As a result , the lift comes at a higher drag penalty than when using wings .
Attainable dynamic - lift - to - drag ratios are significantly below those of efficient fixed wings , in part because induced drag increases with decreasing aspect ratio .
The lift comes at a higher drag penalty than when using wings .
Attainable dynamic - lift - to - drag ratios are significantly below those of efficient fixed wings , in part because induced drag increases with decreasing aspect ratio .