W and B polygon again!!

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W and B polygon again!!

Author	Message
barne_as	barne_as posted 7/3/2013 7:19:15 PM Topic Details Share Topic
Group: Forum Members Posts: 9, Visits: 48	Hi all, Im struggling to create the WandB polygon for my new group aircraft. Its an AA5a and the graph in the POH is of Moment/1000 vs Loaded weight in Lbs. The POH shows almost a parallelogram with points at: 120,1500, 139,1500, 204,2200, 189,2200, and 145,1780 Ive looked through all the other aircraft documents and cant find any other WandB chart Can anyone help me please?
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*stevelup*	*stevelup* posted 7/3/2013 11:10:17 PM Post Details Share Post
Group: Moderators Posts: 593, Visits: 4.9K	If the graph in your POH is a parallelogram, then it is almost certainly a moment diagram rather than a CG diagram. You should be able to convert it into a CG diagram (which is what SD needs) by multiplying each moment figure by the weight. Have a look at this thread:- http://skydemon.aero/forums/Topic9348.aspx
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