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370 Multiple Choice Antworten
Are cambered aerofoils much more "sensitive" to contamination than laminar profiles?
No.
No, but only for small angles of attack.
Yes.
Yes, but only at high angles of attack.
To prevent airleron flutter it is necessary to:
Increase the bending rigidity of the wing and apply mass balance to the aileron.
Apply aerodynamic balance - move the wing CoG closest to the axis of torsion.
Apply balance tab and increase the torsional rigidity of the wing.
Apply anti-balance tab and aileron mass balance.
To prevent bending-torsional flutter it is necessary to:
Increase the torsional rigidity of the wing and move the wing CoG closest to the axis of torsion.
Apply aerodynamic balance - move the wing CoG closest to the axis of torsion.
Apply balance tab and increase the torsional rigidity of the wing.
Apply anti-balance tab and aileron mass balance.
To prevent airleron reversal it is necessary to:
Increase the torsional rigidity of the wing.
Apply aerodynamic ballance.
Apply balance tab.
Apply anti-balance tab.
To prevent buffeting it is necessary to:
Use the T-tail configuration and carefully design wing-fuselage joint.
Use the T-tail configuration and trim tab.
Use trim tab and carefully design wing-fuselage joint.
Increase the bending and torsional rigidity of the tailplane.
An aerodynamic leading edge is a line joining the points of airfoil where:
Airflow velocity is zero and the pressure equals stagnation pressure.
Airflow velocity is zero.
The pressure is greater than the stagnation pressure.
Airflow velocity is zero and the pressure is at its minimum value.
Lack of airlerons mass balance during high-speed flight is a direct cause of:
Aileron flutter.
Bending- torsional flutter.
Airleron reversal.
Wing torsional divergence.
Buffeting means:
Shaking of control surfaces.
Bending- torsional vibrations.
Aileron flatter.
Tailplane flatter.
