* LK8000 polar for: ARCUS M  from Cumulus Soaring GN II
* MassDryGross[kg], MaxWaterBallast[liters], Speed1[km/h], Sink1[m/s], Speed2, Sink2, Speed3, Sink3, WingArea[m2]
 680, 185, 105, -0.595, 153, -1.1, 197, -2, 15.6

