The wind tunnel tests show that long protrusions have little effect on longitudinal aerodynamic characteristics, but a considerable effect on the roll moment especially at a large angle of attack.

• 经风洞试验了解并证实,长鼓包对纵向气动特性影响不大,对滚转力矩稍有影响,特别是当攻角较大时,对滚转力矩有一定影响。