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Level 4 Air Cadet Aviation Exam Questions with Detailed
Verified Answers
25 Ans: ✓ ✓ ✓ The thickest part of the conventional airfoil occurs at __% of the chord.
50 Ans: ✓ ✓ ✓ The thickest part of a laminar flow airfoil occurs at __% of the chord.
Boundary Layer Ans: ✓ ✓ ✓ The very thin layer of air lying over the surface of the wing.
Laminar Layer Ans: ✓ ✓ ✓ The area at the front of the wing where air flows smoothly over the
surface.
Turbulent Layer Ans: ✓ ✓ ✓ The area further along the wing where air slows down due to friction
and becomes turbulent.
Transition Point Ans: ✓ ✓ ✓ The point where laminar flow changes to turbulent flow.
Aspect Ratio Ans: ✓ ✓ ✓ The relationship between the length of the wing and its width, calculated
by dividing the wingspan by the average chord (Leading edge to trailing edge).
Angle of Incidence Ans: ✓ ✓ ✓ The angle at which the wing is permanently inclined to the
longitudinal axis of the wing.
Wash-Out Ans: ✓ ✓ ✓ Decrease of the angle of incidence at the wingtip. (ex. Installing wingtip fuel
tanks, using winglets, drooping the wingtips, etc.)
Wash-In Ans: ✓ ✓ ✓ Increase of the angle of incidence at the wingtip. (ex. Installing wingtip fuel
tanks, using winglets, drooping the wingtips, etc.)
Slats Ans: ✓ ✓ ✓ Auxiliary airfoils that automatically move out in front of the leading edge of the
wing at high angles of attack, to improve low speed stability/handling.
Slots Ans: ✓ ✓ ✓ Auxiliary airfoils that DO NOT move, they are passageways built in the wing, but
serve the same purpose as slats.
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Pitot Pressure Ans: ✓ ✓ ✓ The increase in air pressure caused by the forward motion of the
aircraft through the air.
Static Pressure Ans: ✓ ✓ ✓ The atmospheric pressure outside of the aircraft, not affected by
motion or turbulence.
Altimeter and Vertical Speed Indicator Ans: ✓ ✓ ✓ Relies exclusively on static pressure.
Airspeed Indicator Ans: ✓ ✓ ✓ Relies on both pitot and static pressure. (hint: ASI)
Red Ans: ✓ ✓ ✓ Never Exceed Speed (Altimeter colour indication).
Yellow Ans: ✓ ✓ ✓ Caution Range (Altimeter colour indication).
Green Ans: ✓ ✓ ✓ Normal Operating Range (Airspeed colour indication).
White Ans: ✓ ✓ ✓ Range that fully extended flaps may be used (Airspeed colour indication).
Density Error Ans: ✓ ✓ ✓ Temperature and pressure normally decrease when increasing altitude,
decreasing the density of air and causing the ASI to read less than true airspeed. This is called:
_______ _____.
Indicated Airspeed Ans: ✓ ✓ ✓ Uncorrected airspeed as read from the ASI (hint: IAS).
Calibrated Airspeed Ans: ✓ ✓ ✓ IAS corrected for position error (hint: CAS).
Equivalent Airspeed Ans: ✓ ✓ ✓ CAS corrected for compressibility (hint: EAS).
True Airspeed Ans: ✓ ✓ ✓ EAS corrected for density (hint: TAS).
Altimeter Ans: ✓ ✓ ✓ Indicates altitude of aircraft.
Pressure Error Ans: ✓ ✓ ✓ Barometric pressure varies from location to location which affects the
altimeter. This is called: ________ _____.
This corrected for by the use of an altimeter setting (hint: "From high to low, look out below:).
Vertical Speed Indicator Ans: ✓ ✓ ✓ Measures the rate of change in static pressure and indicates if
the altitude is increasing or decreasing (hint: VSI).
© Get it right 2025 Getaway - Stuvia US All rights reserved
Level 4 Air Cadet Aviation Exam Questions with Detailed
Verified Answers
25 Ans: ✓ ✓ ✓ The thickest part of the conventional airfoil occurs at __% of the chord.
50 Ans: ✓ ✓ ✓ The thickest part of a laminar flow airfoil occurs at __% of the chord.
Boundary Layer Ans: ✓ ✓ ✓ The very thin layer of air lying over the surface of the wing.
Laminar Layer Ans: ✓ ✓ ✓ The area at the front of the wing where air flows smoothly over the
surface.
Turbulent Layer Ans: ✓ ✓ ✓ The area further along the wing where air slows down due to friction
and becomes turbulent.
Transition Point Ans: ✓ ✓ ✓ The point where laminar flow changes to turbulent flow.
Aspect Ratio Ans: ✓ ✓ ✓ The relationship between the length of the wing and its width, calculated
by dividing the wingspan by the average chord (Leading edge to trailing edge).
Angle of Incidence Ans: ✓ ✓ ✓ The angle at which the wing is permanently inclined to the
longitudinal axis of the wing.
Wash-Out Ans: ✓ ✓ ✓ Decrease of the angle of incidence at the wingtip. (ex. Installing wingtip fuel
tanks, using winglets, drooping the wingtips, etc.)
Wash-In Ans: ✓ ✓ ✓ Increase of the angle of incidence at the wingtip. (ex. Installing wingtip fuel
tanks, using winglets, drooping the wingtips, etc.)
Slats Ans: ✓ ✓ ✓ Auxiliary airfoils that automatically move out in front of the leading edge of the
wing at high angles of attack, to improve low speed stability/handling.
Slots Ans: ✓ ✓ ✓ Auxiliary airfoils that DO NOT move, they are passageways built in the wing, but
serve the same purpose as slats.
© Get it right 2025 Getaway - Stuvia US All rights reserved
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Pitot Pressure Ans: ✓ ✓ ✓ The increase in air pressure caused by the forward motion of the
aircraft through the air.
Static Pressure Ans: ✓ ✓ ✓ The atmospheric pressure outside of the aircraft, not affected by
motion or turbulence.
Altimeter and Vertical Speed Indicator Ans: ✓ ✓ ✓ Relies exclusively on static pressure.
Airspeed Indicator Ans: ✓ ✓ ✓ Relies on both pitot and static pressure. (hint: ASI)
Red Ans: ✓ ✓ ✓ Never Exceed Speed (Altimeter colour indication).
Yellow Ans: ✓ ✓ ✓ Caution Range (Altimeter colour indication).
Green Ans: ✓ ✓ ✓ Normal Operating Range (Airspeed colour indication).
White Ans: ✓ ✓ ✓ Range that fully extended flaps may be used (Airspeed colour indication).
Density Error Ans: ✓ ✓ ✓ Temperature and pressure normally decrease when increasing altitude,
decreasing the density of air and causing the ASI to read less than true airspeed. This is called:
_______ _____.
Indicated Airspeed Ans: ✓ ✓ ✓ Uncorrected airspeed as read from the ASI (hint: IAS).
Calibrated Airspeed Ans: ✓ ✓ ✓ IAS corrected for position error (hint: CAS).
Equivalent Airspeed Ans: ✓ ✓ ✓ CAS corrected for compressibility (hint: EAS).
True Airspeed Ans: ✓ ✓ ✓ EAS corrected for density (hint: TAS).
Altimeter Ans: ✓ ✓ ✓ Indicates altitude of aircraft.
Pressure Error Ans: ✓ ✓ ✓ Barometric pressure varies from location to location which affects the
altimeter. This is called: ________ _____.
This corrected for by the use of an altimeter setting (hint: "From high to low, look out below:).
Vertical Speed Indicator Ans: ✓ ✓ ✓ Measures the rate of change in static pressure and indicates if
the altitude is increasing or decreasing (hint: VSI).
© Get it right 2025 Getaway - Stuvia US All rights reserved
