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Post by geddyleeridesagain on Feb 4, 2017 21:29:40 GMT -5
Isn't that more of a crystal ball question? No I always here stories of how the military, and companies like Boeing have technology that is 10-20 years ahead of commercial applications. He could tell you, but then he'd have to kill you.
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Post by Northern lights on Feb 4, 2017 21:31:38 GMT -5
I want the cool sh-t. Like airplanes with hydrogen engines? Is that a thing?
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Post by mikegarrison on Feb 4, 2017 22:55:18 GMT -5
Isn't that more of a crystal ball question? No I always here stories of how the military, and companies like Boeing have technology that is 10-20 years ahead of commercial applications. And if I knew it, you think I would post about it on a web forum?
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Post by mikegarrison on Feb 4, 2017 22:57:04 GMT -5
I want the cool sh-t. Like airplanes with hydrogen engines? Is that a thing? No, it's not a thing, except for a few demonstration airplanes. Someday, maybe. But there are lots of problems, mainly due to hydrogen being so bulky. The fuel tank would be bigger than the rest of the airplane. Google "cyroplane".
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Post by Wolfgang on Feb 5, 2017 12:39:31 GMT -5
What is the most common technical error on a commercial airplane? I really have no idea what you are asking. This is my line.
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Post by Wolfgang on Feb 5, 2017 12:45:20 GMT -5
1. Are quadcopters more stable than helicopters? You see more and more regular people playing with quadcopter drones now than I've ever seen people play with remote controlled model airplanes. 2. When do you think hovercrafts, like the quadcopters, will become more mainstream and available for commercial flying? 3. If hovercrafts become more mainstream, shouldn't airports need less real estate, since you don't need the long runways for takeoffs and landings? 4. Will hovercrafts ever replace airplanes? Or will the speed of airplanes make them irreplaceable? 5. If hovercrafts take over the industry, would you be out of a job? 6. When you're out of a job, will you be selling flowers by the side of the road? If so, how much and where will you be located. I'll buy some from you on Valentine's Day.
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Post by BearClause on Feb 5, 2017 13:35:20 GMT -5
Is the scene in Die Hard 2 with the fight on the wing accurate where Major Grant gets sucked into the engine and it keeps on running?
I remember my materials science class where the professor was telling us about how engine prototypes were tested to see how they failed by sucking in frozen poultry. Ever attended a test in your line of work?
As far as the hydrogen thing goes, I was told that liquid hydrogen has the highest energy to weight ratio of any chemical liquid fuel, so it's good as a rocket fuel. But I guess it's maybe 12 times less dense than kerosene.
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Post by Northern lights on Feb 5, 2017 14:05:05 GMT -5
That's what I am talking about. Hydrogen powered rocket planes, where every seat has a 5 point harness. When you land a mesh net helps to slow you down, or a drag line like the fighter planes.
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Post by BearClause on Feb 5, 2017 14:26:59 GMT -5
That's what I am talking about. Hydrogen powered rocket planes, where every seat has a 5 point harness. When you land a mesh net helps to slow you down, or a drag line like the fighter planes. I thought the basic issue with space-going rockets is that they need to expend fuel so quickly that they need both liquid hydrogen and liquid oxygen. Mike didn't bring it up, but hydrogen fuel-cell powered propeller-driven planes are more practical. It would really be electric power though. Here's one: www.boeing.com/news/frontiers/archive/2008/may/ts_sf04.pdf
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Post by Deleted on Feb 5, 2017 14:51:15 GMT -5
Bernoulli. What the hell?
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Post by mikegarrison on Feb 5, 2017 19:00:40 GMT -5
As far as the hydrogen thing goes, I was told that liquid hydrogen has the highest energy to weight ratio of any chemical liquid fuel, so it's good as a rocket fuel. But I guess it's maybe 12 times less dense than kerosene. Hydrogen is a wonderful fuel for energy density per mass. It is a suck-ass fuel as far as energy density per volume. Both kinds of energy density are important, especially when you have to push a hole through the air big enough to hold whatever you are transporting and also the fuel required to transport it. And then consider that hydrogen is the smallest molecule. It leaks like crazy, through almost anything. Plus, it embrittles metal. ----- Anything other than air going through an engine is usually a source of FOD (foreign object damage) and can be very, very bad for said engine.
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Post by mikegarrison on Feb 5, 2017 19:01:28 GMT -5
That's what I am talking about. Hydrogen powered rocket planes, where every seat has a 5 point harness. When you land a mesh net helps to slow you down, or a drag line like the fighter planes. I thought the basic issue with space-going rockets is that they need to expend fuel so quickly that they need both liquid hydrogen and liquid oxygen. Mike didn't bring it up, but hydrogen fuel-cell powered propeller-driven planes are more practical. It would really be electric power though. Here's one: www.boeing.com/news/frontiers/archive/2008/may/ts_sf04.pdfTry to fly 300 people from LA to Sydney in that.
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Post by mikegarrison on Feb 5, 2017 19:04:02 GMT -5
1. Are quadcopters more stable than helicopters? You see more and more regular people playing with quadcopter drones now than I've ever seen people play with remote controlled model airplanes. 2. When do you think hovercrafts, like the quadcopters, will become more mainstream and available for commercial flying? 3. If hovercrafts become more mainstream, shouldn't airports need less real estate, since you don't need the long runways for takeoffs and landings? 4. Will hovercrafts ever replace airplanes? Or will the speed of airplanes make them irreplaceable? 5. If hovercrafts take over the industry, would you be out of a job? 6. When you're out of a job, will you be selling flowers by the side of the road? If so, how much and where will you be located. I'll buy some from you on Valentine's Day. Thanks. I'll expect a nice tip though. Because Valentine's Day, you know?
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Post by mikegarrison on Feb 5, 2017 19:05:16 GMT -5
Bernoulli. What the hell? What about him? He's long dead. But I don't believe in Hell, so I doubt he's there.
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Post by Deleted on Feb 5, 2017 19:57:58 GMT -5
He was always the wind beneath my wings. RIP, wherever he is.
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