Chapter 2 Flashcards
(25 cards)
What does PHAK stand for?
Pilot’s Handbook of Aeronautical Knowledge
True or False: Chapter 2 of the PHAK covers the principles of flight.
True
Fill in the blank: The four forces acting on an aircraft are lift, weight, __________, and drag.
thrust
What is the primary force that opposes the weight of the aircraft?
Lift
Multiple Choice: Which of the following is NOT one of the four forces acting on an aircraft? A) Lift B) Drag C) Thrust D) Friction
D) Friction
What is the term for the force that pulls an aircraft downward?
Weight
True or False: Thrust is produced by the aircraft’s wings.
False
What is the primary purpose of drag?
To oppose thrust
Fill in the blank: The angle of attack is the angle between the __________ and the relative wind.
chord line of the wing
What happens to lift as the angle of attack increases?
Lift increases up to a critical angle
Multiple Choice: Which factor does NOT affect lift? A) Airspeed B) Wing area C) Weight D) Angle of attack
C) Weight
What is the definition of stall in aviation?
A condition where lift is significantly reduced due to excessive angle of attack
True or False: An increase in airspeed will always result in an increase in lift.
True
What is the relationship between lift and air density?
Lift increases with an increase in air density
Fill in the blank: The lift-to-drag ratio is a measure of an aircraft’s __________ efficiency.
aerodynamic
What is induced drag?
Drag that results from the generation of lift
Multiple Choice: Which of the following increases induced drag? A) Increased airspeed B) Higher angle of attack C) Decreased weight D) Larger wing area
B) Higher angle of attack
What is the primary effect of weight on aircraft performance?
It affects the aircraft’s ability to climb and maintain altitude
True or False: Thrust is produced by engines or propellers.
True
What is the critical angle of attack?
The angle at which lift begins to decrease rapidly
Fill in the blank: The __________ of an aircraft is the speed at which it can no longer maintain level flight.
stalling speed
What role does the wing’s shape play in lift generation?
It affects the airflow and pressure distribution over the wing
Multiple Choice: Which of the following is a way to increase thrust? A) Decrease engine power B) Increase propeller pitch C) Increase engine RPM D) Reduce aircraft weight
C) Increase engine RPM
What is the primary function of flaps on an aircraft?
To increase lift at lower speeds
