Fltplan.com performance numbers

[Flybeech21]

The only performance numbers for vintage Mooneys that is in the fltplan.com performance database is for the 20E.  Has anyone input acurate data for a 20C?  If so, are you willing to post your tail number so 20C owners can use it in the donor aircraft section for performance numbers?

[Jerry 5TJ]

I have data that I have taken for my 65 "C" in flight -- GPS-derived TAS versus altitude, OAT, MP and RPM.   I don't have fuel flow information.  

[Flybeech21]

That would be great....

[Jerry 5TJ]

Each check was performed with the cowl flaps closed, CHT 50 to 100 degrees rich of peak, overhead air scoop closed, and the plane stabilized on course with no altitude fluctuations, at a flying weight of about 2200 pounds.  The speed is GPS ground speed, and in each direction I averaged four to six readings in a 3 to 5 minute run.

I have more recent data, and will update this post when I get those data from the notebook to the spreadsheet.   This is one airplane's data, taken by one pilot.   Your mileage may vary, as the saying goes. 

I took this format from Paul Smedshammer’s site http://www.coreutilities.com/mooney/Speed.html which lists speed data before and after various modifications on his 1967 M20F. He takes all his readings at 4,500', 2,500 RPM and 25" MP.   That's a good basis for plane-to-plane comparison, too.

 

[Flybeech21]

Thank you....

[Jerry 5TJ]

Here are some more flight data points for my M20C.

The figures for 4,500 feet are a good standard comparison point.  Those data taken with mixture full rich, 2,500 rpm and 25" manifold pressure. 

Note for you mathematicians:   The quadrant speeds are rounded in this chart, but the average speeds shown carry the proper number of significant bits from the collected data.