Question 76-1 : Propellers and rotors. lift generated by a blade depends on.1 airmass density.2 relative wind speed.3 blade area.4 blade's angle of attack.5 airfoil shape ? [ Mandatory specific ]

Question 1

Question 76-1 : Propellers and rotors. lift generated by a blade depends on.1 airmass density.2 relative wind speed.3 blade area.4 blade's angle of attack.5 airfoil shape ? [ Mandatory specific ]

1, 2, 3, 4, 5.

Answer

Cord line.

Answer

An increase in drag and decrease in lift.

Question 2

Question 76-2 : Propellers & rotors. the diameter of a propeller blade is usually expressed in ?

Inche.

Question 3

Question 76-3 : Propellers & rotors. the pitch of a propeller blade is usually expressed in ?

Inche.

Question 4

Question 76-4 : Propellers & rotors. the geometric pitch of a propeller is the ?

Distance a propeller blade element is travelling in forward direction in one propeller revolution.

Question 5

Question 76-5 : Propellers and rotors. propeller efficiency may be defined as the ratio between ?

Power available / power required.

Question 6

Question 76-6 : Propellers and rotors. a propeller blade is twisted, so as to ?

Equalize the lift over the entire length of the blade.

Question 7

Question 76-7 : The statement that best describes the effect of the center of gravity on the aircraft stability is ?

A forward center of gravity increases the natural stability of an aircraft.

Question 8

Question 76-8 : Indicate how the conventional multicopter controls its attitude ?

The engines change their rotational speed rpm according to the desired direction of flight.

Question 9

Question 76-9 : The ground effect ?

Reduces induced drag.

Question 10

Question 76-10 : The laminar layer on a wing profile is ?

The thin, smooth flow on the extrados, from the leading edge to the point of transition.

Question 11

Question 76-11 : The turbulent layer on a wing profile is ?

The thick and turbulent flow on the extrados, after the point of transition.

Question 12

Question 76-12 : The imaginary line joining the leading and trailing edge of the wing is called ?

Question 13

Question 76-13 : The part of the wing, shown by the arrow, is. 55 ?

A flap.

Question 14

Question 76-14 : Spoiler extension for a fixed wing drone causes ?

Question 15

Question 76-1 : Propellers and rotors. lift generated by a blade depends on.1 airmass density.2 relative wind speed.3 blade area.4 blade's angle of attack.5 airfoil shape ? [ Mandatory specific ]

1, 2, 3, 4, 5.

Question 76-2 : Propellers & rotors. the diameter of a propeller blade is usually expressed in ?

Inche.

Question 76-3 : Propellers & rotors. the pitch of a propeller blade is usually expressed in ?

Inche.

Question 76-4 : Propellers & rotors. the geometric pitch of a propeller is the ?

Distance a propeller blade element is travelling in forward direction in one propeller revolution.

Question 76-5 : Propellers and rotors. propeller efficiency may be defined as the ratio between ?

Power available / power required.

Question 76-6 : Propellers and rotors. a propeller blade is twisted, so as to ?

Equalize the lift over the entire length of the blade.

Question 76-7 : The statement that best describes the effect of the center of gravity on the aircraft stability is ?

A forward center of gravity increases the natural stability of an aircraft.

Question 76-8 : Indicate how the conventional multicopter controls its attitude ?

The engines change their rotational speed rpm according to the desired direction of flight.

Question 76-9 : The ground effect ?

Reduces induced drag.

Question 76-10 : The laminar layer on a wing profile is ?

The thin, smooth flow on the extrados, from the leading edge to the point of transition.

Question 76-11 : The turbulent layer on a wing profile is ?

The thick and turbulent flow on the extrados, after the point of transition.

Question 76-12 : The imaginary line joining the leading and trailing edge of the wing is called ?

Cord line.

Question 76-13 : The part of the wing, shown by the arrow, is. 55 ?

A flap.

Question 76-14 : Spoiler extension for a fixed wing drone causes ?

An increase in drag and decrease in lift.

Question 76-15 : Induced drag is associated with ?

Lift.