Mailing List lml@lancaironline.net Message #17121
From: Bill & Sue <harrelson@erols.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: [LML] Re: Wing Loading mysteries
Date: Mon, 13 Jan 2003 09:29:39 -0500
To: <lml>
 
Scott writes:
"In our aircraft configuration, the main wings can only carry the weight of the airplane which does not increase with tail down load.  Only the angle of attack is changed.  Generally, as an airplane is loaded towards Max Gross Weight, the CG moves rearward thus reducing the amount of tail down load."
 
Scott, can't agree with you on this one. The wings DO carry more than the weight of the airplane. They also carry the aerodynamic "weight" of the tail down force. Moving the CG forward increases the total lift required from the wing. The greater lift is provided by increasing the AOA, therefore putting you just a little closer to a stall, ergo, moving the CG forward also increases the stall speed, even though the aircraft total weight remains the same.
 
 
Bill
N5ZQ  LNC2  O-320  VA42  Fredericksburg, VA

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