Bottom wall of reserve container on Javelin

[alexey 6]

If they make closing loop on reserve the same - how do they scaling container?
Only by changing length and width (to hold triangle proportion the same)?
Or, I miss something on my geometry lessons in school?

Lexa

[Samurai136 0]

Sunpath has a recommended length for the reserve closing loop. It is up to the rigger to adjust that length for a properly closed container. In addition, the pilot-chute is the same size no matter what size container/reserve is being packed. Sunpath uses a molar bag which takes a final shape that is very different from a "wedged" triangle. The material ends up placed mostly to the bottom and the right/left ears of the container.


Since there is never any parachute material directly under the base of the reserve PC spring the reserve loop length will tend to stay the same length because the PC is the same size on every container.

Ken

"Buttons aren't toys." - Trillian
Ken

[alexey 6]

I know that...

Just for my education, i'd like to ask -
how do the scaling their containers - in what dimension - in width and length, width and height, in width, length and height - but how they keep proportion to have recomended loop for all reserves?

Lexa

[riggerrob 643]

If you want to be picky .....
The tightest Javelins require slightly longer reserve closing loops.
Oddly, it tends to be the smallest Javelins that require the longest loops.

[riggermick 7]

Quote

I know that...

Just for my education, i'd like to ask -
how do the scaling their containers - in what dimension - in width and length, width and height, in width, length and height - but how they keep proportion to have recomended loop for all reserves?

Containers, due to their complexity and the multiple canopy combinations cannot be 1:1 scaled. If they could, every mfg out there would offer as many combinations of container as there combinations of canopys. Container scaling is one of the mysterious "dark arts" that take a long time to learn and an even longer time to master.


Things like riser cover geometry and reserve loop length are generally fixed points of reference. This gives the container designer somthing to build out from and around while trying to stay within the confines of the backpad.

Hope this helps.

Mick.