MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 35
ubsequently added, will alter the C.G. position,which must therefore be re-determined. To calculate BALANCE, a suitable BALANCEDATUM (or vertical line) is selected. This is sometimesthe nose of the airplane, but may be any other con-venient point. The BALANCE MOMENT of the Basic airplane isfound by… … HMm Fig. 11. Forces acting on an Airplane in flight. Fig. 13. Balance. Theory of Flight 31 If loads are forward of the C.G. Datum their MomentArms are Positive (+). Loads behmd the C.G. Datumhave Negative (—) Moment Arms. The Total BalanceMoment is the algebraic sum. The C.G. is found by dividing…
Airplanes
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