Helium bubbles used to show bird aerodynamics

On Sat, 21 Mar 2020 18:15:55 -0700, uneekcowgirl wrote:

Thanks Martin, from what I am reading, this type of experimenting can
actually be a lifetime pursuit playing with all of the multiple
variables that combine for success, or that don’t lol.

Yes, this often happens. Many of us started flying models, usually
remarkably badly, at age 10 or so, enjoyed the challenge and stuck with
it. I dropped out in 2000 when the soaring bug bit, but most of the
people I was flying and competing with in the 70s are still flying unless
they've gotten ill or dropped off the perch. I'm thinking I might have a
crack at building and flying FF scale, which don't go nearly as far, when
its time to hang up my parachute.

Competitive FF is a good way of keeping fit. Flying in typical UK
conditions means you can easily cover 10+ miles a day, and that's just
retrieving the model after a flight, so all the galloping round with a
towline model on the line, looking for a thermal, is an extra bit that
the rubber and power guys don't do.


--
Martin | martin at
Gregorie | gregorie dot org