> > Up to a 15% (of total area) spill hole the desent rate will not decline
> > much but the drift dispersion will. Above that it might. The more common
> > and sensible method is to "***up" the chute by "reefing the shrouds"
> > and placing a piece of tape about halfway up the shrouds.
> It's a bit out of my knowledge base, but Dave Fox (MBR) gave me a
> severe lashing for telling this to someone once. If I recall correctly (I
> usually try to forget things like lashings, at least of me), he said that
> a spill hole will reduce the oscillation (driven by air dumping out
> around the perimeter), but can actually increase the lift, and
> correspondingly the drift!
In fact my personal experience is that with a spill hole the drift is
reduced. However this might be offset by the fact that on a warm breezy
day lift and thermal catching is increased.
> A better solution would be to go to an X-Form chute. From the
> ones I've seen, and the couple I use, it is amazing how they come
> almost straight down in breezy conditions.
Included in alot of U.S. Rockets kits! I believe the first manufacturer to
widely include them.
> |Andrew Sanders | Mind like a steel trap. Old, |
So I guess I will be slightly less severely lashed than you were.
Box 1242, Claremont, CA 91711 USA
Opinion, the whole thing.