Helicopter on a turntable

[cantaloup63]

Here's a variation then - a helicopter on a light (zero mass) freewheeling turntable. Engine starts up. Does it ever get to take off or does the turntable just spin in the opposite rotational direction due to the equal but opposite force being exerted my the rotor onto the fuselage and hence the turntable?

 

[Blasphemous]

It takes off obviously.

 

[cantaloup63]

No it wouldn't

 

[imamartian]

Here's a variation then - a helicopter on a light (zero mass) freewheeling turntable. Engine starts up. Does it ever get to take off or does the turntable just spin in the opposite rotational direction due to the equal but opposite force being exerted my the rotor onto the fuselage and hence the turntable?

you've been nothing more than a nuisance, or an irritant on this site since you got here......until now!!!!! what an amazing thread... i love it !!!! you are now a genius... thank you!!

will it take off? of course it will, but it will also be unable to !!

 

[Blasphemous]

what an amazing thread... i love it !!!! you are now a genius... thank you!!

I hear Premier Inn are doing a special deal... you two could get a room for £19 a night.

 

[cantaloup63]

There are two separate scenarios - one with the tail rotor and the other without. Consider the one without, then this will be identical to you standing at the pivot point of the roundabout and swinging your arms one way, which will create and equal and opposite force which whill turn the turntable the other.

 

[cantaloup63]

what an amazing thread... i love it !!!! you are now a genius... thank you!!

I hear Premier Inn are doing a special deal... you two could get a room for £19 a night.

Purdy lodge on the A1 near Bamburgh/Belford turnoff?

 

[imamartian]

what an amazing thread... i love it !!!! you are now a genius... thank you!!

I hear Premier Inn are doing a special deal... you two could get a room for £19 a night.

what do you take me for?!! i don't know this fool !!! she could be anyone ffs !!!

 

[imamartian]

what an amazing thread... i love it !!!! you are now a genius... thank you!!

I hear Premier Inn are doing a special deal... you two could get a room for £19 a night.

Purdy lodge on the A1 near Bamburgh/Belford turnoff?

yep turnoff !!!

 

[cantaloup63]

what do you take me for?!! i don't know this fool !!! she could be anyone ffs !!!

Didn't think you were that fussy

 

[imamartian]

what do you take me for?!! i don't know this fool !!! she could be anyone ffs !!!

Didn't think you were that fussy

yep, i am definitely that fussy !!!

 

[cantaloup63]

Anyway - to topic. I still reckon that takeoff may be a problem

 

[Inky Pete]

Without a tail rotor an ordinary helicopter can't fly anyway!

With a tail rotor the turntable won't spin and the helicopter will take off just the same as on solid ground.

 

[cantaloup63]

Without a tail rotor an ordinary helicopter can't fly anyway!

With a tail rotor the turntable won't spin and the helicopter will take off just the same as on solid ground.

Did I mention that the whole system is in a vacuum?

Ah well, it was a quicky which got us off the blooming treadmill for a couple of minutes

 

[LastMagicBean]

Has it really come to this.????