Propellers & rotors the diameter of a propeller blade is usually expressed in ? [ Mandatory specific ]

Question 76-1 : Inche mm cm foot

Propellers & rotors the pitch of a propeller blade is usually expressed in ?

Question 76-2 : Inche cm dm mm

Propellers & rotors the geometric pitch of a propeller is the ?

Question 76-3 : Distance a propeller blade element is travelling in forward direction in one propeller revolution angle of a blade element lenght of the chord line of one blade element distance a propeller would have to advance in one revolution to give no thrust

Propellers and rotors propeller efficiency may be defined as the ratio between ?

Question 76-4 : Power available / power required power required / power available thrust / power power / thrust

Propellers and rotors a propeller blade is twisted so as to ?

Question 76-5 : Equalize the lift over the entire length of the blade cancel the coriolis forces move the centre of gravity of the blade increase lift on the blade

The statement that best describes the effect of the center of gravity on the ?

Question 76-6 : A forward center of gravity increases the natural stability of an aircraft a rear center of gravity and 5 degrees right increases the natural stability of an aircraft the center of gravity position does not affect the stability of the aircraft a rear center of gravity increases the natural stability of an aircraft

Indicate how the conventional multicopter controls its attitude ?

Question 76-7 : The engines change their rotational speed rpm according to the desired direction of flight the engines are oriented according to the desired direction of the flight the propellers change their pitch according to the desired direction of the flight the pilot controls the ailerons and the elevator in the desired direction of flight

The ground effect ?

Question 76-8 : Reduces induced drag increases the air resistance increases the speed of the aircraft increases parasite drag

The laminar layer on a wing profile is ?

Question 76-9 : The thin smooth flow on the extrados from the leading edge to the point of transition the thin smooth flow on the intrados from the leading edge to the point of transition the thick and turbulent flow on the intrados close to the trailing edge the thick and turbulent flow on the extrados close to the trailing edge

The turbulent layer on a wing profile is ?

Question 76-10 : The thick and turbulent flow on the extrados after the point of transition the thick and turbulent flow on the intrados after the point of transition the thin smooth flow on the extrados from the leading edge to the point of transition the thin smooth flow on the intrados from the leading edge to the point of transition

The imaginary line joining the leading and trailing edge of the wing is called ?

Question 76-11 : Cord line dihedral incidence camber

The part of the wing shown by the arrow is . 55 ?

Question 76-12 : A flap an aileron the vertical fine the keel

Spoiler extension for a fixed wing drone causes ?

Question 76-13 : An increase in drag and decrease in lift an increase in lift only an increase in lift and drag decrease in drag only

Induced drag is associated with ?

Question 76-14 : Lift the angle of attack the angle of incidence the friction of the relative airflow on the contour of the aircraft

Parasit drag is associated with ?

Question 76-15 : The friction of the relative airflow on the contour of the aircraft lift the angle of attack the angle of incidence