Aerospace Engineering Midterm Exam
Questions And Answers 2025 Update
Small-hinged sections on the outboard portion of a wing that are used to generate a rolling
motion for an aircraft. - Answer✔Aileron
Any surface, such as a wing, which provides aerodynamic force when it interacts with a moving
stream of air. - Answer✔Airfoil
The angle formed by the wing chord line and the relative wind. - Answer✔Angle of Attack
The relationship between the length and width of a wing. - Answer✔Aspect Ratio
A thin layer of air next to the surface of an airfoil which shows a reduction in speed due to the
air's viscosity - Answer✔Boundary Layer
The common reference point for the three axes of the aircraft. - Answer✔Center of Gravity
The space in the fuselage of a small airplane containing seats for the pilot, copilot, and
sometimes passengers. - Answer✔Cockpit
The capability of an aircraft to respond to your flight inputs, especially with regard to attitude
and flight path. - Answer✔Controllability
The mounting of wings so that the wingtips and higher than the wingroot. - Answer✔Dihedral
Acts in the opposite direction of flight, opposes the forward-acting force of thrust, and limits
the forward speed of the aircraft. - Answer✔Drag
Out of its own accord, an aircraft eventually returns to and remains at its equilibrium position
over a period of time. - Answer✔Dynamic Stability
A rear horizontal stabilizer that controls up and down or pitching motion of the aircraft nose. -
Answer✔Elevator
The tail assembly of an aircraft, including the horizontal and vertical stabilizers, elevators and
rudder. - Answer✔Empennage
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Control surfaces attached to the trailing edge of the wing extending outward from the fuselage
to the midpoint of each wing. Flaps can increase the lifting efficiency of the wing and decrease
stall speed. - Answer✔Flaps
Houses the cabin, the cockpit and is a common attachment point for the other major
components. - Answer✔Fuselage
An aircraft that is designed to fly without an engine - Answer✔Glider
A structure that creates up and down forces at the tail to keep the fuselage aligned in pitch with
the relative wind. The structure itself is horizontal while the forces it creates are vertical. -
Answer✔Horizontal Stabilizer
Aircraft speeds between Mach 10 and 25. - Answer✔High hypersonic
Aircraft speeds between Mach 5 and 10. - Answer✔Hypersonic
The flat surfaces located behind the center of gravity tend to weathervane with the wind. -
Answer✔Keel Effect
The rate at which temperature decreases with an increase in altitude. - Answer✔Lapse Rate
The horizontal line that passes through the center of gravity of the aircraft, perpendicular to its
flight path. - Answer✔Lateral Axis
The part of the airfoil that meets the airflow first. - Answer✔Leading Edge
The force that created by the effect of airflow as it passes over and under the wing. -
Answer✔Lift
A straight line parallel to the length of the fuselage but that runs through the aircraft's center of
gravity. - Answer✔Longitudinal Axis
Mach. A decimal number representing the true airspeed relationship to the local speed of
sound. - Answer✔M
Characteristic of the aircraft that permits you to maneuver it easily and allows it to withstand
the stress resulting from the maneuver. - Answer✔Maneuverability
Motion around the lateral axis caused by deflection in the elevator controlled by moving the
yoke forward and aft. - Answer✔Pitch
Consists of both the engine and propeller in a small airplane. - Answer✔Powerplant
Aircraft stability is the characteristic of an airplane in flight that causes it to return to a
condition of equilibrium, or steady flight, after it is disturbed. - Answer✔Stability
Caused by the separation of airflow from the wing's upper surface resulting in a rapid decrease
in lift. - Answer✔Stall
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