2024\2025 Grade 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
- correct answer (D) Kinetic energy can be traded for potential energy, and potential energy can be
traded for kinetic energy
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
- correct answer (D) All of the above
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
- correct answer (C) Drag increses because of increased induced drag
A jet pilot flying at L/D Max is obtain best:
(A) Range
(B) Endurance
(C) Ride Quality
- correct answer (B) Endurance
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
- correct answer (A) Parasite
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
- correct answer (D) All of the above
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
- correct answer (C) A severe moment or "Mach Tuck
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.
- correct answer (A) The air temperature decreases.
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.
- correct answer (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.
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
- correct answer (C) An active stability augmentation system/yaw damper
Swept wings cause a significant:
(A) increase in effectiveness of flaps.