Tests have been conducted to determine the low-speed stability, damping -in –roll, and stall characteristics of five wings, three wings with 42° sweepback and having aspect ratios of 5.9, 3, and 2, and two wings with 38° sweepforward and having aspect ratios of 5.9 and 3* The results showed that the wings of aspect ratio 5.9 were longitudinally unstable at the stall but that reducing the aspect ratio tended to eliminate the instability. Sweepforward produced a maximum value of negative effective dihedral approxi¬mately one-half of the positive value produced by sweepback. Over the linear range of the lift curve the swept-forward wings had zero directional stability, whereas the swept-back wings had a marked increase in directional stability with lift coefficient.
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