AE Final Exam Questions and Answers: Aviation Terminology, Exams of Engineering

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Aileron - correct answer Small-hinged sections on the outboard portion of a wing that are used to generate a rolling motion for an aircraft. Airfoil - correct answer Any surface, such as a wing, which provides aerodynamic force when it interacts with a moving stream of air. Angle of Attack - correct answer The angle formed by the wing chord line and the relative wind. Aspect Ratio - correct answer The relationship between the length and width of a wing. Boundary Layer - correct answer A thin layer of air next to the surface of an airfoil which shows a reduction in speed due to the air's viscosity. Center of Gravity - correct answer The common reference point for the three axes of the aircraft.

Cockpit - correct answer The space in the fuselage of a small airplane containing seats for the pilot, copilot, and sometimes passengers. Controllability - correct answer The capability of an aircraft to respond to your flight inputs, especially with regard to attitude and flight path. Dihedral - correct answer The mounting of wings so that the wingtips and higher than the wingroot. Drag - correct answer Acts in the opposite direction of flight, opposes the forward-acting force of thrust, and limits the forward speed of the aircraft. Elevator - correct answer A rear horizontal stabilizer that controls up and down or pitching motion of the aircraft nose. Empennage - correct answer The tail assembly of an aircraft, including the horizontal and vertical stabilizers, elevators, and rudder.

Flaps - correct answer Control surfaces attached to the trailing edge of the wing extending outward from the fuselage to the midpoint of each wing. Can increase the lifting efficiency of the wing and decrease stall speed. Fuselage - correct answer Houses the cabin, the cockpit and is a common attachment point for the other major components. Glider - correct answer An aircraft that is designed to fly without an engine. Horizontal Stabilizer - correct answer 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. High Hypersonic - correct answer Aircraft speeds between Mach 10 and 25. Hypersonic - correct answer Aircraft speeds between Mach 5 and 10.

Keel Effect - correct answer The flat surfaces located behind the center of gravity tend to weathervane with the wind. Lapse Rate - correct answer The rate at which temperature decreases with an increase in altitude. Lateral Axis - correct answer The horizontal line that passes through the center of gravity of the aircraft, perpendicular to its flight path. Leading Edge - correct answer The part of the airfoil that meets the airflow first. Lift - correct answer The force that created by the effect of airflow as it passes over and under the wing. Longitudinal Axis - correct answer A straight line parallel to the length of the fuselage but that runs through the aircraft's center of gravity.

Mach - correct answer A decimal number representing the true airspeed relationship to the local speed of sound. Maneuverability - correct answer Characteristic of the aircraft that permits you to maneuver it easily and allows it to withstand the stress resulting from the maneuver. Pitch - correct answer Motion around the lateral axis caused by deflection in the elevator controlled by moving the yoke forward and aft. Powerplant - correct answer Consists of both the engine and propeller in a small airplane. Stability - correct answer The characteristic of an airplane in flight that causes it to return to a condition of equilibrium, or steady flight, after it is disturbed. Stall - correct answer Caused by the separation of airflow from the wing's upper surface resulting in a rapid decrease in lift.

Subsonic - correct answer Aircraft speeds under Mach 1. Supersonic - correct answer Aircraft speeds between Mach 1 and 5. Taper - correct answer A reduction in the chord of a wing as measured from the root to the tip of the wing. Thrust - correct answer Forward-acting force which opposes drag and propels the aircraft through the air. Trailing Edge - correct answer The last point on an airfoil that interacts with the airflow around the wing. Roll - correct answer Rolling motion about the longitudinal axis caused by ailerons deflecting in opposite directions and controlled by twisting the yoke.

Rudder - correct answer A rear vertical stabilizer that controls side- to-side or yawing motion of the aircraft nose. Vertical Axis - correct answer A straight line through the center of gravity of the aircraft and at 90° to lateral and longitudinal axis. Vertical Stabilizer - correct answer A structure that creates left to right forces to keep the fuselage aligned in yaw with the relative wind. The structure itself is vertical while the forces it creates are horizontal. Wash In/Wash Out - correct answer A built in twist in the wing so that the trailing edge at the wingtip is raised (Wash out) or lowered (Wash in). This significantly affects the slow flight and stall characteristics of the wing. Weight - correct answer A force caused by the gravitational attraction of the Earth Wing - correct answer Generates the lifting force that helps the airplane fly when air flows around it.

Wing Planform - correct answer The outline shape of a wing when viewed from above. Wing Span - correct answer The distance from wing tip to wing tip of a wing planform. Yaw - correct answer The movement about the vertical axis produced by the rudder and controlled by pedals. Date of first flight - correct answer December 17, 1903 builders of First plane - correct answer Wright Brothers Low Earth Orbit - correct answer LEO Polar Orbit - correct answer Orbit 90 degrees from the equator

90 minutes - correct answer How long a LEO takes to go around the earth GEO - correct answer zero degrees. orbits above equator Geostationary Earth Orbit - correct answer GEO Medium Earth Orbit - correct answer MEO Highly Elliptical Earth Orbit - correct answer HEO Molniya Orbit - correct answer Moly Molniya Orbit - correct answer Highly elliptical. Used mostly over Russia. Johannes Kepler - correct answer discovered that the paths of the planets around the sun are elliptical rather that circular

First person to go supersonic - correct answer Chuck Yeager Bell X-1 - correct answer First plane to go supersonic satellite - correct answer An object that revolves around another object in space Aristotle - correct answer studied the motion of the planets in the night sky Nicolaus Copernicus - correct answer First to theorize that the Earth and other planets actually revolved about the Sun Tycho Brahe - correct answer Danish astronomer who collected data to prove that Copernicus was correct Robert Hooke - correct answer Debated Newton on facts about orbital mechanics

Isaac Newton - correct answer deduced the existence of an inverse square law attractive force. Proposed Theory of Universal Gravitation Yuri Gagar in 1961 - correct answer First man in space Date of moon landing - correct answer July 20th, 1969 Neil Armstrong - correct answer First man on the moon Saturn V - correct answer Rocket that went to the moon concord - correct answer supersonic commercial airliner SR-71 Blackbird - correct answer fastest manned aircraft