Fyling RC helicopter INSIDE a 40 ton truck - what happens?!
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Uploaded by heligraphix on Apr 20, 2009
What happens if you fly a heli in a moving truck?! Quite an interesting experiment!
More cool stuff to come soon, so check back!!
- 28 likes, 2 dislikes
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Uploader Comments (heligraphix)
All Comments (17)
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100% skill right there people's
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That was impressive!! Never seen anything like that before. Now I have seen it all! What heli are you running? Looks like a 450e.
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Incredible reflexes, very cool vid.
Don't try this at home!
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True in theory. When the birds fly and the air can flow "out of the truck", its weight will be reduced. In a boxed truck the situation is somewhat different, because each bird will cause a downwards flow of air with a certain momentum which, in turn, will be reflected off the truck's floor (this means double the impulse acts on the floor; same like with photons reflected off a mirror, remember those school lessons! :-) ).
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Exactly. As long as the truck does not accelerate in any direction (including negative accelerations = braking), no forces act on the heli, thus it will hover stationary. Otherwise, when the truck accerates, it moves while the heli still remains stationary - in the coordiante system of the boxed truck, it then appears the heli was moving. However you want to look at it, in the latter case corrections are necessary.
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now that i think of it, its like throwing up a tennis ball inside of a truck like that.... its not going to fly out the back, so i guess its the lack of wind resistance thats allowing for the helo to stay in place and move with the truck rather than flying out the back
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I wonder if it would have been much different if the back door was closed
TiagoTiagoT 6 months ago
@TiagoTiagoT No, same situation, no significant difference.
heligraphix 5 months ago
@heligraphix Really? I would think th opening would affect the turbulence inside the the truck is moving, and the door would reflect the wind from the rotor. Did you guys try it?
TiagoTiagoT 5 months ago
@TiagoTiagoT This is correct. However, there was lots of turbulence due to the rotor wind already, and any additional effect due to wind reflection from a closed rear door would be minor; this is because (a) the door is further away, and (b) because in between are a chair, 2 persons and a camera which all diffuse the airflow.
The same diminishing effect goes for any air turbulences caused by the open door: It will not reach far into the truck at these speeds. Yes, we did couple test runs.
heligraphix 5 months ago