Why is airplane while flying in the air looks so slow to passenger ?
354266
The farther the distance from the object (or ground), the slower you seem to be passing it.
821350
Think of it this way:  Once the plane is off the ground it is part of a mass of air that is likely moving in some direction (think wind).  The airplane moves through this mass of air at a constant velocity depending upon the power setting, load factors, etc.  The speed of the airplane is independent of the speed of the air mass.  The speed of the airplane over the ground consists of its speed in the air plus or minus the speed of the air mass over the ground adjusted for the direction the airplane is moving in relationship to the speed and direction the air mass is moving. \n\nA couple of examples might help.  Suppose that the airplane flies at 200 knots (about 230mph).  It is heading due east.  The airmass is also moving due east at 30 knots.  So, the ground speed of the airplane is 230 knots.  If the airplane were heading northeast then the ground speed would be 200 knots of air speed plus 21 knots (NE component of an air mass moving at 30 knots due east).  If it were heading due west then the ground speed would be 170 knots (200-30).\n\nWhat if it were heading directly to a spot 200 nautical miles to the north?  It would take slightly over an hour to get there.  Why?  Because to get to a spot due north on the ground the airplane would have to head west a bit to keep from going east of the spot it was flying to because the air mass was moving east.  In fact, it would take about 61 minutes and the airplane would have to head about 9 degrees west of north to keep from moving east.  The moving air mass would keep it on the north-south line between the starting point and destination.\n\nGot it?
241090
it is the period of flying hour times used betwen aircraft servicing. think of it like a car having a 60000 mile service.
107381
I agree, your English is poor but I think you are asking:\n\nWhen flying in aeroplane, how much pressure is outside? \n\nThe exact outside pressure will depend on the altitude at which you are flying. At a common cruising altitude of  37,000 feet, the outside air pressure is about 3.2 psi. At sea level it is 14.7 psi.  \n\nWhy does it sometimes shake?\n\nFlying in an airplane through air is just like riding in a car along a bumpy dirt road or a ship across choppy open water. The air, while invisible, is very much like an ocean and is always in motion while the aircraft moves through it. The more turbulent the air mass, the more the plane will bouce or shake as it passes through it. At high speeds the air takes on fluid like properties around an aircraft. The oceans are not always calm and glassy and neither is the air which is a constant mass in motion. Just like a journey on the seas or a country road, you cannot always expect your journey to be completely smooth.
1077367
An aircraft flies due to aerodynamic reactions that happen when there is relative motion between air and a wing.\n\nIf a cross-section of a typical aircraft wing is viewed, the top of the wing can be seen to be curved downwards, while the bottom of the wing is less curved or straight, but angled to the airflow. This shape, called an airfoil or aerofoil, creates lift when it travels through the air. However, this optimisation is not applicable for aerobatic aircraft, which need to fly inverted, or for supersonic aircraft.\n\nLift is created as an airstream passes by something which deflects it. The force created by this deflection of the air creates an equal and opposite force on the wing according to Newton's third law of motion. The deflection of airflow downward during the creation of lift is known as downwash.\n\nNearly any shape will produce lift if curved or tilted with respect to the air flow direction. However, most shapes will be very inefficient and create too much drag. One of the primary goals of wing design is to devise a shape that produces the most lift while producing the least lift-induced drag.
359184
There is no wind.  The conveyor belt isn't moving air to cause lift.  Just because the conveyor belt is moving the plane's wheels doesn't mean it will fly..   Point the plane the other way and it will.
145524
they go faster over a slop and bumpy things (from what i've heard) and they go slower on very flat and wet surfaces.\nhope i helped!:)
925349
You'd see a lot of sh*t flying!
943222
Only if the plane has engines with sufficient thrust to hold it up against gravity, and it orients itself engines-facing-down to hold itself there -- the most recent jet fighter for the US Air Force can do this, as well as some "jumper jets", but not any other planes and certainly not any commercial airliners can.\n\nRelative to the ground, a plane can be "still" if the wind speed aloft is above the plane's stall speed.  In that case, air is moving across the wings of the plane at a fast enough speed to give enough lift to keep the plane aloft even though it doesn't move relative to the ground (the thrust from the engines and the "headwind" balance each other out).\n\nYou can get a good sense of this if you fly a lot between the pacific coast of the US and Asia -- the strong jetstream across the pacific does funny things to "ground" speed.  When flying west to east (with the jet stream), indicated ground speed on flights I've been on has exceeded 1,000 MPH, even though the plane can't go more than 400 MPH or so with no wind.  And flying east to west, indicated air speed will sometimes be as low as 50-60 MPH, even though airspeed is still 400MPH -- that headwind jetstream is a killer, and significantly lengthens the time it takes to get from LA to Tokyo (the normal 11-hour flight once took us 16 hours because of the headwind!) -- though I've made the return trip in under 7 hours!
395913
There are pilots on the ground.  They fly by remote control.  Read more about it below.\n\nVery, very few can fly without some human intervention.
1153025
Bart,\nGood question bro, and the answer is fairly simple. As an aviator I've been from ground level to 35,000 ft and the reason why the horizon appears to be at eye level is something called 'Line of Sight'.\n\nThe earth is curved right? Well - to truly get a glimpse of the earths curvature your going to have to be well into the Stratosphere to notice that the horizon begins to go below your line of sight at those altitudes. Anything below that, the curve of the earth is going to intercept the angle at which you view it, and appear to be level at your level (the point where the earth's curve is in your 'Line of Sight'.\n\nHope this helped bro, take it easy out there.
439775
The plane is actually following the curvature of the earth, which only seems to look straight - exactly the way ships do.\nIF it would follow a geometrical straight line, it would actually increase altitude, leaving the sphere of the atmosphere, and make it look like a perpetuous climb (gain of altitude) to a LOCAL observer ...\nBut the so cold level-flight, is a question of keeping altitude, or keeping touch with a certain air pressure, which means a constant distance to the earths center of gravity, making the path a curve...\nSo, a plane is not flying a straight line - strict geometrically (and GLOBAL) speaking!
1044571
Well, A plane's speed is way too low to leave Earth's atmosphere.  For something to orbit around the Earth, it would have to move at speeds of at least 40000 km/h or MACH 40, the fastest airplanes have only went at MACH 4.  Now a plane can fly because it uses the atmosphere to lift it up.  But once it gets higher and higher, the atmosphere becomes too light to lift the plane up so there will be a certain altitude when the altitude levels off and the plane will no longer climb.
123066
Because there is no air, yet at the same time they need to hit the air so they can get lift for a soft landing.  The problem is that the air that does exist at such high altitudes is so sparse that it doesn't have the density to provide the lift, so it ends up hitting the craft at a super fast speed which heats it up.  Eventually however, the air is dense enough to provide the lift that it needs.
512696
My guess is you are talking about being able to see the flashing lights of a plane at night but cant hear it. Or seeing a high plane with contrails during the day but cant hear that either. Light travels 186,282 mps while sound is only 1100 feet per second. So you see something your mind knows is making noise, but cant hear it because of the distance. Now if the sound has not dispersed through the air by the time it gets to you, then you hear it, but since you cant see what is making it, you dont realize it.
214499
It all has to do with altitude. The higher you are from the earth, the colder it gets. Air is also thinner.
323003
For most people, they only look that way under certain conditions: in a movie or video recording, or at night under certain types of lights.\n   This effect is called aliasing, where one does not observe a continuous picture, but lots of snapshots at regular instances of time.  In movies or video, this occurs at the frame rate of the camera.  Under certain lights like Sodium lamps (and incandescents to a lesser degree), their brightness varies with the 50 or 60 HZ frequency of the AC power supplied to them.  This has the effect of also time-sampling the scene, to some degree, just like a strobe light freezes a moving scene. \n    Consider, for example, if the wheel has a regular pattern of spokes, and it is captured in a 30 frame per second movie.  If the speed of the wheel is just right so that the wheel rotates 1 spoke distance in the 1/30th of a second interval between frames, then in each frame the wheel will look the same.  Thus, in the movie, the wheel will appear to be still.  If the wheel speeds up just slightly from this rate, the spokes will appear in each frame just slightly ahead of the last (although you are really looking at a different spoke in each frame), and the wheel will appear to turn forward very slowly.  If the wheel slows down from this rate, the wheel will appear to turn backwards very slowly.\n   This effect is generally not observed in direct sunlight, but the wheel will appear as a continuous blur.  However, because it is a blur, the eye is quite sensititve to even very faint aliasing effects which allow the brain to perceive some stucture there.  Such faint aliasing can come from a variety of unexpected sources, such as the slight increase/decreases in ambient light level as a car drives beside a guardrail with a regular spacing of posts.  Near each post, the light will be slightly brighter or darker from the reflections or shadows of light off the post.  This will give a regular time varying brightness in the car's frame of reference, which may cause a faint aliasing pattern to become visible.