>>> If a commerical jet kept climing up, would it go into space?
No it wouldnt.
>>>At what point would it stop climing and what would happen.
It would stop at some point where the plane's engines dont have enough oxygen for the engines to run. This varies by aircraft performance etc. between 35,000 and 70,000
>>>Also, if a say a 737 is half full, would go any quicker.
Yes, to varying extents. The top speed of an aircraft is mostly about aerodynamics and not wieght. A lighter plane will have slightly increased maximum airspeed (physics). Wieght would most drastically affect acceleration. That is, if ANY plane is lighter it would climb faster, and reach top speed faster.
>>>Also, can a commerical jet fly upside down- just like in that movies.
There are pilots who boast that almost ANY modern airplane can be flown upside down at least momentarily. I've heard that its possible to barrel roll even a 737! Technique is the key. Maintaining positive G's at all points in the manuever. Structural failure is very likely to occur if technique is even slightly flawed.The airplane is CAPABLE of it but not designed to do it. In these cases, Inverted flight CANNOT be safely sustained...
I have actually SEEN someone do a loop and a roll in an mid sized airplane NOT certified for aerobatics.
2007-12-17 03:38:35
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answer #1
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answered by stingjam 6
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The two examples you chose were totally different. The clue to the answer to your question lies in the word AIRcraft. Your average aircraft uses air i two ways. One, it provides the oxidiser (namely oxygen) to burn its fuel, thus providing energy for flight. Two, by exploiting the flow of the air over the wings and control surfaces, the aircraft generates lift and attitudinal/directional control. Both those essentials are absent in deep space. That wasn't a problem for the X-15, because it wasn't purely an aircraft. It was really a very early predecessor and primitive ancestor of the space shuttle. It could fly lie an aircraft (although not terribly well), BUT - it also carried its own oxidiser,a nd it had other forms of attitude control. The Blackbirg is a real aircraft, with the problems other aicraft have when there's no air around. It couldn't manage. So how did the X-15 manage? First of all, it was a rocket, not a jet. Although different X-15s used differnt fuel, they all carried liquid oxygen as the oxidiser for the reaction. They did not have to rely on air to burn their fuel. Also, once they were sufficiently high above the surface of the earth for there to be not enough air to provide attitude control, they used hydrogen-peroxide-powered thrusters - just like the small attitude thrusters on subsequent spacecraft, including the shuttles. To go back to your question, then, yes, something would go wrong in an aircraft as such ventured out into space. First, the engines would go out for lack of oxygen. Second, the aircraft would tumble randomly, because the pilot would have no control over which way the aircraft was pointing.
2016-05-24 08:26:11
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answer #2
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answered by ? 3
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It wouldnt go into space because as the jet climbs the engines loose thrust due to the thinner air and the jet will stall and fall back to Earth with the pilot regaining control after about 10-15000ft dive. This would happen about 50000ft for any normal jet though Concorde would routinely exceed 60000ft.
The lighter a jet is the faster it can go for a given thrust but it would be marginal.
An airliner can theoretically fly upside down just like a fighter. Trouble lies in getting upside down. The roll rate is so slow that you lose thousands of feet in the roll because you cant balance a large jet on the rudder and stick.
So it can physically fly upside down, its simply very difficult to get a jet upside down in the first place.
2007-12-17 11:03:31
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answer #3
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answered by futuretopgun101 5
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Commercial jets have to be certified to the same aerodynamic pressures you would need to loop. Sustaining inverted flight would be impossible due to the jet engine, but you could feasibly loop.
Increasing an aircrafts weight reduces its performance at lower speeds, but increases it at higher speeds. Technically, although the aircraft would accelerate and climb slower, in level flight, you could get to a destination faster. Practically though, the jet would climb to its best altitude faster, and finish the journey a lot quicker with less wait. Only if you measured from point to point at the same altitude would the full 737 go faster
A commercial jet would not be able to climb past a certain height, this is either because its performance dwindles as it climbs, until its climb rate hits 0, or because the jet engines would flame out. If you tried to climb any further, you would lose airspeed and thus stall, and lose a good few thousand feet recovering.
2007-12-17 05:43:30
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answer #4
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answered by Ryan P 2
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Airplanes are limited in the altitude to which they can climb by the decreasing density of the air with increasing altitude. As the air becomes less dense, engines produce less power and wings produce less lift, until a point is reached at which the airplane cannot climb any further. This altitude is called the "ceiling" for a particular aircraft type.
The ceilings for jet airliners are in the range of 40,000 to 45,000 feet above sea level.
Space, by definition, is above 300,000 feet or so. Airliners never get much higher than 1/10 that high or thereabouts.
So the answer is NO. Commercial airplanes have nothing to do with space travel.
Second: loading affects the performance of any airplane. A less-than-fully-loaded airliner will climb to a given altitude in less time, burn less fuel, and be easier to handle. The effect on speed is minimal, as most airliners are designed to fly close to their maximum cruise speeds most of the time at any loading.
Third: There is a rumor that one captain once successfully did a barrel roll in a 747-300. Nobody anybody knows actually saw this happen, so who knows? It's a "cousin's wife's sister's plumber's housekeeper saw it with her own eyes" type of thing.
Airliners are extremely rugged, and it is hard to break one, but they are not designed for aerobatic flight. Any civilian jet engine would quit running in inverted flight, and it would be really risky to re-start them.
So in practical terms, no. Airliners don't fly upside down, and no pilot in his/her right mind would attempt it.
EDIT: I see the "mad thumbs-downer" is out tonight!
EDIT: Thanks, t1c. I remember the story of Tex Johnson doing a roll in a 707. I had never seen pictures or film, but remember that he was told "that's good--don't do it again."
The Boeing 747 is a wonderful airplane and there is no airplane that will do more to inspire pilot confidence. Those film clips are great.
2007-12-17 03:37:13
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answer #5
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answered by aviophage 7
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With all due respect,storm,Concorde flew at nearer 70,000ft.
No aircraft,civil or military can fly above the stratosphere,the atmosphere is insufficently dense to provide the required lift.
Possibly the highest flying aircraft in service is the Mikoyan_Gurevich MiG-25 with a ceiling of 67,915 ft.
The Lockheed U-2 has a reported ceiling of 90,000 feet,but is classified as a reconnaissance vehicle.
2007-12-17 03:11:14
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answer #6
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answered by Woody 6
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I think aviophag has it right on the space part, but the upside down has been done. In case the below link doesn't work, go to YouTube and type in "707 roll" in the search. I am sure that 99% of the stories out there are false, but it has been done at least once.
2007-12-17 07:48:55
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answer #7
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answered by t1c_tak_tow 2
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A commercial aircraft can not reach space because
1. It is not equipped with the engine to help it overcome gravity.
Spaceships can overcome the earth's gravity since they are powerful enough to reach the escape velocity.
Escape velocity is the speed needed to break free from a gravitational field.
2. Commercial aircrafts fly in the troposphere and stratosphere at a height of 10,000 meters or more.
Space beginns at a height of 500,000 metres. (or 500 kms).
Mind you, that in the stratosphere/troposhere, temperatures are below zero, but the higher you travel towards the other spheres to reach space, the warmer it gets!! It can get up to +726 celcius, which could be fatal for commercial aircraft.
I dont believe an aircraft can travel faster half full, it has to do with its engines, not with its load.
About travelling upside down, well, i sure wish it cant!!! If it could, wouldnt it have been equipped with other sort of seat belts than the usual ones??
Hope this helped you. Congrats for your question.
2007-12-17 03:57:34
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answer #8
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answered by sehn71 3
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Commercial aircraft cant even get close to space. They use jet engines to fly, which use air as a source of fuel! At a certain height, their just isnt enough air!!!
2007-12-17 02:52:04
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answer #9
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answered by Anonymous
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No, the jet engines require air to work and there is none in space.
By the way storm, concorde got higher than 7000 feet, lots of aircraft do, infact people sky dive from higher altitudes!!!!!
2007-12-17 03:11:55
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answer #10
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answered by Petero 6
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