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jumper03

Sorry....another wingloading question

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This question was brought about by another thread in the gear and rigging forum about the actual size of the PD176r being 188 sqft. So, if we have a jumper that is 160 with 15 lbs. of gear - are they loading the reserve at 1.00 or at 0.93?

Similarly, are most canopies larger than the reported size? Or smaller? I know different manuf. measure differently but is this enough that the wingloading could be off as we compute it?

Thanks
Jump
Scars remind us that the past is real

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Wingloading is the total canpoy area divided by the suspended weight. The way that manufacturers measure canopy area does vary greatly. I would use the smaller of the 2 numbers, therefore being more conservative (creating higher) wingloading. PD reserves are usually larger than stated on the data panel. Icarus canopies are usually smaller. It just depends on how they measure. It can be off enough to significantly affect the calculation.

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Wingloading is the total canpoy area divided by the suspended weight.



I thought it was the other way round, total suspended weight divided by canopy area, i.e. jumper A weighs 300lb fully kitted up, and jumps a 150, therefore he is loading it 2:1. Am I right here?

Nick
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Wingloading is the total canpoy area divided by the suspended weight.



I thought it was the other way round, total suspended weight divided by canopy area, i.e. jumper A weighs 300lb fully kitted up, and jumps a 150, therefore he is loading it 2:1. Am I right here?



You are correct sir

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