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EN ATPL Principles of Flight Questions in English
Practise Principles of Flight
In a conventional low-wing aeroplane model, assume that flap extension adds a nose-down pitching moment, the tail supplies balancing downforce, and changes in tail downwash and dynamic pressure are neglected. During landing, which combination requires the greatest up-elevator deflection for balance?
The 'short period mode' is an:
In an idealised model, an aft-fuselage engine nacelle has its normal-force centre behind the CG and develops an increasing upward normal force as angle of attack increases. Its contribution to static longitudinal stability is:
In a first-order sideslip model, a symmetrical ventral fin on the centreline lies behind and below the CG. Neglecting secondary interference effects, its contribution to static stability is: (1 = longitudinal, 2 = lateral, 3 = directional)
Static lateral stability that is weak relative to static directional stability tends to be undesirable because:
Which of the following statements concerning control is correct?
Examples of aerodynamic balancing of control surfaces are:
What is the appropriate general action when preparing to land with the stabiliser jammed in its cruise position?
Increase of the delta load factor due to a given vertical upgust at a given EAS occurs when:
For a constant-speed propeller operating within its governing range, how are small changes in airspeed or propeller load normally handled?
