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Re: Planes take off , off trailer
[Re: FM3AAR]
#2794834
07/09/20 05:01 PM
07/09/20 05:01 PM
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Joined: Aug 2019
Posts: 9,429
Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
Joined: Aug 2019
Posts: 9,429
Super Spudsville
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Dosent take a rocket scientist to know how they commonly get water/only planes airborn where there is no water at times, notice it was a runway it took off from.
STOP POTATO HATE!
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Re: Planes take off , off trailer
[Re: Mr PotatoHead]
#2794860
07/09/20 05:33 PM
07/09/20 05:33 PM
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Joined: Oct 2007
Posts: 3,877
Oregon
hooziewhatsit
master
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master
Joined: Oct 2007
Posts: 3,877
Oregon
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 Of course a plane can take off from a treadmill.  The original question was flawed in that it made the assumption that the treadmill could hold the plane and prevent forward motion. Put a wheelbarrow on a treadmill and observe that no matter how fast you make the treadmill go, you can still move the wheelbarrow forward and back just fine => a plane can take off from a treadmill too 
If you ever find yourself in a fair fight, your tactics suck.
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Re: Planes take off , off trailer
[Re: Mr PotatoHead]
#2794861
07/09/20 05:35 PM
07/09/20 05:35 PM
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Joined: May 2012
Posts: 1,820
South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,820
South Bend
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Take off speed is likely less than 50 mph, so not a great risk involved for the tow truck.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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Re: Planes take off , off trailer
[Re: hooziewhatsit]
#2794866
07/09/20 05:48 PM
07/09/20 05:48 PM
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Joined: Nov 2007
Posts: 21,819
Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,819
Kirkland, Washington
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Of course a plane can take off from a treadmill. The original question was flawed in that it made the assumption that the treadmill could hold the plane and prevent forward motion. Put a wheelbarrow on a treadmill and observe that no matter how fast you make the treadmill go, you can still move the wheelbarrow forward and back just fine => a plane can take off from a treadmill too A planes ability to take off is based on AIRSPEED. Air flowing over the wing creates LIFT. The airspeed can be from the planes forward motion, of from a headwind, or both, but it needs airspeed. Period.
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Re: Planes take off , off trailer
[Re: Pacnorthcuda]
#2794869
07/09/20 05:54 PM
07/09/20 05:54 PM
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Joined: Jan 2003
Posts: 9,110
Tucson, AZ
Ramrod39
My New Title
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My New Title
Joined: Jan 2003
Posts: 9,110
Tucson, AZ
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A planes ability to take off is based on AIRSPEED. Air flowing over the wing creates LIFT. The airspeed can be from the planes forward motion, of from a headwind, or both, but it needs airspeed. Period.
Yep. If the air is move over and under the wings at sufficient speed the plane can fly even if the plane is stationary.
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Re: Planes take off , off trailer
[Re: Pacnorthcuda]
#2794876
07/09/20 06:06 PM
07/09/20 06:06 PM
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Joined: Oct 2007
Posts: 3,877
Oregon
hooziewhatsit
master
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master
Joined: Oct 2007
Posts: 3,877
Oregon
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Of course a plane can take off from a treadmill. The original question was flawed in that it made the assumption that the treadmill could hold the plane and prevent forward motion. Put a wheelbarrow on a treadmill and observe that no matter how fast you make the treadmill go, you can still move the wheelbarrow forward and back just fine => a plane can take off from a treadmill too A planes ability to take off is based on AIRSPEED. Air flowing over the wing creates LIFT. The airspeed can be from the planes forward motion, of from a headwind, or both, but it needs airspeed. Period. Correct! And a treadmill is incapable of preventing a plane from making forward motion or the resulting airspeed, so it then takes off 
If you ever find yourself in a fair fight, your tactics suck.
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Re: Planes take off , off trailer
[Re: poorboy]
#2794966
07/09/20 10:02 PM
07/09/20 10:02 PM
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Joined: Aug 2003
Posts: 43,123
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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I'll bet landing is more impressive then taking off. Exactly how do they land water planes at an airport? Gene Most float planes have retractable wheels in the floats and retractable rudders so they can lift the rudder to use the wheels to land on hard surfaces and lower the rudders and raise the wheels to land on water Same thing on the other type of planes,( amphibieans (SP?) that where designed primarily to land and take off on water, they have wheels in the floats to land and or taxi on hard surfaces when needed
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Planes take off , off trailer
[Re: Mr PotatoHead]
#2795048
07/10/20 08:51 AM
07/10/20 08:51 AM
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Joined: Jun 2004
Posts: 3,372
St. Charles, MO
wingman
Uncreative Title
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Uncreative Title
Joined: Jun 2004
Posts: 3,372
St. Charles, MO
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But was the trailer on a treadmill?
1969 Dodge Coronet Super Bee 383 A4
1970 Plymouth Road Runner 440 FC7 (sold)
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Re: Planes take off , off trailer
[Re: wingman]
#2795085
07/10/20 10:11 AM
07/10/20 10:11 AM
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Joined: Nov 2003
Posts: 2,937
GA
roadrunninMark
master
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master
Joined: Nov 2003
Posts: 2,937
GA
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An airplane will not take off on a treadmill if it is maintaining its position. I will relate this to someone running on a treadmill for comparison sake, since almost everyone has been on a treadmill. If you stand on a treadmill, it will move you backwards. You have to run/walk to at exact the same speed in the opposite direction to maintain your position. If you do this, your upper body is in a stationary position. You do not gain nor lose ground. Step off the treadmill while you are maintaining this speed and you instantly go forward. Stop running/walking and you instantly go backward. There is no airflow around you, since you are in a stationary position. Remember when you were young and stuck your hand out the window of a moving vehicle? You made a “wing shape” with your hand? If you tilted your hand up, it would lift your hand/arm. Opposite if you tilted your hand down. Try this next time you are on a treadmill, no airflow over or under your hand. Without airflow, a plane will not fly.
If you think because the propellor is turning, creating airflow to fly, then just look at the above video. Why would the plane need a truck then to pull it down the runway before it would take off from the platform? Think of the platform being a treadmill and the floats being the legs. It is maintaining its position on the platform, no forward nor backward movement. Even with the propellor turning, the plane still needed a certain speed forward before it reached a speed it could takeoff.
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Re: Planes take off , off trailer
[Re: roadrunninMark]
#2795099
07/10/20 11:06 AM
07/10/20 11:06 AM
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Joined: Oct 2007
Posts: 3,877
Oregon
hooziewhatsit
master
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master
Joined: Oct 2007
Posts: 3,877
Oregon
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An airplane will not take off on a treadmill if it is maintaining its position. I will relate this to someone running on a treadmill for comparison sake, since almost everyone has been on a treadmill. If you stand on a treadmill, it will move you backwards. You have to run/walk to at exact the same speed in the opposite direction to maintain your position. If you do this, your upper body is in a stationary position. You do not gain nor lose ground. Step off the treadmill while you are maintaining this speed and you instantly go forward. Stop running/walking and you instantly go backward. There is no airflow around you, since you are in a stationary position. Remember when you were young and stuck your hand out the window of a moving vehicle? You made a “wing shape” with your hand? If you tilted your hand up, it would lift your hand/arm. Opposite if you tilted your hand down. Try this next time you are on a treadmill, no airflow over or under your hand. Without airflow, a plane will not fly.
If you think because the propellor is turning, creating airflow to fly, then just look at the above video. Why would the plane need a truck then to pull it down the runway before it would take off from the platform? Think of the platform being a treadmill and the floats being the legs. It is maintaining its position on the platform, no forward nor backward movement. Even with the propellor turning, the plane still needed a certain speed forward before it reached a speed it could takeoff. Not quite. In your treadmill example, the forward motion is coming from the person running pushing back on the treadmill. Go back up and look at my wheelbarrow on a treadmill example. It doesn't matter how fast the treadmill is going; you'll still be able to push the wheelbarrow forward on the moving treadmill. The treadmill is incapable of holding it back. Hence, the propeller creates forward motion and airspeed, and it takes off.
If you ever find yourself in a fair fight, your tactics suck.
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