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Andy7:
04 Jul 2020 13:16:48
VIDEO or it didn't happen!! :) Nice going though, keep it up!
Bad Raven:
02 Jul 2020 19:46:48
 ~~
whoelseisbored (LiamHowe89):
02 Jul 2020 17:45:19
Sounds basic but I'm happy with it  :laugh:
whoelseisbored (LiamHowe89):
02 Jul 2020 17:45:05
Managed a split s :D
badger1:
28 Jun 2020 12:29:49
BF GPS Rescue mode configured - what could possibly go wrong?   :o
badger1:
27 Jun 2020 21:07:37
and can't make it back to where you take off from   :laugh:
badger1:
27 Jun 2020 21:07:04
it's too windy if you fly downwind
Bad Raven:
27 Jun 2020 20:51:32
I have done Dynamic Soaring in over 55mph, and quad flying in over 25mph with the right equipment.
whoelseisbored (LiamHowe89):
26 Jun 2020 16:44:24
How windy is too windy? :hmm:
whoelseisbored (LiamHowe89):
25 Jun 2020 22:58:29
YASSSS!! Flew a full 2 packs and no motors going nuts on me!  :D
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3d - Printworx

Printing 3d Forum

Quadcopter in a glass elevator

Started by teslahed, Tuesday,July 31, 2012, 22:21:37

Previous topic - Next topic

teslahed



Can you guess what will happen? I managed it.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Gaza07

Also guessed it right  ~~ its a good test and those guys have some other videos that are worth watching nice find  ~~

BYOD

I didn't guess right..... They left with all fingers, faces, eyes etc. intact!

Great video, I think a sonar unit would stop this from happening!

Regards

Martin.

Gaza07

Your guess just made my morning  :rofl: Good point about the sonar that would have changed the results, but it would be cheating  ::)

Quote from: BYOD on Wednesday,August 01, 2012, 08:20:57
I didn't guess right..... They left with all fingers, faces, eyes etc. intact!

Great video, I think a sonar unit would stop this from happening!

Regards

Martin.

teslahed

They got it slightly wrong (i think) - they ignored air resistance. The quadcopter will go upwards when the lift (elevator for americans) goes up because the rising air bubble trapped in the lift will exert a force on it. This force will be much weaker than the opposition to the change in motion due to the momentum of the quadcoper so the effect is minimal and you see the quadcopter 'fall' downwards when standing in the lift with it rather than being lifted upwards slightly as is actually happening relative to an outside observer.

That's assuming the lift doesn't have a wire mesh ceiling and floor to allow air to pass through.

It's a bit like keeping half your canaries flying in a truck to save on loaded weight - only works if you have a wire mesh roof and floor in your trailer to allow the downdraft to pass through.

That's all assuming i haven't forgotten all the science i learned at school :confused:
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Gaza07

The problem is if the truck driver slams the brakes on and you do have wire mesh then your canaries will end up looking like crinkle cut chips  :rofl:

MadMax

Wasn't really sure what to expect but the explanation makes sense, @byod I could just picture them coming out of the lift all hacked up and saying, that didn't go to well  :rofl: