NIFE Aerodynamics Unit 1 Exam Questions and Answers With Verified Solutions
2025
Vector - ✔✔A quantity that has magnitude and direction. Resultant vector may be divided into separate
components.
Density (rho) - ✔✔Mass per unit volume
Moment - ✔✔A rotational force around a point or axis
Equilibrium Flight - ✔✔Exists when the sum of all forces and the sum of all moments around the center
of gravity are equal to zero.
Trimmed Flight - ✔✔Exists when the sum of all moments around the center of gravity is equal to zero.
Temperature vs Altitude - ✔✔Decreases linearly with an increase in altitude at a rate of 2 deg C per
1000 ft until approximately 36,000 ft. After 36,000 ft, the temperature is constant (isothermal)
Humidity vs Air density - ✔✔As humidity increases, air density decreases
General Gas Law - ✔✔Sets the relationship between three properties of air: pressure (P), density (ρ),
and temperature (T).
P=ρRT (R is a constant for any given gas)
Steady Airflow - ✔✔Exists if at every point in the airflow static pressure, density, temperature, and
velocity remain constant over time.
Continuity equation - ✔✔A1V1=A2V2
, Bernoulli's Equation - ✔✔Total pressure (Pt) equals static pressure (Ps) plus dynamic pressure (q)
Pt=Ps+q
q=(1/2)*ρ*(V^2)
Order of Airspeeds - ✔✔Indicated Airspeed (IAS)
Calibrated Airspeed (CAS)
Equivalent Airspeed (EAS)
True Airspeed (TAS)
Ground Speed
Remember "ICE-TG"
Indicated Airspeed (IAS) - ✔✔Airspeed read directly from the airspeed indicator
Calibrated Airspeed (CAS) - ✔✔Indicated airspeed corrected for instrument error.
Equivalent Airspeed (EAS) - ✔✔The 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 (TAS) - ✔✔Actual speed you are moving through the air
Ground Speed (GS) - ✔✔True Airspeed corrected for winds; actual speed of airplane over the ground.
Mean chamber line - ✔✔line drawn halfway between the upper and lower surfaces of a wing.
Chord - ✔✔precise measurement between the leading and trailing edges measured along the chordline
2025
Vector - ✔✔A quantity that has magnitude and direction. Resultant vector may be divided into separate
components.
Density (rho) - ✔✔Mass per unit volume
Moment - ✔✔A rotational force around a point or axis
Equilibrium Flight - ✔✔Exists when the sum of all forces and the sum of all moments around the center
of gravity are equal to zero.
Trimmed Flight - ✔✔Exists when the sum of all moments around the center of gravity is equal to zero.
Temperature vs Altitude - ✔✔Decreases linearly with an increase in altitude at a rate of 2 deg C per
1000 ft until approximately 36,000 ft. After 36,000 ft, the temperature is constant (isothermal)
Humidity vs Air density - ✔✔As humidity increases, air density decreases
General Gas Law - ✔✔Sets the relationship between three properties of air: pressure (P), density (ρ),
and temperature (T).
P=ρRT (R is a constant for any given gas)
Steady Airflow - ✔✔Exists if at every point in the airflow static pressure, density, temperature, and
velocity remain constant over time.
Continuity equation - ✔✔A1V1=A2V2
, Bernoulli's Equation - ✔✔Total pressure (Pt) equals static pressure (Ps) plus dynamic pressure (q)
Pt=Ps+q
q=(1/2)*ρ*(V^2)
Order of Airspeeds - ✔✔Indicated Airspeed (IAS)
Calibrated Airspeed (CAS)
Equivalent Airspeed (EAS)
True Airspeed (TAS)
Ground Speed
Remember "ICE-TG"
Indicated Airspeed (IAS) - ✔✔Airspeed read directly from the airspeed indicator
Calibrated Airspeed (CAS) - ✔✔Indicated airspeed corrected for instrument error.
Equivalent Airspeed (EAS) - ✔✔The 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 (TAS) - ✔✔Actual speed you are moving through the air
Ground Speed (GS) - ✔✔True Airspeed corrected for winds; actual speed of airplane over the ground.
Mean chamber line - ✔✔line drawn halfway between the upper and lower surfaces of a wing.
Chord - ✔✔precise measurement between the leading and trailing edges measured along the chordline
