NIFE Aero Exam Questions and Verified
Detailed Answers
Define Vector - ✔✔A quantity that expresses both magnitude and direction. A
vector quantity is represented by an arrow that displays direction and has a
length proportional to magnitude
Moment - ✔✔Force applied at some distance from an axis or fulcrum
Fxd
(Distance: from the point of rotation that is perpendicular to force, "moment
arm")
Equilibrium Flight - ✔✔When the sum of all FORCE and all MOMENTS around
the COG are equal to zero
When are the four forces that act on an airplane in equilibrium? - ✔✔Thrust,
drag, lift, weight
Atmospheric static pressure - ✔✔Weight of a column of air over a given area
Air Density - ✔✔The total mass of air particles per unit of volume
What three things happen as air becomes less dense for airplane: - ✔✔Reduces
power
Reduces thrust
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,Reduces lift
With altitude increase, what happens to air temp - ✔✔Decreases linearly at 2 C
(3.57 F) per 1000ft, until 36000ft.
What is this rate of temp change called - ✔✔Average Lapse Rate
Humidity - ✔✔Amount of water vapor in the air
Humidity and Density relationship - ✔✔Inverse
General Gas Law - ✔✔P = pRT
Steady airflow - ✔✔Exists if at every point in the airflow static pressure, density,
temperature, and velocity remain constant over time (may vary from one point
to another, but at any given point, it is constant)
Same path is followed
Steamline - ✔✔the path that air particles follow in steady airflow
Streamtube (2 things) - ✔✔collection of many adjacent streamlines.
closed system
Continuity Equation - ✔✔A1V1 = A2V2
Bernoulli's Principle - ✔✔Total energy of a fluid can be separated into potential
energy (static pressure) and kinetic energy (dynamic pressure)
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, Total Pressure (Pt) = - ✔✔Ps + q
Talk about Bernoullis Prin in a closed system - ✔✔Total pressure is constant,
therefore an increase in static pressure = decrease in dynamic pressure
PT = - ✔✔PT = Ps + (1/2)pV^2
Indicated Airspeed - ✔✔Actual instrument indication of the dynamic pressure
the airplane is exposed to during flight
Calibrated Airspeed - ✔✔When indicated airspeed is corrected for instrument
error
Equivalent Airspeed - ✔✔True airspeed at sea level on a standard day that
produces the same dynamic pressure as the actual flight condition
Found by correcting calibrated airspeed for compressibility error
True Airspeed - ✔✔Actual velocity at which an airplane moves through an air
mass
Found by correcting equivalent airspeed for the difference between the local air
density (p) and the density of the air at sea level on a standard day (po)
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©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Detailed Answers
Define Vector - ✔✔A quantity that expresses both magnitude and direction. A
vector quantity is represented by an arrow that displays direction and has a
length proportional to magnitude
Moment - ✔✔Force applied at some distance from an axis or fulcrum
Fxd
(Distance: from the point of rotation that is perpendicular to force, "moment
arm")
Equilibrium Flight - ✔✔When the sum of all FORCE and all MOMENTS around
the COG are equal to zero
When are the four forces that act on an airplane in equilibrium? - ✔✔Thrust,
drag, lift, weight
Atmospheric static pressure - ✔✔Weight of a column of air over a given area
Air Density - ✔✔The total mass of air particles per unit of volume
What three things happen as air becomes less dense for airplane: - ✔✔Reduces
power
Reduces thrust
Page 1 of 20
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,Reduces lift
With altitude increase, what happens to air temp - ✔✔Decreases linearly at 2 C
(3.57 F) per 1000ft, until 36000ft.
What is this rate of temp change called - ✔✔Average Lapse Rate
Humidity - ✔✔Amount of water vapor in the air
Humidity and Density relationship - ✔✔Inverse
General Gas Law - ✔✔P = pRT
Steady airflow - ✔✔Exists if at every point in the airflow static pressure, density,
temperature, and velocity remain constant over time (may vary from one point
to another, but at any given point, it is constant)
Same path is followed
Steamline - ✔✔the path that air particles follow in steady airflow
Streamtube (2 things) - ✔✔collection of many adjacent streamlines.
closed system
Continuity Equation - ✔✔A1V1 = A2V2
Bernoulli's Principle - ✔✔Total energy of a fluid can be separated into potential
energy (static pressure) and kinetic energy (dynamic pressure)
Page 2 of 20
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, Total Pressure (Pt) = - ✔✔Ps + q
Talk about Bernoullis Prin in a closed system - ✔✔Total pressure is constant,
therefore an increase in static pressure = decrease in dynamic pressure
PT = - ✔✔PT = Ps + (1/2)pV^2
Indicated Airspeed - ✔✔Actual instrument indication of the dynamic pressure
the airplane is exposed to during flight
Calibrated Airspeed - ✔✔When indicated airspeed is corrected for instrument
error
Equivalent Airspeed - ✔✔True airspeed at sea level on a standard day that
produces the same dynamic pressure as the actual flight condition
Found by correcting calibrated airspeed for compressibility error
True Airspeed - ✔✔Actual velocity at which an airplane moves through an air
mass
Found by correcting equivalent airspeed for the difference between the local air
density (p) and the density of the air at sea level on a standard day (po)
Page 3 of 20
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
