lutorm

52 ms·

601.
by lutorm 8y ago
What are the possible reasons for such long waiting times on spares? The manufacturer makes money putting those parts in new cars, it makes no money sending it out to repair yours...
602.
by lutorm 8y ago
First, it's not even true, according to most studies I've seen. Second, it only applies to ethanol made from corn, which is a highly inefficient way of making it.
603.
by lutorm 8y ago
Well, it also comes from dissolving years of gasoline deposits, if you've been using non-ethanol gas before. Ethanol is a very effective cleaner.
604.
by lutorm 8y ago
The problem is not with the ethanol. It's with the corn.
605.
by lutorm 8y ago
It takes more than a gallon of gasoline to produce a gallon of gasoline, too. Anything less would be amazing.
606.
by lutorm 8y ago
"The decrease in gas mileage is not worth it" That statement presumes that you know what ethanol-free gasoline would cost. It is often possible to find ethanol-free gas if you look for it, but at least here in HI it is substantial
607.
by lutorm 8y ago
There are also cold-starting issues when running very high ethanol fractions.
608.
by lutorm 8y ago
The NTSB is in the business of determining causes of accidents, though, not of assigning blame and certainly not of assigning criminal liability.
609.
by lutorm 8y ago
"when was the last time you (of the royal variety) actually stopped what you were doing, focused on the briefing, and made a mental note of the plane's safety features?" Every. Single. Time. I fly. I'm a pilot, and I k
610.
by lutorm 8y ago
I agree that the definition of "evidence" they use isn't obvious, and I'm not at all familiar with where the rules for cabin electronics come from. I'm not saying they can't do it, they obviously can (and jus
611.
by lutorm 8y ago
Ah, interesting. That's nose-up, which is the opposite direction of what we're talking here, and seems to indicate that it is the combination of max thrust at low airspeed and large nose-up trim that exceeds the elevator authority
612.
by lutorm 8y ago
Yes, that's the present problem. I'm referring to the inherent instability issue that was alluded to. The stick pusher / MCAS is designed to prevent the plane from getting into a state where it's unrecoverable.
613.
by lutorm 8y ago
As I understand it, this effect is only noticeable at very high angles of attack, and is not present in normal flight regimes. (Which is why the MCAS system only activates near the stall.) Having an unrecoverable stall mode is not a desirab
614.
by lutorm 8y ago
I believe that the FAA has a strong tradition of acting on evidence , not presumption. It's the flight certification equivalent of "innocent until proven guilty" (although they usually operate at a much lower level of proof
615.
by lutorm 8y ago
Even if this is true (which I suspect it's not, I think being able to override trim in all positions is a certification requirement, but I could be wrong), disabling the trim just disables automatic trim. It's still possible for
616.
by lutorm 8y ago
The relevance of the metric depends on what you're using it for. If you decide whether to drive or fly to a destination based on how safe it is, risk/distance is a perfectly reasonable metric. Since flying is a means of transporta
617.
by lutorm 8y ago
World CO2 emissions last year was ~ 37Gigatons of carbon. A F9 launch uses of order 100 tons of RP1, so global emissions correspond to about 370 million launches...
618.
by lutorm 8y ago
The problem is that, unlike ships, they're generally not designed to be water proof. It's not the exterior that's the problem.
619.
by lutorm 8y ago
Planes already have a problem with GPS outages or military jamming exercises. Imagine if all cars within a 100 mile radius all of a sudden would stop working.
620.
by lutorm 8y ago
Yes, this is just a special case of the fact that when you look at something N light years away, you're seeing the object as it was N years ago. You're always seeing the past, never the present! Most of the time in everyday life
621.
by lutorm 8y ago
It does very much matter which direction the black hole is moving; it needs to be moving toward you or you won't get any blueshifting effect, which is the entire reason the energy budget works out.
622.
by lutorm 8y ago
The idea in the paper is to put up a big solar panel. Simply by absorbing the light, you are propelled. And you use the energy in the light, which is more than the energy you used to send it, to send more light.
623.
by lutorm 8y ago
I would think circular definitions would be just as unacceptable with words.
624.
by lutorm 8y ago
Ah, I misread the question. Thanks.
625.
by lutorm 8y ago
Doesn't Goedel's incompleteness theorems imply that it is impossible to define all words using words, unless you have some axiomatic words that are not defined within the system?
626.
by lutorm 8y ago
It doesn't matter how high the price on CO2 is if you can't capture 1 unit of CO2 without emitting >1 unit. There's no guarantee that such a technology exists.
627.
by lutorm 8y ago
By the nature of their jobs, teachers often teach the same 1 year 15 times...
628.
by lutorm 8y ago
There's redistribution going on in the U.S. today, but not by force, by wealth and influence. Do you think that's less unfair?
629.
by lutorm 8y ago
There are existing rules for transporting hazardous materials by air. I don't know if those rules are general enough to also encompass unmanned aircraft.
630.
by lutorm 8y ago
The US uses overhead wires everywhere, because it's cheaper to install than underground wires. But then you're subject to damage from trees, wind, icing, etc. Everyone pays in worse uptime, and apparently also in fire risk.

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