PL080 - Principles of Flight PPL(A)

In what proportion to the air density are depends aerodynamic forces on the aerofoil? 

 In Which group that is device, which doesn't serve to reduce of the forces that the pilot to must execute on the control column?

In normal flying conditions the controls forces are: 

In The profiles of normal, arcuate line-shaped frame, with an increase in angle of attack aerodynamic resultant force: 

In static profiles, with increased angle of attack aerodynamic resultant force:

 In the symmetric profiles for the angle of attack alpha = 0 °: 

In the profiles of symmetric, with an increase in angle of attack aerodynamic resultant force:

In the conventional solution, vertical tail Ionsists of:

In the conventional solution the height tail consists of:

The coordinate system describing the movement of the aircraft during flight axis OX? Is called:

The coordinate system describing the movement of the aircraft during flight axis OY? Is called:

The coordinate system describing the movement of the aircraft during flight axis OZ? Is called:

In the flight, the pilot set tilts a joystick to the right. Assuming that the aileron deflects by the same angle, following statement will be true: 

 In a result of aileron going up and down by the same angle will be: 

Using of winglets on tips of wings decrease drag:

A boundary layer of an aerofoil is a layer in which: 

The value of the coefficient of lift (CL) for the critical angle of attack "AOA" has the maximum value. 

The value of the coefficient of drag (Cd) for the critical angle of attack "AOA" has the maximum value. 

The internal aerodynamic balance of aileron is executed by: 

With increase of altitude an air density: 

The Load factor 'n ' during dive is:

The load factor during turn depends from:

Moving of whose devices are not mechanically coupled with moving control surface?

A graph of function of the coeficient of drag Cd = f (AOA) for asymmetric profile is:

A graph of the function Cl = f (Cd) for the symmetric profile is: 

It has no symmetry. 

A graph of the function Cl = f (AOA) for a symmetric profile is: 

Graphs of which functions for the symetric profile are intersecting the center of the coordinate system? 

Graphs of which functions for the symetric profile are intersect center of coordinate system?

Dihedral of the wings is used to:

The increase in air temperature at a constant altitude causes: 

What are the main elements of the resistance aircraft called skin friction dran?

The principle of continuity of the movement of air flowing through the tunnel with variable cross-section states that:

 Apply of aerodynamic balance of controls is designed to: 

The ability to maintain the balance and prevent its changes is called:

Ability to change the steady-state flight under the influence of corresponding rudder deflection is called:

The external aerodynamic compensation of control surface takes place by the application of:

The phenomenon of aileron reversal that is: 

Reducing of airstream cross- section means: 

An aerodynamic twist of wing is characterized itself by: