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Performance data for N519PJ

 
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Deems Davis



Joined: 09 Jan 2006
Posts: 925

PostPosted: Thu May 21, 2009 1:49 pm    Post subject: Performance data for N519PJ Reply with quote

With the wheel pants & leg fairings installed, I set out this am to
record some speed/performance data. Here's the results. I haven't
validated the IAS so I don't know if there's an error in the static
ports. After paint they are essentially flush with the skins, and I
understand that can be a problem.

I'm not sure how this is going to format so I'm also attaching a
spreadsheet version of the data.

Deems Davis
N519PJ

Quote:

Set 1


Set 2
Heading GPS TAS IAS
Heading GPS TAS IAS
360 178.0 172.0 153.0
360 166.0 164.0 145.0
270 182.0 174.0 154.0
270 161.0 162.0 145.0
180 181.0 174.0 155.0
180 166.0 164.0 144.0
90 185.0 175.0 155.0
90 175.0 164.0 145.0
Average (Knots) 181.5 173.8 154.3
Average (Knots) 167.0 163.5 144.8
Average (MPH) 208.9 200.0 177.5
Average (MPH) 192.2 188.2 166.6









Flight Conditions



Flight Conditions

RPM 2450


RPM 2350

MP 24.5


MP 23.5

Fuel Flow 16.5


Fuel Flow 15.4

OAT 18C


OAT 18C

Baro Presure 29.88


Baro Presure 29.88

Pressure Altitude 6500


Pressure Altitude 6500




















Set 3


Set 4
Heading GPS TAS IAS
Heading GPS TAS IAS
360 171.0 168.0 149.0
360 164.0 159.0 141.0
270 165.0 164.0 148.0
270 158.0 162.0 144.0
180 166.0 166.0 143.0
180 166.0 162.0 144.0
90 172.0 167.0 145.0
90 166.0 162.0 144.0
Average (Knots) 168.5 166.3 146.3
Average (Knots) 163.5 161.3 143.3
Average (MPH) 193.9 191.3 168.3
Average (MPH) 188.2 185.6 164.9









Flight Conditions



Flight Conditions

RPM 2350


RPM 2350

MP 22.5


MP 21.5

Fuel Flow 13.9


Fuel Flow 13.1

OAT 18C


OAT 18C

Baro Presure 29.88


Baro Presure 29.88

Pressure Altitude 6500


Pressure Altitude 6500




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Speed_Performance_Runs_21_May_2009_N519PJ.xls
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robin1(at)mrmoisture.com
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PostPosted: Thu May 21, 2009 2:54 pm    Post subject: Performance data for N519PJ Reply with quote

Thanks Deems!
Good stuff. Now I don't have enough time on my -10 to make an
informed statement (that never stops me) but I know my little 6A loved
higher. I flew to Cottonwood the other day at 11,500 GPS = 197.00 Kts.
Now we all find a tail wind once in a while so I don't put ANY weight
into that number but I believe that 6,500 is still less than ideal for
optimizing speed in our similarly configured planes (BPE, SJ, Portly).
Regardless solid numbers for a wonderful design & your beautiful build.

Robin


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