On Monday 01 March 2004 18:19, Andy Ross wrote:
> There shouldn't be anything really weird about a paraglider. The big
> differences from airplane behavior are due to funny mass distribution:
> the engine acts near the c.g., but the lift and drag are rather high
> above it. My guess this is the source of the original complaint. In
> a YASim model, you could try playing with ballast tags to move the
> default weight distribution around.
I will have a look at it, thanks. Do you think YASim is better for this
purpose? I would think so, since as far as I understand it uses the shape of
the wing to calculate lift and drag.
> This holds so long as the parachute stays inflated. Handling the
> non-rigid behavior of a flopping chute is going to be hard, but that's
> more of a failure mode than a flight simulation issue. :)
Not necessarily. Controlled deflation is used as a way of controling the
glider. Wingtip collapses ("big ears") reduce the glide ratio, which can be
useful for landings, and B-stall allows you to descend vertically in a
controlled manner.
If I have full programming control of the wing shape, then "big ears" can be
at least partially simulated. The drag effect of the collapsed wing tips
would be difficult, of course.
best regards,
--
Gunnstein Lye
Systems engineer
[EMAIL PROTECTED] | eZ systems | ez.no
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