit race?
I believe the old CART (now mixed with IRL) and F1 have more to take from.
Yes, you won't see an F1 in commercial production, but y
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Yes, because military jet engines are known for their high fuel efficiency...
Re:I've got a better idea (Score:5, Insightful)
Some simple calculations will show you that 1000 mpg (for g as in gallon of gasoline) is physically impossible.
(1) Energy content of gasoline --- 36.6 kWh/US gallon. Let's assume that your engine works at the absolute thermodynamic limit (40%) for a combustion engine so you get 16 KWH of work out of it. .1, you have to expend P = 1.25 KW to continue moving.
(2) The power to move your vehicle through air is P = (1/2)(density)(projected area)(drag coeff)(velocity^3)
(4) At sea level, 25C, 60 MPH, A = (1 m)^2, CD =
(5) In one hour, therefore, you have consumed 1.25 KWH ~ (1/12) gal. You have also moved 60 miles, giving you 60*12= 720 mpg.
So, even under the most generous conditions, you cannot possibly do better that 700 mpg. Of course, we have neglected rolling friction of the tires and assumed that your regenerative braking system is so good that you expend no net energy starting and stopping. 720 mpg is just the energy required to move the air out of your way as you cruise to work.
At first, I was going to mod you OT and move on, but I felt like there was something important to be said here -- efficiency is not like performance. In performance, one can always throw more energy at the problem (he's using a jet engine FFS, new sports cars are always breaking HP limits) but when going for efficiency, you are going to see diminishing returns. 100 mpg is doable, 200 mpg is doable with severe sacrifices (mainly in the comfort/cargo dept). Past that, I feel like the laws of physics are not going to be particularly kind.
Re:I've got a better idea (Score:4, Insightful)
Of course, one can always ignore your calculations by doing things differently than how you expect.
For example, what is the thermodynamic limit of fuel cells? What are the thermodynamic limits of every other alternative fuel or alternative engine type? What if we use more highly refined fuel that carries more energy per unit? What if you do not travel at 60 mph in order to lower wind resistance? Speaking of wind resistance, what if you were to travel through specially designed low air pressure conduits to make air resistance nearly 0? We can change all sorts of things about the situation to make your math, while good, completely irrelevant to the scenario.
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As a side note at highway speeds drafting can significantly increase fuel efficiency by moving to a computer controlled highway system we could increase average fuel economy above what simple drag calculations would suggest.
PS: I don't think you wi
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The real question... (Score:5, Funny)
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Must.
not.
bite.
Re:The real question... (Score:5, Funny)
Yeah, if Britain was 11 miles long.
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Even at top speed, it would only travel 11 miles in 40 seconds..
Re:The real question... (Score:5, Funny)
I wonder ... (Score:3, Funny)
I wonder how many stars it will score on the crash test ...
To the moon! (Score:2, Funny)
I wonder how many stars it will score on the crash test ...
I wonder how many stars it will PASS on the crash test ;)
You should see the 'other' guy. (Score:2)
First you have to build a wall that won't be obliterated when hit by a 2 ton missile traveling at 1000mph.
Car? (Score:2)
When does it stop being a car? (Score:2, Insightful)
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Re:When does it stop being a car? (Score:4, Interesting)
Fighter jet landing gear and tires are not built for 1,000mph. Maybe 300-350 absolute max. Rebuild it to do 1,000mph, and you'll end up with something that looks quite a lot like this thing does.
One similar speed record 'car' [landspeed.com] is literally an F-104 body, sans wings.
falling forwards (Score:4, Interesting)
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You are assuming constant linear acceleration. I think it is safe to say that the acceleration when the rocket motor is turned on will be somewhat more dramatic than that. Even if you use your figure, bear in mind that gravity will still be there, and the combined force will be sqrt((1.19g)^2 + (1g)^2) = 1.55g, so the pilot would feel 55% heavier than normal.
Fixed that for you.
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How can you call it a car... (Score:2)
...when it is not kept on the ground by gravity?
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Can you call a Formula 1 racing car a car? Look at what happens when one of those loses a wing...
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Well, at least they are driven by the wheels. These rocket "cars" would go faster without any.
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So.. supercars and racing cars aren't "cars" either?
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Would they go faster or slower without wheels?
Splat (Score:2, Funny)
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To the bug, once you reach the speed of "splat", any faster is irrelevant.
I figure anything past the first 60mph isn't going to really change anything. :-P
Cheers
Stupid rules (Score:2)
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You can. [wikipedia.org] But if you're interested in sheer speed, then it's straight-line records like this which are interesting.
Sponsors? (Score:5, Funny)
Is this an ACME funded project?
ACME [wikipedia.org]
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The video... (Score:2, Funny)
"When you're ready, you'll be able to outdrive them."
Thats not a car (Score:2)
A jet that just happens to not take off (or so they hope) is not a "car". I personally set the limit of car speeds as those achieved by a combustion engine, and even then, the top drag cars are held to the earth by giant down-force-generating wings.
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Same goes for Formula 1 cars -- if it weren't for wings which push down, they'd take flight.
At what point does it stop being a car? Why stop at internal combustion? What about electric cars? Mr Fusion???
It's not like there isn't a category of jet powered cars
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Is this [jimsrepair...actors.com] a car? It has wheels and travels on the ground.
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> Same goes for Formula 1 cars -- if it weren't for wings which push down, they'd take
> flight.
A short flight as they lose thrust when they lose contact with the ground.
> At present, if it's intended to travel on the ground with wheels, at what point (other
> than the completely arbitrary one you've given) does it stop being a car??
Another completely arbitrary one, evidently.
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Actually, that was my point. :-P
Cheers
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Please see: http://en.wikipedia.org/wiki/Internal_combustion_engine [wikipedia.org]
Specifically, there are a number of types of engine [wikipedia.org]
that classify as "internal combustion", and jet engines (in the general case, e.g. pump-jets on SeaDoos don't count) are one of those types. And before you go off the handle, rockets are actually a sub-class of jet engine.
Aikon-
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As with the legal system, intent often makes the biggest distinction.
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Jeremy Clarkson: (Score:5, Funny)
Hamster! You want to try it out ?
We all know it was (Score:2, Funny)
So? (Score:2, Insightful)
Yeah, sure, but... how well does it corner?
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The proposed vehicle will get from 0 to 1,050 mph in 40 seconds. Yeah, sure, but... how well does it corner?
Like a missile.
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Re:So? (Score:5, Insightful)
lol something going that fast cant. at those speeds it litterly is flying. the gforces litterly pull it off the ground and its riding on them.
I feel dumber for having read that.
the point (Score:5, Insightful)
Whatsthepoint
"Candy doesn't have to have a point. That's why it's candy" -- Charlie Bucket, Charlie and the Chocolate Factory
If you can't see the analogy... We may not be able to save you.
When's the SUV coming out? (Score:2)
I'm really not impressed with the 1000mph car. I mean, it would help me get to work on time more quickly but what if I need to run out for some beers and firewood before the game and my wife wants me to take the kids with me? For that, I really need a 1000mph station wagon or SUV? Dodge are you hearing this? :-)
these fast car challenges are kinda dumb (Score:2)
I mean, it was cool and everything when we're talking about powered wheels pushing these suckers this fast. But when we're talking about what's essentially a jet aircraft using massive aerodynamic engineering to keep it wedded to the ground with fancy tires designed not to explode under the stress, it just seems ridiculous. It's a jet aircraft, let it fly above the ground and not be subject to the difficulties of staying in contact with the ground. If you still want to be pedantic and not make it a true air
Darwin award? (Score:2)
If your wife keeps yelling "faster, FASTER!" in bed, maybe it doesn't mean you should attach a jet engine to your car...
Or at least don't count on her getting your life insurance after you crash...
huh (Score:2)
Smivs notes a BBC report on a British team planning a 1000-mph record-breaking car. The previous land-speed record broke the sound barrier. The proposed vehicle will get from 0 to 1,050 mph in 40 seconds.
I'm sorry. Could you repeat that? I think I got some crazy in my ear.
Stupid (Score:2)
Can we please stop calling these "cars?"
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Airplanes have wheels... even the space shuttle has wheels. They don't make any claims to be cars.
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1. You can't (and won't ever be able to) buy one.
If I showed up with a suitcase of cash after the attempt had been completed, I would think they would be happy to take my money. Also, by this reasoning any sort of limited-numbers, not-for-public-consumption car (prototypes, racers, etc) are also not cars.
2. You can only drive it at speed on salt flats.
Your point being...?
3. You can't drive it on public roads (driver and pedestrian safety, shooting flames of death, etc).
The same would apply to F1 or NASCAR cars, but those are definitely cars. Ok, maybe not the shooting flames of death part.
4. Even if you could drive it on-road, its turning radius is probably a mile!
Why would you want to take the thing on the road?
It looks like your definition of "car" is "a vehicle which can b
From the Submitter (Score:2)
I did wonder about calling this a 'car' when I submitted the story. A true 'car' should have driven wheels and either an electric or internal combustion engine. But it is designed as a terrestrial vehicle, and has wheels. 'Car' is a short form of 'motor car' which in turn is a contraction of 'motor carriage', and as this vehicle carries a man it is a carriage of sorts and it certainly has a 'motor' (well two actually) so ultimately, yes, it is a car.
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Although the lexiconography of the word car is interesting, it also brings to mind another comparison: a 1000mph jet car compares to regular an internal combustion car a lot like an internal combustion car compared to a horse-drawn carriage in the 19th century.
Right (Score:2)
1. You can't (and won't ever be able to) buy one.
I can't buy a McLaren F1 either. So the F1 ain't a car. There are MANY custom made cars, you cannot buy. So they don't qualify either. Hell, you can't buy my car. So my car is not car.
2. You can only drive it at speed on salt flats.
If you were able to find a 9 mile long straight and wide piece of asfalt it would do as well.
3. You can't drive it on public roads (driver and pedestrian safety, shooting flames of death, etc).
The salt flat is public propert
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D'oh, they're going to have to rethink the designation of race 'cars' as well.
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the last person i heard of strapping a rocket to a car to see how fast they could go ended up driving into a mountain because he couldnt stop
The intention was not to stop, but an actual test of the Overthruster.
and this was in the salt flats of utah (at least thats where he started, clearly it wasnt so flat where he ended up)
Certainly the 8th dimension would not be described as flat!
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I think a more practical item would be brain and intestine holders! Nobody is walking away from something like that in a crash.. :s
It's not like a 1000mph car is even useful for anything - it is still impressive to develop the tech, and it could be useful for other applications, but personally I'd just design an AI to pilot the car rather than risk someone's life like that. I love my cars, but if you need to move that fast, you move through the air where stuff like bumps in the ground and wheel bearings are
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They did that one already.
Twice, in fact.
First one failed to get airborne, but it did get moving pretty fast.
On the revisit, the (much larger) rocket motors failed immediately on ignition, destroying the car in a huge fireball.
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> Why doing this?
Why do anything other than squat in the mud and wait for the sun to go out?
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Michael Phelps.