Quote:
Originally Posted by Rik
I'm confused..
Mitch, I appreciate what you are saying but FF requires (WHY???) a forward CG, twice, and an AFT CG, twice.
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Most probably you have to insert 4 or 5 points in ForeFlight to make a square (I work with SkyDemon and PocketFMS, I have not worked with ForeFlight)
Thats why you need two forward CG points and two aft.
1) 80.49 / empty weight or 0 lbs
2) 80.49 / 1320 lbs
3) 85.39 / 1320 lbs
4) 85.39 / empty weight or 0 lbs
5) 80.49 / empty weight or 0 lbs (depending on program to complete square)
(Foreflight W&B demo)
Thereafter insert the stations:
Plane_____________W&B
Pilot______________78.85
Passenger_________78.85
Fuel______________110.28
Baggage__________110.81
The POH graph works in a different manner. You will enter the graph at page 4.6POH with
TOTAL moment and weight. For simplification the moment number is divided by 1000 (so moment 100 is originally 100000).
The graph used by the nav programs will go one step further; divide the total moment through the total weight. With that you get a number in inches which has to be between 80.49 and 85.39 which is easy to plot.
For example: In the picture below you can see the numbers with red boxes 1292.86lbs with a moment of 109794.93. At page 4.6 you can enter the graph with the number 1293 and 110 the Van's way. Forelight will present the graph as in my excel sheet.
