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Title: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Gunslinger on August 02, 2009, 06:20:27 pm Thought you all might find this useful. King had completed a similar chart before.
(https://webspace.utexas.edu/joem/ROF-releaseable/ROF-ROC1.jpg) S~ Gunny Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Kingsnake on August 02, 2009, 06:31:17 pm 8)
Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Kingsnake on August 02, 2009, 06:42:12 pm Wait a sec. This is a bit misleading in that the ceilings are not correct. In the Gunnyshpere the ceiling makes a big difference. Trim the lines at the ceiling. They must have changed the N17 time to climb because I had a very different looking line and yours looks more realistic. What we need now is a weighted rate of turn graph and we will have a sufficient compare chart for RoF.
Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Gunslinger on August 02, 2009, 07:32:20 pm Thanks for pointing out the N17 error King - replotting now.
S~ Gunny Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Kingsnake on August 03, 2009, 04:47:55 am I'd like the excel file. I sat around trying to do that in excel like a caveman. I'm starting to wonder what happened to the higher functioning part of my brain.
Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Gunslinger on August 03, 2009, 09:43:22 am King,
Here's the spreadsheet in it's current version: https://webspace.utexas.edu/joem/ROF-releaseable/ROF%20Compare%21.xls (https://webspace.utexas.edu/joem/ROF-releaseable/ROF%20Compare%21.xls) I had started a second chart (with sheets) to provide metric (versus imperial) calibration, however I did not finish it. The first chart and "imperial" spreadsheets are completely functional. Enjoy, S~ Gunny Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Kingsnake on August 03, 2009, 05:03:32 pm You are having the same problem I was having, the lines are extending beyond the plotted points. In this case it is the maximum service ceiling. Except you probably know how to fix that while I had to draft a graph. Nice work buddy.
Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: TX-Gunslinger on August 03, 2009, 05:20:31 pm yeah - the "connect" lines to data points only give you the trends when there is enough data...
The way I did it was to invoke curve fitting routines built ino excel. I found Polynomial to be the best fit for what I was looking for - i.e. reasonable extrapolation of existing points into areas where measurement was not available. I wanted a good guess for the areas of "no data" in summary... S~ Gunny Title: Re: Rate of Climb in Rise-of-Flight - charted data Post by: GOZR on August 03, 2009, 07:59:00 pm lets do a spreadsheet about sound.. that could help the dev.. transfering Sound into graphic graph would be cool..
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