- Joined
- Feb 25, 2007
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Well, I've cropped Figures 16 & 17 from the Continental Operations and Service Manual PDF (the C90 & O-200 sea level and altitude performance charts), imported them into AutoCad, and brought them to scale. One thing about AutoCad, it quickly shows you where the scaling problems were in the original charts. As soon as I've finished correcting for those scanning errors and have reconstructed the charts (which is kind of tedious), I'll extract the pertinent numbers, do least squares regressions on polynomial fits for the various curves, and put them into Excel. All of this will be invisible to the user of the final Excel spreadsheet.
What the spreadsheet will allow you to do, is
Input the observed rpm, manifold pressure, outside air temperature, and pressure altitude,
and then it will
Output the density altitude, engine horsepower and torque for both the C90 and the O200 for those conditions and also for a specified airport altitude.
Among other things, it will provide an easy way to compare the performance differences between the C90 and O200 for the same operating conditions. May have it compute and print out the hourly fuel burns as well.
Puff, puff.....
JimC
What the spreadsheet will allow you to do, is
Input the observed rpm, manifold pressure, outside air temperature, and pressure altitude,
and then it will
Output the density altitude, engine horsepower and torque for both the C90 and the O200 for those conditions and also for a specified airport altitude.
Among other things, it will provide an easy way to compare the performance differences between the C90 and O200 for the same operating conditions. May have it compute and print out the hourly fuel burns as well.
Puff, puff.....
JimC
