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No Cash Prize for Next DARPA Grand Challenge
General Lee's Peking writes to mention an Associated Press article about a sad development in the DARPA Grand Challenge. Because of some new DoD-related legislation, the organization will no longer be able to award the $2 Million prize to grand challenge winners. It's not all bad, though; they still get a trophy. From the article: "The absence of a lucrative cash prize has forced some teams to retool their game plan and others to drop out. Some fear it would be harder to attract corporate sponsors and hurt media coverage of the race, which drew a throng of reporters last year and inspired a PBS documentary. 'The icing on the cake is gone,' said Ivar Schoenmeyr, team leader of California-based Team CyberRider, which is retrofitting a Toyota Prius hybrid."
Yes. The money which is no longer available was prize money, as well as milestone prizes for the track B teams. The difference between track A and track B is that track A gives all its technology to the government at the end (in exchange for $1 million of development money), and track B has no such obligation. The track A funds (contracts rather than prizes) are still fully intact, so all of the track A teams are still in it. What's been cut out is the incentive for track B teams to enter. These are the teams that are NOT giving technology directly to the government, and are using the race as a vehicle for development of technology that can truly benefit the world in ways other than making robot death jeeps. Say, for example, saving hundreds of thousands of lives in traffic accidents every year.
So yes, I would much rather see a portion of the DoD's budget spent encouraging development of revolutionary safety technology for civilian drivers rather than a big contract to a traditional defense contractor for something that directly kills people. (Keep in mind, the funds were not -cut-, DARPA's authority to use them for prizes was simply removed.)
Interesting enough VW have already done it, see:n s_its.html
http://www.greencarcongress.com/2005/04/vw_abando
The VW Lupo is available but it only does 78.4mpg(US). Their development car did much better: 0.89 litres of diesel per 100 kilometres (264 mpg) top speed was still 75mph. but they could not make the commercial version cheaper than $25K
However, if your concern is that you want the *ability* to accelerate quickly - e.g., in an emergency - then you can still get your 100 mpg.
.if you're racing something that can be related to what you're selling).
Right, if you give up that accelerating most of the time. That's something to give up. Some people won't. It's what they primarily want out of a motor vehicle. There are also still tradeoffs to be made, since an engine that isn't capable of that sort of acceleration can be made smaller and lighter, but then we're getting into the 3000 mpg territory I was talking about and not a mere 100.
Various efficiencies of the power plant my also vary with speed and acceleration. That's why our cars don't all just have gas turbines in them. They tried 'em in road racing and they sucked. They tried 'em in oval racing and they were so good they were banned (there were market politics involved in this. Win on Sunday, sell on Monday . .
Oval racers don't do much in the way of sudden accelerating.
And, yes, of course, you can't have an unaerodynamic car or a ridiculously massive car and still get 100 mpg. However, I don't see that there's anything unrealistic that you have to sacrifice.
The realism of the sacrifice is an issue I did not address. I simply stated that to get one thing you will have to give up some other thing. I'm often chided on this very forum for suggesting "sacrifices" that are "unrealistic;" and yet I obviously think they are realsitic, because I have really made them.
I really can't tell if you're being sarcastic here or not.
Q.E.D. Ha, ha, I'm only being serious.
The first phrase makes sense, but you seem to be implying that the only way to get 100 mpg is to go really, really slow.
No, I was primarily making a social commentary, but I am implying that the slower you go the better the milage you can get. Taken to its logical extreme you will get the best "milage" by simply being content with where you already are. This applies to human power just as well as mechanical power.
However, as I said, I can make a Chevette that gets 100 mpg, while only using technology that was available at the time it was made, but the higher you want its potential performance the more you'll have to give up in milage. I'm not working with a clean slate with that one. For starters I have a given power plant with certain built in inefficienes.
The second quickest, cheapest way to increase its milage is to shed mass, but you'll have to give up passenger carrying capacity for that. The next is to reduce rolling resistence, but you'll have to give up tractive force for that. The next is to change the final drive ratio, but you'll have to give up acceleration for that. The next is to tune the engine for maximum efficiency, but again you will have to give up some acceleration for that as well. It's innate in the device. I could be on to certain aerodynamic changes, but you may have to give up "styling" for that (Hey, it's not exatly my favorite, but I don't actually object to the way a Chevette looks).
Of course the cheapest way to increase milage (irrespective of a specific target) is to simply teach you how to drive it. With gentle, unhurried patience.
Depending on local conditions this may, however, result in your getting to work at a slower average speed. It might well take as much as . . . a couple minutes longer.
On the other hand I might well beat your Porsche on my bicycle. The world is a mass of variables and one of the essential problems with designing a road vechicle is that you have to take them all into account.
For years Jaguar battled American complaints that their cars overheated. They couldn't understand it, because they kept improving the cooling system year on year, but the complaints kept coming.
So, one year, they actually sent some of the engineers to America, go figure. Their reaction?
"B