That looks very similar to those toy copters you can buy virtually in any
shops. I guess that mechanical gyro works by the same principal as well. I
have no experience on real helicopters at all, but with these toys what I
have seen is that the mechanical gyro has a huge limitation. Within that it
works great, but if any large vibration attacks the body or the toy tilted
too much it can go unrecoverable. Not sure how big force needed for a real
helicopter, where is that limitation, but I would not try this in a windy
condition for sure.

Tamas



On 8 October 2013 14:30, Carl Denk <cdenk@windstream.net> wrote:

> That entire flight was made in ground effect (1/2 wingspan or rotor
> diameter). That increases the amount of lift available considerably.
> There have been many planes that crashed, short  runway, hot
> temperatures, high altitude. They get off the runway, not able to
> accelerate to a speed sufficient to get enough lift out of ground
> effect. They just fly at a few feet off the ground into trees or
> whatever obstacle is ahead. This probably explains the higher altitude
> instability.
>
> I doubt that this was the actual first flight, but first time spectators
> were there. Helicopters commonly are tethered so they are restrained
> from a foot or 2 off the ground until a little stability is achieved.
> I'm amazed at the safety precautions taken. A blade could have broke or
> on a hard landing struck the tail rotor and there would be knife like
> objects flying all over. Videos of helicopters crashing are far from
> pretty.
>
> But this is quite amazing and they deserve credit.
>
> I have a friend that is taking a small 2 place helicopter kit,
> converting it from piston engine to a turbine. Haven't talked to him for
> a while, don't know his progress, but he did have the turbine and drive
> train mounted.
>
> On 10/8/13 4:16 PM, John Ferrell wrote:
> > Sounded good, minimal vibration, Death grip on the cyclic(I think),
> > right arm tight against his leg with fingers very gentle on the
> > controls, it still was  not solid as the altitude increased. Structure
> > just OK, the man is outstanding!
> > I wonder what the power plant was. If that was fuel in the jugs it did
> > not use much.
> > I have almost given up ever flying even model Heli's.
> >
>
> --
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>



--=20
int main() { char *a,*s,*q; printf(s=3D"int main() { char *a,*s,*q;
printf(s=3D%s%s%s, q=3D%s%s%s%s,s,q,q,a=3D%s%s%s%s,q,q,q,a,a,q); }",
q=3D"\"",s,q,q,a=3D"\\",q,q,q,a,a,q); }
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.