"The SR-71 is not completely "air-breathing." It used a turbo-ramjet hybrid design created by engineer Ben Rich. It only was airbreathing when functioning as a ramjet."
You just contradicted yourself. A turbo-ramjet consists of a turbojet and a ramjet. If it had a rocket it would be called "rocket-ramjet".
I suppose the parent was referring to cooler air being denser...but ya at a zillion feet in the air I don't think night/day cycles are going to affect air density too much...
Just a though, but perhaps with the lower gravity ion engines could be used to stay in the proper orbit. That would sure increase lifetime.
Re:In other words......
on
Hack Your Car
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· Score: 1
Yes, sorry I didn't specify...it's a Diesel block with a different head. BUT the compression ratio is somewhere around 10:1, which is very high for a gasoline engine, let alone a forced-induction engine.
The 1.8 block has been around since 1975. It's very obiously over-engineered since they started with ~90hp naturally aspirated and are now selling the 1.8T TT with 220 hp. I think the key is the cast-iron block; although prohibitively heavy, cast iron has near-ideal heat properties (high specific heat capacity, good conductivity). ie it's very hard to improve on the performance of a cast-iron exhaust manifold, but since it is so heavy it's often replaced by steel headers which have worse heat characteristics and therefore need to be wrapped etc to approach the effectiveness of cast iron.
I have been told VW/Audi spends the most money on engine development of any car company in the world. I have no source for this, so you may want to check the facts.
Re:Keep in mind the car in question
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Hack Your Car
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· Score: 2, Informative
The thing is, the VW/Audi 1.8T engine that is to commonly boosted to heck has a cast-iron Diesel block and forged steel crankshaft.
Diesel setups are very strong to deal with the high torque, and the RPM limiting factor of Diesels is combustion expansion rate.
So running a 1.8T at boost pressures up to 18 psi with gasoline isn't much different stress-wise than a normally-running Diesel.
In short: the 1.8T is fricken' strong. This is a common trait amongst most turboed engines.
Re:Automotive engineering involves compromises
on
Hack Your Car
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· Score: 1
Keep in mind that all engines produced are de-tuned. Manufacturers can't sell reliable engines that are running at the limit, and honestly they don't. They need leeway to increase power to keep up with the Joneses next model year. Nissan's universal 3.5 V6 ranges in power from 220 - 290+ horespower, with power increases every year.
Plus, most engines now are tuned for economy. If you don't care about fuel consumption/300,000km engine life you can get gobs more power out of turbo engines with a chip upgrade/manual boost controller.
Re:Friend of mine has a BMW
on
Hack Your Car
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· Score: 1
From the terms you use, you don't seem to be a mechanic or tuner.
How going from AWD to RWD would give you better acceleration and handling in a rally is beyond me. Perhaps the cheat is better named "increased power and friction co-efficient"? That's basically all you are describing.
Seasons have nothing to do with the earth's distance from the sun.
The angle at which the sun's light reaches specific points on the earth's surface determines the season at each point.
I attended a Waldorf School here in Canada in grades seven and eight. Waldorf schools are Rudolph Steiner schools.
I found that my Waldorf school produced equal numbers of polarly opposite student types. Half of my class went on to public secondary school and failed nearly every class, while my half of the class had a 90%+ secondary school average.
Although it is true that there is a huge focus on art, dance, etc, and they promoted their own brand of christianity, in grades seven and eight they put all of that aside and taught very good science, history and geography (a greater depth than in the public system).
Two years was enough for me because although I am artistic, I am a very conservative christian and very much not "artsy".
The telephone was invented in Boston, and the patent specification was written in Brantford.
I live one hour away from Brantford and would love to support that claim to fame, but according to the Alexander Graham Bell Museum in Baddeck, NS (a Canadian National "Park" which I have also visited), the telephone was not invented in Canada.
Thermal conductivity and electrical conductivity are different properties
Yes, but they are for the most part somewhat proportionally related. Free electron movement is a very good indicator of free heat movement, since heat is basically motion at the atomic level.
Because unlike copper, the oxides ("rust") of silver conduct electricity and heat nearly as well as pure silver itself. Oxides of copper are insulators. As well, silver requires nitrogen or sulphur compounds to tarnish whereas copper tarnishes in moist air.
But at least here, in the courts, you can buy a good lawyer (White Anglo-Saxon if need be) no matter which race you are.
In Canada, with our Human Rights Commission overruling both the courts and parliament, you have a better chance of winning your case if you are a hard-done-by "visible minority". There are many bleeding hearts out there who will fight for your cause no matter how evil or good you may actually be, as long as you have a good story about being oppressed.
Slashdot Mirror
Reading comprehension problem anyone?
The poster said "Not that copying dvds to vhs (why?!) is the only reason to disable macrovision out there."
You don't play a guitar with a bow. My little nephew always calls our violin a guitar, but that's another story.
"The SR-71 is not completely "air-breathing." It used a turbo-ramjet hybrid design created by engineer Ben Rich. It only was airbreathing when functioning as a ramjet."
You just contradicted yourself. A turbo-ramjet consists of a turbojet and a ramjet. If it had a rocket it would be called "rocket-ramjet".
It is always air-breathing.
Um...heuristics anyone?
I suppose the parent was referring to cooler air being denser...but ya at a zillion feet in the air I don't think night/day cycles are going to affect air density too much...
No, because once it's well inside the machine you can stop the jittering.
Wireless is all a serial connection, unless you broadcast bits in parallel at different frequencies.
Spread spectrum is still serial.
I know your post was supposed to be sarcastic, but really it doesn't make much sense.
I suggest you read the post again. quote: thousand = 10^3, million=10^6
Canada uses thousand = 10^3, million = 10^6, billion = 10^9, trillion = 10^12, quadrillion = 10^15, etc just like the U.S.
The U.S. isn't the only country in North America!
Just a though, but perhaps with the lower gravity ion engines could be used to stay in the proper orbit. That would sure increase lifetime.
Yes, sorry I didn't specify...it's a Diesel block with a different head. BUT the compression ratio is somewhere around 10:1, which is very high for a gasoline engine, let alone a forced-induction engine.
The 1.8 block has been around since 1975. It's very obiously over-engineered since they started with ~90hp naturally aspirated and are now selling the 1.8T TT with 220 hp. I think the key is the cast-iron block; although prohibitively heavy, cast iron has near-ideal heat properties (high specific heat capacity, good conductivity). ie it's very hard to improve on the performance of a cast-iron exhaust manifold, but since it is so heavy it's often replaced by steel headers which have worse heat characteristics and therefore need to be wrapped etc to approach the effectiveness of cast iron.
I have been told VW/Audi spends the most money on engine development of any car company in the world. I have no source for this, so you may want to check the facts.
The thing is, the VW/Audi 1.8T engine that is to commonly boosted to heck has a cast-iron Diesel block and forged steel crankshaft. Diesel setups are very strong to deal with the high torque, and the RPM limiting factor of Diesels is combustion expansion rate. So running a 1.8T at boost pressures up to 18 psi with gasoline isn't much different stress-wise than a normally-running Diesel. In short: the 1.8T is fricken' strong. This is a common trait amongst most turboed engines.
Keep in mind that all engines produced are de-tuned. Manufacturers can't sell reliable engines that are running at the limit, and honestly they don't. They need leeway to increase power to keep up with the Joneses next model year. Nissan's universal 3.5 V6 ranges in power from 220 - 290+ horespower, with power increases every year.
Plus, most engines now are tuned for economy. If you don't care about fuel consumption/300,000km engine life you can get gobs more power out of turbo engines with a chip upgrade/manual boost controller.
From the terms you use, you don't seem to be a mechanic or tuner.
How going from AWD to RWD would give you better acceleration and handling in a rally is beyond me. Perhaps the cheat is better named "increased power and friction co-efficient"? That's basically all you are describing.
Seasons have nothing to do with the earth's distance from the sun. The angle at which the sun's light reaches specific points on the earth's surface determines the season at each point.
I attended a Waldorf School here in Canada in grades seven and eight. Waldorf schools are Rudolph Steiner schools.
I found that my Waldorf school produced equal numbers of polarly opposite student types. Half of my class went on to public secondary school and failed nearly every class, while my half of the class had a 90%+ secondary school average.
Although it is true that there is a huge focus on art, dance, etc, and they promoted their own brand of christianity, in grades seven and eight they put all of that aside and taught very good science, history and geography (a greater depth than in the public system).
Two years was enough for me because although I am artistic, I am a very conservative christian and very much not "artsy".
The telephone was invented in Boston, and the patent specification was written in Brantford.
I live one hour away from Brantford and would love to support that claim to fame, but according to the Alexander Graham Bell Museum in Baddeck, NS (a Canadian National "Park" which I have also visited), the telephone was not invented in Canada.
Government of Canada's version
Yes, nitrogen compounds it is. Although I think the most violent reactions (if you can call them violent) are with sulphur compounds.
Because unlike copper, the oxides ("rust") of silver conduct electricity and heat nearly as well as pure silver itself. Oxides of copper are insulators. As well, silver requires nitrogen or sulphur compounds to tarnish whereas copper tarnishes in moist air.
But at least here, in the courts, you can buy a good lawyer (White Anglo-Saxon if need be) no matter which race you are. In Canada, with our Human Rights Commission overruling both the courts and parliament, you have a better chance of winning your case if you are a hard-done-by "visible minority". There are many bleeding hearts out there who will fight for your cause no matter how evil or good you may actually be, as long as you have a good story about being oppressed.
Don't worry, not all hope is lost...they have lots of opium in the Middle East.
the West System uses a powder to thicken fibreglas resin and makes a very nice product.
I know you are being sarcastic, but still, you got it backwards.
Pigs will fly when HF electrical signals don't induce radio waves.