lifewithoutanet 0 #1 April 14, 2006 Does anyone happen to know the cfm of fine mesh (nylon marquisette or high drag netting) used in pilot-chutes, fine-mesh sliders and vented BASE PCs? I expect it to be high, but am looking to relate this to the 0-3 cfm of F111 and just can't seem to find a figure. Thanks. -C. Quote Share this post Link to post Share on other sites
hunters 0 #2 April 14, 2006 nylon mil-c-266643 is listed as 1500/1800 cfm per sq ft of cloth Quote Share this post Link to post Share on other sites
FrogNog 1 #3 April 14, 2006 Quotenylon mil-c-266643 is listed as 1500/1800 cfm per sq ft of cloth Is this value with a differential pressure of one inch of water? (As I understand the F-111 "0-3 cfm" number we throw about is.) -=-=-=-=- Pull. Quote Share this post Link to post Share on other sites
hunters 0 #4 April 16, 2006 I pulled that from Poynter's , I don't see any info as to which test was done. Quote Share this post Link to post Share on other sites
mark 102 #5 April 17, 2006 QuoteIs this value with a differential pressure of one inch of water? (As I understand the F-111 "0-3 cfm" number we throw about is.) IIRC, ASTM-D-737 calls for 0.5" H2O, about 1.25 mB. That would be for F-111, too. Mark Quote Share this post Link to post Share on other sites
FrogNog 1 #6 April 18, 2006 QuoteQuoteIs this value with a differential pressure of one inch of water? (As I understand the F-111 "0-3 cfm" number we throw about is.) IIRC, ASTM-D-737 calls for 0.5" H2O, about 1.25 mB. That would be for F-111, too. Mark OK. I know 0.5" of water is a (or perhaps "the") air flow rate standard, but I swear I thought I saw 1" used for some parachute stuff. It would be nice if all CFM numbers we ever run into in skydiving were 0.5" of water so nobody ever needs to ask, but I'm not ready to make any such assumptions. Especially not when "milspec" comes into play; I tend to assume anything could be a variable at that point. -=-=-=-=- Pull. Quote Share this post Link to post Share on other sites
