Basic Theory Flashcards
What does this formula represent?
_____ = Mass/Volume
Density
What is done when a force acts upon a body and moves it?
Work
Which of Newton’s Laws state that “a body at rest tends to remain at rest and a body in motion tends to remain in motion … unless acted upon by some unbalanced force?”
The Law of Equilibrium
The measurement of the average kinetic energy of air particles is called what?
Temperature
True or false: Dynamic pressure is the measurement of force that molecules exert on each other in a still fluid
False
A higher than standard pressure day will cause what?
Increased takeoff roll
True or false: Groundspeed is indicated airspeed corrected for winds
False
True airspeed must do what as you climb in altitude for a constant indicated airspeed?
Increase
The apparent motion of the air with respect to the motion of the aircraft is defined as what?
Relative wind
The angle of attack is defined as what?
The angle between the relative wind and the chordline of the airfoil
What is the benefit of a tapered wing?
Structural stiffness
Having a CG that is too far aft causes the aircraft to exhibit what behavior?
A tendency to pitch up into a stall
What is the point from which movements in roll, pitch, and yaw axes are measured?
Center of gravity
The axis about which the airplane’s nose moves up and down is the ____?
Lateral or pitch axis
What is moment?
Created when a force is applied at some distance from an axis or fulcrum, producing rotation about that point
Mass per unit of volume defines what?
Density
What is potential energy?
The ability of a body to do work due to its position or state of being
The Law of Interaction states what?
For every action there is an equal and opposite reaction
True airspeed will be what in relation to indicated airspeed at 10,000 feet altitude?
Greater than
The chordline of an airfoil is defined as what?
A measure of a wing along the chordline, from the leading edge to the trailing edge
Air density is ____ at 10,000 compared to 5,000 feet
Lower
What is the altimeter setting of a standard day where pressure altitude matches true altitude? (in-Hg)
29.92
The center of gravity is the point at which _____.
All weight is concentrated
Which axis does the aircraft nose move left or right about the center of gravity?
Yaw
