Tad2
Member
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stoker wrote: Tad2 wrote: stoker wrote: Tad2 wrote: fudge84 wrote: Tad2 wrote:
No, you can chock the wheels and open the throttle wide open but the plane will not move an inch! The turbine engines must have motion before their propulsion starts to take effect! That's why you sometimes see the motorized vehicles pulling or pushing planes around an airport.
Did not want to get involved in this discussion but this was your statement. So the way I see it is that once you pull the wheel chocks, you must give the plane a push before it will move.(according to your statement) Are you sure that you are not a politician, cause you avoided answering this question by changing the way it was worded or the subject multiple times.
No. When you pull the chocks this allows the jet engines to cause the aircraft to attain some motion (although it will initially be slow). It does not have to be pushed, just not be chocked. The aircraft can taxi to the runway under it's own power because it has gained motion and is using the thrust of it's engines for movement.
Once the airliner is out on the runway, full throttle applied, brakes released, motion started, the plane will proceed down the runway until the aircraft is airborne.
Motorized vehicles pull and push the aircraft around because they are so large and require so much fuel to manuver on the ground. They can be moved more quickly, safely, and efficently by a motorized vehicle on the ground.
No, I am not a politician, you couldn't pay me enough to be as big a liar as that profession requires!
Your argument still is lacking TAD2. That wasn't your original statement or statements as it were. Sounds like a politician to me. What I meant was.....what is your definition of "is" is?.
If you want come on over the house and bring the beer and the son-in-law or the son, (whichever is the pilot). We can discuss this here or where ever you may feel more comfortable, as this will probably take most of the day if not more. All I ask is don't drink too much of the beer. I will provide the paper, pencils, erasers and calculator ( I would imagine a slide rule is out of the question, but if you prefer ) or whatever is required to explain it.
Once the pilot releases the brakes, the plane takes off (slowly at first) untill the jet engines gives it enough propulsion to lift off the ground.
What is so hard to understand about this? I asked it once, and I will ask it again, what happens if the pilot does not release the brakes upon throttling up his engines? Does the plane rip the brakes out and take off anyway?
by the way, I don't drink any kind of alcohol any more, it's bad for your health.
If the pilot does not release the brakes he will either burn out the brakes or waste a boatload of gas sitting there. That was not however your original argument. You basically were putting forth the concept that a jet engine would not achieve forward momentum without outside assistance.
Well as for the beer, If you don't drink thats a plus for you and more for me. As for my health, after agent orange, asbestos, nicotine, caffeine, lousy diet, sleep deprivation and Parkinson's, a beer or two probably isn't going to have that much of an impact in the overall scheme of things, but I do thank you for your concern. Also I notice that you stated "I don't drink any kind of alcohol any more", so I'll take your advise into consideration keeping in mind that you are reformed.
As for the physics of this whole discussion, your navy instructor was only telling you a part of what applied to the situation as it was being taught. If you are going to argue physics, be aware of who you are holding the discussion with, be well versed in the topic and be ready to apply the logic to where it is applicable and be aware of the situations that it may or may not apply.
Have a great day twidget. Fair winds and following seas!
That depends on what you mean by reformed. I quit drinking over three years ago due to a health problem I still have a drink every now and then, but not like before. Alcohol, nicotine, and all that other good stuff will kill you!
I still stand by my statement that a jet engine cannot move an aircraft from a stationary position with the wheels chocked, and unless you can provide me with some documentation to the contrary, I will continue to believe that way.
If you're saying a jet can move from a chocked position on its own, how could the engines be tested at the factory without running away? Surely with your wealth of information and your expertise on the subject you can answer this? If the engine is bolted down in the plant for testing, what makes it any different that the plane being chocked on the runway? Both situations render the engine unmovable of its own accord. It must have some external movement either from its own thrust or that of an outside source in order to move. Period. I don't understand why you can't comprehend this principle with all the knowledge you seem to possess on the subject!
My instructor was one of a kind. He was absolutely one of the smartest people I have ever had the pleasure of being taugh by. Many years have gone by since that class, but I still remember his explanation and it still sounds feasible.
By the way, what was your rating in the Navy? I was exposed to Agent Orange too!
[size="It is better to be silent and called a fool than to speak and remove all doubt"]
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