RATIONALES WITH |VERIFIED & REVISED ANSWERS
(NEW) 2025/VERIFIED AND GRADED A+
Which of the following statements regarding energy is true?
(A) Kinetic energy decreases with increasing airspeed.
(B) Potential energy is approximately proportional to airspeed.
(C) Chemical energy remains constant throughout a flight
(D) Kinetic energy can be traded for potential energy, and potential energy can be traded for kinetic
energy
Ans: (D) Kinetic energy can be traded for potential energy, and potential energy can be traded for
kinetic energy
Qiz The objective in maneuvering the airplane is to manage energy so that:
(A) Kinetic energy stays between limits (stall and placard)
(B) Potential energy sstays between limits (terrain and buffet altitude)
(C) Chemical energy stays above certain thresholds (not running out of fuel)
(D) All of the above
Ans: (D) All of the above
,Qiz What is the effect on total drag is airspeed slows below L/D Max?
(A) Drag increases because of increased parasite drag
(B) Drag decreases because of lower induced drag
(C) Drag increases because of increased induced drag
Ans: (C) Drag increses because of increased induced drag
Qiz A jet pilot flying at L/D Max is obtain best:
(A) Range
(B) Endurance
(C) Ride Quality
Ans: (B) Endurance
Qiz When a jet aircraft is flown at the appropriate airspeed for maximum range, which type of drag
predominates?
(A) Parasite
(B) Induced
(C) Each type of drag contributes equally
Ans: (A) Parasite
,Qiz While already at high speed, what happens if Mach is allowed to increase?
(A) Airflow over parts of the airplane begin to exceed the speed of sound
(B) Shock waves can cause local airflow separation
(C) Characteristics such as pitch-up, pitch-down, or buffeting may occur.
(D) All of the above
Ans: (D) All of the above
Qiz What is the result of a shock-induced separation of airflow occurring symmetrically near the wing
root of a swept wing aircraft?
(A) A high-speed stall and sudden pitch-up
(B) Severe porpoising.
(C) A severe moment or "Mach Tuck
Ans: (C) A severe moment or "Mach Tuck
Qiz The speed of sound generally decreases with increasing altitude. This occurs because:
(A) The air temperature decreases.
(B) The air pressure decreases.
(C) The composition of the air changes.
Ans: (A) The air temperature decreases.
, Qiz Critical Mach number can be defined as:
(A) The speed at which the aircraft is traveling faster than sound.
(B) The maximum Mach number at which an aircraft may be safely operated.
(C) The speed of an aicraft in which airflow over any part of the aircraft or structure first reaches, but
doesn't exceed, Mach 1.0.
Ans: (C) The speed of an aicraft in which airflow over any part of the aircraft or structure first reaches,
but doesn't exceed, Mach 1.0.
Qiz Stability in the vertical axis tends to drive the sideslip angle toward zero. The most dynamic stability
about the vertical axis on modern jet transports is from:
(A) The vertical fin
(B) The rudder
(C) An active stability augmentation system/yaw damper
(D) Pilot roll input
Ans: (C) An active stability augmentation system/yaw damper
Qiz Swept wings cause a significant:
(A) increase in effectiveness of flaps.
(B) Reduction in effectiveness of flaps
(C) flap actuation reliability issue
Ans: (B) Reduction in effectiveness of flaps