NIFE-AERO ELO's, Questions, & Equations
UPDATED ACTUAL Exam Questions and
CORRECT Answers
LESSON 1 - Basic Theory & Lift Production - CORRECT ANSWER - Lesson 1
DEFINE - Vector - CORRECT ANSWER - Quantity that represents magnitude and
direction. Resultant vector may be divided into separate components
DEFINE - Air Density - CORRECT ANSWER - Air particles within a given volume.
DEFINE - Moment - CORRECT ANSWER - Created when a force is applied at some
perpendicular distance from a rotation point
STATE - Requirements for an airplane to be in equilibrium flight - CORRECT
ANSWER - Sum of all forces and moments is zero about CoG
STATE - Requirements for an airplane to be in trimmed flight - CORRECT ANSWER -
Sum of all (just) moments is zero - think of a constant turn rate
DESCRIBE - Relationship between temperature and altitude - CORRECT ANSWER -
Decreases 2 degrees/1,000' up to 36,000' (Lapse Rate). P=pRT
DESCRIBE - Relationship between humidity and air density - CORRECT ANSWER - As
humidity increases, air density decreases. H2O < O2
STATE - General Gas Law - CORRECT ANSWER - P=pRT
, DEFINE - Steady Airflow - CORRECT ANSWER - P, p, Temp, V stay constant at each
particular point in streamtube
EXPLAIN - Continuity Equation - CORRECT ANSWER - A1V1=A2V2
EXPLAIN - Bernoulli's Equation - CORRECT ANSWER - Pt = Ps + Pd, Pd = q =
1/2pV^2
EXPLAIN - Different Types of Airspeeds (I in ICE-TG) - CORRECT ANSWER - IAS -
Indicated Airspeed - Instrument airspeed for amount of aircraft dynamic pressure (q). Measured
in KIAS.
EXPLAIN - Different Types of Airspeeds (C in ICE-TG) - CORRECT ANSWER - CAS -
Calibrated Airspeed - IAS corrected for position/instrument error.
EXPLAIN - Different Types of Airspeeds (E in ICE-TG) - CORRECT ANSWER - EAS -
Equivalent Airspeed - CAS corrected for compressibility error
EXPLAIN - Different Types of Airspeeds (T in ICE-TG) - CORRECT ANSWER - TAS -
True Airspeed - EAS corrected for density. Actual velocity through volume of air. TAS =
sqrt(p0/p)*IAS
EXPLAIN - Different Types of Airspeeds (G in ICE-TG) - CORRECT ANSWER - GS -
Ground speed - TAS corrected for wind.
DEFINE - Mean Camber Line (MCL) - CORRECT ANSWER - Line from the Leading
Edge to Trailing Edge that is halfway between upper and lower surfaces of the airfoil
DEFINE - Chord - CORRECT ANSWER - The straight line from the Leading Edge to the
Trailing Edge.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
LESSON 1 - Basic Theory & Lift Production - CORRECT ANSWER - Lesson 1
DEFINE - Vector - CORRECT ANSWER - Quantity that represents magnitude and
direction. Resultant vector may be divided into separate components
DEFINE - Air Density - CORRECT ANSWER - Air particles within a given volume.
DEFINE - Moment - CORRECT ANSWER - Created when a force is applied at some
perpendicular distance from a rotation point
STATE - Requirements for an airplane to be in equilibrium flight - CORRECT
ANSWER - Sum of all forces and moments is zero about CoG
STATE - Requirements for an airplane to be in trimmed flight - CORRECT ANSWER -
Sum of all (just) moments is zero - think of a constant turn rate
DESCRIBE - Relationship between temperature and altitude - CORRECT ANSWER -
Decreases 2 degrees/1,000' up to 36,000' (Lapse Rate). P=pRT
DESCRIBE - Relationship between humidity and air density - CORRECT ANSWER - As
humidity increases, air density decreases. H2O < O2
STATE - General Gas Law - CORRECT ANSWER - P=pRT
, DEFINE - Steady Airflow - CORRECT ANSWER - P, p, Temp, V stay constant at each
particular point in streamtube
EXPLAIN - Continuity Equation - CORRECT ANSWER - A1V1=A2V2
EXPLAIN - Bernoulli's Equation - CORRECT ANSWER - Pt = Ps + Pd, Pd = q =
1/2pV^2
EXPLAIN - Different Types of Airspeeds (I in ICE-TG) - CORRECT ANSWER - IAS -
Indicated Airspeed - Instrument airspeed for amount of aircraft dynamic pressure (q). Measured
in KIAS.
EXPLAIN - Different Types of Airspeeds (C in ICE-TG) - CORRECT ANSWER - CAS -
Calibrated Airspeed - IAS corrected for position/instrument error.
EXPLAIN - Different Types of Airspeeds (E in ICE-TG) - CORRECT ANSWER - EAS -
Equivalent Airspeed - CAS corrected for compressibility error
EXPLAIN - Different Types of Airspeeds (T in ICE-TG) - CORRECT ANSWER - TAS -
True Airspeed - EAS corrected for density. Actual velocity through volume of air. TAS =
sqrt(p0/p)*IAS
EXPLAIN - Different Types of Airspeeds (G in ICE-TG) - CORRECT ANSWER - GS -
Ground speed - TAS corrected for wind.
DEFINE - Mean Camber Line (MCL) - CORRECT ANSWER - Line from the Leading
Edge to Trailing Edge that is halfway between upper and lower surfaces of the airfoil
DEFINE - Chord - CORRECT ANSWER - The straight line from the Leading Edge to the
Trailing Edge.
