Hello Brian,
I have attached the spreadsheet, a ‘Word’ document of my derivation of the formula and a .jpg of a graph. Please let me know if there are any problems. I am not very methodical and found I had three slightly different variations of the spreadsheet but I think the one I sent works OK. The graph just shews the variation of duration with the ratio of rubber weight to airframe weight. You have probably heard that mathematics says that the rubber weight should be twice the airframe weight for maximum duration but the practicalities of doing that are nearly impossible.
From: Indoor_Construction_at_yahoogroups.com [mailto:Indoor_Construction_at_yahoogroups.com]
Sent: 17 July 2015 00:01
To: Indoor_Construction_at_yahoogroups.com
Subject: [Indoor_Construction] Re: Mass vs flight time
This request is for John Barker:
Could I please also get a copy of the duration equation spreadsheet that you shared with Jeff Anderson? I coach four local high school Science Olympiad Wright Stuff teams in mid-Michigan. I'm thinking that your spreadsheet would be interesting instruction for my students for the coming 2016 Science Olympiad season.
Thanks,
Brian Turnbull
AMA 77545 (since 1972)
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Received on Fri Jul 17 2015 - 03:17:49 CEST