yeah, but they are making cam's and the like out of titanium and pricier metals. The bottleneck is price and reliability.
Try pegging one of these engines at 17,000 rpm for several hours on end and you will be the owner of one expensive semi-solid chunk of metal.
Instead of comparing peak RPM with sustainable RPM, lets compare similar things. Look at a modern Formula 1 racing engine (i.e. an engine capable of sustaining high RPM for a "long" time). In a recent Car and Driver they do the math to look at acceleration and masses involved. The average piston weighs 14.9 ounces. These engines redline at about 18,000 RPM. If you work out all the math, at that RPM the piston accelerates from a dead stop to ~100 MPH in ~46mm. To top that it does this 600 times per second. All of this translates to 9000 pounds of force being exerted on the sysetem every 1/600th of a second. Want to be on the wrong end of that when it explodes?
Similarly Chrysler was designing an electric (?) race car a while back that stored extra energy in a flywheel. To protect the crew they had to encase the whole thing in several layers of Kevlar after one tore apart and caused some serious damage.
Anyway, point of all of this is, cost keeps us back. Note that these things all come from expensive racing programs and most don't last for more then a few hours w/o a rebuild anyway.
I'm sure with current technology we could build a hard drive that could "peak" at much higher rates, but that couldn't sustain them. Following the motorcycle example, these special bikes spin at a rate about twice that of a "normal" bike.
So what do you say... how about a hard drive that peaks at 30,000rpm... now that would be something
How about anyone executed on death row. Surely it is a federal employee who puts them to death,or a state employee at the very least, which in my opinion can be viewed as the same for this argument. Regardless of what level you look at it from, whether it is the person throwing the switch (or however else they do it), or the justice who permits the death penalty, someone representing government kills this person.
Unless, of course you want to get in to the argument of the person killing themself by putting themself in the position in the first place. (Which I don't)
As for the importance issue, obviously these people are important to someone. Additionally, anyone in this situation is important to the system of laws in this country by establishing further precedent for the death penalty.
Slashdot Mirror
yeah, but they are making cam's and the like out of titanium and pricier metals. The bottleneck is price and reliability.
Try pegging one of these engines at 17,000 rpm for several hours on end and you will be the owner of one expensive semi-solid chunk of metal.
Instead of comparing peak RPM with sustainable RPM, lets compare similar things. Look at a modern Formula 1 racing engine (i.e. an engine capable of sustaining high RPM for a "long" time). In a recent Car and Driver they do the math to look at acceleration and masses involved. The average piston weighs 14.9 ounces. These engines redline at about 18,000 RPM. If you work out all the math, at that RPM the piston accelerates from a dead stop to ~100 MPH in ~46mm. To top that it does this 600 times per second. All of this translates to 9000 pounds of force being exerted on the sysetem every 1/600th of a second. Want to be on the wrong end of that when it explodes?
Similarly Chrysler was designing an electric (?) race car a while back that stored extra energy in a flywheel. To protect the crew they had to encase the whole thing in several layers of Kevlar after one tore apart and caused some serious damage.
Anyway, point of all of this is, cost keeps us back. Note that these things all come from expensive racing programs and most don't last for more then a few hours w/o a rebuild anyway.
I'm sure with current technology we could build a hard drive that could "peak" at much higher rates, but that couldn't sustain them. Following the motorcycle example, these special bikes spin at a rate about twice that of a "normal" bike.
So what do you say... how about a hard drive that peaks at 30,000rpm... now that would be something
MIKEOCUnless, of course you want to get in to the argument of the person killing themself by putting themself in the position in the first place. (Which I don't)
As for the importance issue, obviously these people are important to someone. Additionally, anyone in this situation is important to the system of laws in this country by establishing further precedent for the death penalty.