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EAA21.ORG Experimental Aircraft Association Chapter 21 2018-03-16T06:10:12-06:00 http://www.eaa21.org/feed.php?f=2&t=372 2018-03-16T06:10:12-06:00 2018-03-16T06:10:12-06:00 http://www.eaa21.org/viewtopic.php?t=372&p=785#p785 <![CDATA[DA40-180 Mean Aerodynamic Chord calculation per POH]]>
MAC (inches) 45.72 and,
W&B tolerance for AC less than 5,000 lb. gross (see AC 43.13-1) is:
0.05 x MAC = 0.05 x 45.72 = 2.3 inches; wt. <=1.0 US pound

Note: these are estimates. Please check with your A&P for the actual requirements. These are considered "negligible weight and CG changes".

Reference FAA W&B Handbook and AC 43.13-1/2B for additional information (too big to attach here).


DA 40-180 Wing data from the POH:

Wing

Airfoil Wortmann FX 63-137/20- W4

Wing Area appr. 13.54 m2 appr. 145.7 sq.ft.

Mean aerodynamic chord (MAC) appr. 1.121 m appr. 3ft 8.1 in

Aspect ratio appr. 10.53 Dihedral appr. 5° )

Leading edge sweep appr. 1°

Statistics: Posted by rhino — Fri Mar 16, 2018 6:10 am

]]> 2018-03-16T05:38:12-06:00 2018-03-16T05:38:12-06:00 http://www.eaa21.org/viewtopic.php?t=372&p=784#p784 <![CDATA[Re: March, 2018 Meeting Handouts & Presentation materials]]>
march, 2018 eaa 21 meeting.pdf

Statistics: Posted by rhino — Fri Mar 16, 2018 5:38 am

]]> 2018-03-15T07:07:11-06:00 2018-03-15T07:07:11-06:00 http://www.eaa21.org/viewtopic.php?t=372&p=783#p783 <![CDATA[Re: March, 2018 Meeting Handouts & Presentation materials]]>
Here’s the SR20 POH: http://www.cospilot.com/files/SR20_POH.pdf

Statistics: Posted by Vaughn DeCoster — Thu Mar 15, 2018 7:07 am

]]> 2018-03-15T04:48:41-06:00 2018-03-15T04:48:41-06:00 http://www.eaa21.org/viewtopic.php?t=372&p=782#p782 <![CDATA[March, 2018 Meeting Handouts & Presentation materials]]>
AC_90-116.pdf
AC 90-109.pdf
AC 90-89A.pdf

Chapter 10 (Weight & Balance) of the Pilots Handbook of Aeronautical Knowledge (PHAK) may be found here:

12_phak_ch10.pdf

And the presentation slides here:

march, 2018 eaa 21 meeting.pptx

Statistics: Posted by rhino — Thu Mar 15, 2018 4:48 am

]]>