NIFE Aerodynamics - Unit 1 Exam
Questions And Answers
/. Vector - Answer-✅A quantity that has magnitude and direction. Resultant vector may
be divided into separate components.
/.Density (rho) - Answer-✅Mass per unit volume
/.Moment - Answer-✅A rotational force around a point or axis
/.Equilibrium Flight - Answer-✅Exists when the sum of all forces and the sum of all
moments around the center of gravity are equal to zero.
/.Trimmed Flight - Answer-✅Exists when the sum of all moments around the center of
gravity is equal to zero.
/.Temperature vs Altitude - Answer-✅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 - Answer-✅As humidity increases, air density decreases
/.General Gas Law - Answer-✅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 - Answer-✅Exists if at every point in the airflow static pressure, density,
temperature, and velocity remain constant over time.
/.Continuity equation - Answer-✅A1V1=A2V2
/.Bernoulli's Equation - Answer-✅Total pressure (Pt) equals static pressure (Ps) plus
dynamic pressure (q)
Pt=Ps+q
q=(1/2)*ρ*(V^2)
/.Order of Airspeeds - Answer-✅Indicated Airspeed (IAS)
Calibrated Airspeed (CAS)
Equivalent Airspeed (EAS)
Questions And Answers
/. Vector - Answer-✅A quantity that has magnitude and direction. Resultant vector may
be divided into separate components.
/.Density (rho) - Answer-✅Mass per unit volume
/.Moment - Answer-✅A rotational force around a point or axis
/.Equilibrium Flight - Answer-✅Exists when the sum of all forces and the sum of all
moments around the center of gravity are equal to zero.
/.Trimmed Flight - Answer-✅Exists when the sum of all moments around the center of
gravity is equal to zero.
/.Temperature vs Altitude - Answer-✅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 - Answer-✅As humidity increases, air density decreases
/.General Gas Law - Answer-✅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 - Answer-✅Exists if at every point in the airflow static pressure, density,
temperature, and velocity remain constant over time.
/.Continuity equation - Answer-✅A1V1=A2V2
/.Bernoulli's Equation - Answer-✅Total pressure (Pt) equals static pressure (Ps) plus
dynamic pressure (q)
Pt=Ps+q
q=(1/2)*ρ*(V^2)
/.Order of Airspeeds - Answer-✅Indicated Airspeed (IAS)
Calibrated Airspeed (CAS)
Equivalent Airspeed (EAS)
