lutorm

52 ms·

541.
by lutorm 7y ago
My impression is that, at least partly, it's a result of the trim wheel being connected through a very long mechanical linkage to the tail, while the motor is right there. The pilots also don't have great mechanical leverage to tu
542.
by lutorm 7y ago
This isn't true though, it seems perfectly possible to certificate transport-category airplanes with sketchy stall characteristics, since T-tail planes can end up in unrecoverable situations by blanketing the tail in a stall. Twin-engi
543.
by lutorm 7y ago
The engines on the MAX are forward of the CoG, so they are pushing the nose up as you add thrust - exactly what you do not want when approach a stall. MCAS has been added to help with this - to help the crew push the nose down in such situ
544.
by lutorm 7y ago
This is a sobering reminder that keeping something like https://cooltravelstuff.com/product/pocket-smoke-mask/ in your carryon may save your life if you have the misfortune to end up in a situation like this. Ther
545.
by lutorm 7y ago
Starship looks like it does because it has to re-enter Earth's atmosphere. If you don't, aerodynamic shells are just dead weight.
546.
by lutorm 7y ago
That you get paid for fleeting your car?
547.
by lutorm 7y ago
It's my impression that lifetime is mostly efficiency degradation from UV exposure. If that's true, then it seems that if you have fewer solar hours per day, the panel will just retain its efficiency longer until eventually you re
548.
by lutorm 7y ago
* producing solar panels and such also requires energy input, and these do have limited lifetime. What is the real full-cycle energy conversion ratio is? I wonder what this is, too, but a typical 300W panel with 20 year lifespan will genera
549.
by lutorm 7y ago
I'm thinking of something like http://www.absolicon.com/ , concentrating collectors for industrial process heat. Maybe the intermittency is a factor though, you'd need a thermal storage to go along with it.
550.
by lutorm 7y ago
Sure, the energy density is a bit lower, but that's not really what people mean when they talk about "performance". "High-performance cars" don't usually refer to cars that can go a long distance on a tank.
551.
by lutorm 7y ago
This is a cool project! One question though: why is getting rid of thermal processes an improvement? If you're getting electricity from solar, you can get even more thermal energy from solar since the conversion efficiency for capturin
552.
by lutorm 7y ago
Why do you say ethanol degrades performance? Ethanol is an anti-knocking agent when added to gasoline, so it actually enables higher performance.
553.
by lutorm 7y ago
The average price of cars might have risen, but have the average price of a given car segment (size, trim level) really risen? I have the feeling that people are just buying bigger (unnecessarily bigger) cars, and the high trim levels are a
554.
by lutorm 8y ago
The purpose of Tesla is to save the world from global warming, though. I'm not sure self-driving is that relevant compared to the electric propulsion part.
555.
by lutorm 8y ago
That's not really relevant though because people don't stare at a fixed point, they trade time for resolution over a larger area.
556.
by lutorm 8y ago
Education is not a tulip, though.
557.
by lutorm 8y ago
Rather than discharging them in bankrupcy, why not just index the payback according to income?
558.
by lutorm 8y ago
I went to university in Sweden, where there is no tuition for citizens (EU citizens, actually.) I think this is one of the reasons the Scandinavian countries have such high social mobility. Now, that doesn't mean going to university is
559.
by lutorm 8y ago
Yes but having an educated citizenry pays dividends in a multitude of non-economic contexts.
560.
by lutorm 8y ago
Modify your online habits? I just read "The Shallows" and it really brought home to me how the web has altered my attention span.
561.
by lutorm 8y ago
Sure, it's not the same dollars that I pay in that I'll be getting in the future. That doesn't change the fact that these these taxes have to go into the SS trust fund and is not part of the discretionary budget. When people
562.
by lutorm 8y ago
Loss of control during approach and landing because of poor airspeed control kills pilots every year. It's important enough that the EAA has a dedicated "loss of control initiative" to try to figure out what to do. See for ex
563.
by lutorm 8y ago
No, as long as you are pulling positive G's, your angle of attack is positive. It has nothing to do with pitch angle. Edit: Oh you meant flying upside down, not doing a loop? Yeah, negative AoA is not the same as positive AoA. It makes
564.
by lutorm 8y ago
I'm certainly not a medical professional, but my impression is that it's not so much movement as muscle tension that helps. If the muscle just moves without encountering any resistance, it doesn't create nearly as much pressu
565.
by lutorm 8y ago
I don't know anything about HeH, but molecular hydrogen is actually quite hard to form. It's easily dissociated by UV radiation so can't form until a protostar has become concentrated enough so as to be self-shielding. A plan
566.
by lutorm 8y ago
They're called "entitlement" because people explicitly pay into them and then the government has to pay those benefits. That's not relevant if you're talking about the discretionary budget.
567.
by lutorm 8y ago
That all applies to transport aircraft, not to combat aircraft. An F-35 is pretty useless for any of the roles you outlined.
568.
by lutorm 8y ago
Why would I want someone who is not willing or able to get a college degree pilot my $150 million dollar jet? Because very little you learn in college is relevant to whether you can fly those military jets?
569.
by lutorm 8y ago
Replying specifically about the stabilizer lift discussion: What you're saying is true, but the effect of AoA is not huge. Stabilizer lift is a small fraction of main wing lift, because it has a huge leverage. The corresponding effect
570.
by lutorm 8y ago
I think FH acceleration off the pad is slightly higher than F9. Makes sense since there's 3x as much liftoff thrust but generally the liftoff mass is not 3x that of a F9.

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