Altitude loss comparisons?

[rredman 0]

I was wondering if anyone has ever seen a chart, or table, comparing altitude loss during a toggle turn on various canopies at various wing loadings?

thanks,
Ross

[billvon 2,915]

That would be difficult. Weight shift, amount of toggle turn, angle of turn, altitude, and time of toggle pull all influence how much altitude you lose. Why would such a chart be useful, in any case?

[rredman 0]

We are trying to display in very clear terms to students how quickly things change under smaller canopies. I realize that there are a lot of factors involved here. This would be more of a training aid to show students the effect of going to a small canopy. We already do lots of informational type training, telling people that a Sabre 135 will lose altitude much more quickly than the Manta 280, but it would be nice to put in in very graphic terms.

[billvon 2,915]

>We are trying to display in very clear terms to students how quickly things change under smaller canopies.

Perhaps a Neptune could be used to capture descent rate information while a jumper made four ever-more-aggressive turns up high. Afterwards look for the four dips and measure how long it took to resume level flight.

[rredman 0]

Thanks for the idea.. I'll set that up the next time I am at the DZ.

[JohnMitchell 16]

Pilot flight manuals have those charts that show how many G's are pulled for various angles of bank, which extrapolates into increased rates of descent for non-powered flight. It would probably take a lot more calculus than I remember to work it out, but it does give a hint of what's going oon in those radical turns. I wish you all the success in teaching canopy safety to the up and coming jumpers. It's way too dangerous out there these days.

[rredman 0]

Thanks for the encouragement. I am just tired of reading incident reports about things that should not have happened.