On a high winged aircraft in a banked turn, which of the following are true?
- The down-going wing loses lift producing a stabilizing effect.
- The up-going wing loses lift causing a stabilizing effect.
- The wing dihedral alone causes a stabilizing effect.
Explanation
As the aircraft rolls, the up-going (rising) wing meets the airflow at a reduced effective angle of attack while the down-going wing sees an increased one. The rising wing therefore loses lift and the descending wing gains it, opposing the roll. This roll damping is a stabilising effect that resists further banking.
Kerongeorge asking:
Please explain this.
Community Comments (1)
D
dimky Posts: 514 09.05.2015 / 11:17
In high-wing planes, the location of the fuselage (below the wings) causes the relative wind to exert an upward force on the upwind (lowered) wing, therefore helping to return the aircraft to wings-level flight. With low-wing models, the fuselage leads to the relative wind exerting a downward force on the lowered wing, thus exacerbating the condition.
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