AT 116 FINAL
Which of the following is NOT one of the ways that swept back wings provide yaw stability for an aircraft that inadvertently yaws to the right. A - The wing left wing tip produces more induced drag and that pulls the aircraft back left. B - The lift becomes greater on the right wing and the airplane rolls and then yaws back to the left. C - The parasite drag becomes greater on the left wing and the aircraft yaws back left and flies straight.
A
Which of the following is true of Bernoulli's principle? A. The Bernoulli principle acts perpendicular to the relative wind. B. Bernoulli's principle is the same as lift. C. The Bernoulli effect becomes greater as the venturi size gets larger.
A
Why would we want anhedral on a wing? A - The aircraft has a very heavy and low center of gravity. B - It makes the aircraft more stable than dihedral. C - The wing withstands greater G-forces than a wing with dihedral.
A
An aircraft equipped with a tailwheel is considered to have what kind of landing gear? A. Tricycle B. Conventional C. Bicycle D. Quadracycle
B
Fuselage station 0.0 is called what? A. Butt line B. Datum C. Waterline
B
How does dihedral make an airplane stable? (Be careful there is some tricky wording in this question.) A - It moves the center of gravity aft allowing the lift to directly oppose gravity. B - The wing that falls, results in a Bernoulli force that directly opposes gravity, and lifts the wing back up. C - The actual Bernoulli aerodynamic force diminishes on the rising wing and the wing falls.
B
How does the wing tip vortex create "drag"? A. The turbulence of the swirling vortex creates low pressure areas at the wing tips. B. The mixing of the high pressure into the low pressure reduces the differential pressure between the top of the wing and the bottom of the wing. C. The vortex adds to the friction of the air passing over the wing. D. The vortex tips the lift vector slightly backwards
B
Motion around the vertical axis is called what? A. Pitch B. Yaw C. Roll or Bank D. None of these answers is correct
B
Movement of the control yoke forward and backward moves which control surface? A. Trim tab B. Elevator C. Rudder D. Aileron
B
The short stiffeners are called what in a fuselage or wing? A. Ribs B. Stringers C. Longerons D. Spars
B
What causes ground effect in a fixed wing aircraft? A - Air flowing over the wing creates downwash which pushes against the ground to lift the aircraft. B - Air gets trapped under the wing and artificially raises the pressure under the wing. C - The Bernoulli effect is more pronounced when the aircraft is close to the ground. D - None of the above are true.
B
What is the definition of a "chord line"? A. It is the curved shape over the top of the wing. B. it is a line that runs from the leading edge of the wing to the trailing edge of the wing. C. It is the direction the air flows around the wing.
B
What is the definition of a stall? A. The aircraft engine stops running. B. The airflow over the wing no longer stays attached to the wing. C. The air is flowing too slowly across the wings.
B
What is the problem with a plain flap? A. The flap creates too much drag. B. The air does not stay attached to the top of the flap when the flap is extended down too much. C. The lift is created in the wrong place on the wing. D. The flap is an expensive and delicate flap/to build and use.
B
What is the relationship between the Center of Pressure and the Center of Gravity? A. The Center of Pressure should be at the same location as the Center of Gravity. B. The Center of Pressure should be aft of the Center of Gravity. C. The Center of Pressure should be forward of the Center of Gravity.
B
Which of the following is NOT a purpose for having the camber on the BOTTOM of the wing? A. It improves the ability of the wing to fly upside down. B. It reduces the induced drag on the wing. C. It creates a smooth rounded leading edge on the wing. D. It allows aerodynamicists to shape the wing to manipulate where lift is produced along the wing chord.
B
Which of the following is NOT a way to increase the camber of the airflow over the top of the wing? A. Increase the camber shape of the top of the wing. B. Increase the angle of attack of the wing. C. Make the relative wind flow upward toward the wing. D. Increase the airflow (airspeed) of the air flowing over the wing.
B
Which of the following is NOT factor in flight control effectiveness? A. Camber of the wing. B. Distance from the Center of Gravity C. Air velocity. D. Size of the flight control.
B
Which of the following is most effective at making lift? a. Plain flap b. Slotted flap c. Split flap d. Fowler flap
B
Which of the following is the name for the imaginary line that runs from the leading edge of the wing to the trailing edge of the wing? A. Camber line B. Chord line C. Relative wind line D. Lift line
B
Which of the following is true of the performance of an airfoil? A. The size of the airfoil determines its lift performance. B. The shape of the airfoil determines its lift performance. C. The speed of the air determines its lift performance.
B
Which of the following is used primarily to create drag? a. Fowler flap b. Split flap c. Slotted flap d. Plain flap
B
"Starboard" means what? A. Toward the front of the aircraft. B. Toward the back of the aircraft. C. Toward the right side of the aircraft. D. Toward the left side of the aircraft.
C
How do you reduce Interference Drag? A. Make the aircraft skin smoother. B. Reduce the frontal area of the object. C. Add fillets and fairings. D. None of these answers are correct.
C
If an aircraft has neutral DYNAMIC stability, which is true of the aircraft? A - The aircraft attempts to return to straight and level but constantly over shoots and continues to oscillate at a constant rate. B - The aircraft does not display any tendency to return to straight and level but stays at whatever attitude it is placed. C - The aircraft returns to straight and level flight through a series of constantly reducing oscillations. D - The aircraft does not remain at straight and level without constant attention.
C
The plural of the word aircraft is what? A. Aircraft's B. Aircrafts C. Aircraft D. Aircraften
C
The purpose of wing flaps are to do what? A. Increase lift B. Increase drag C. Increase lift and drag D. Increase lift and reduce drag
C
The tail assembly is called what? A. Nacelle B. Fin C. Empanage D. Longeron
C
What drag results from the creation of lift? A. Pressure Drag B. Correcedent Drag C. Induced Drag D. Interference Drag
C
Which of the following is NOT one of the ways that an airplane gains stability around the vertical axis? A - Use a vertical stabilizer near the back of the aircraft. B - Use swept back wings. C - Move the center of gravity behind the center of lift.
C
Which of the following is a problem with a supercritical wing shape? A. Leading edge damage, or ice, more greatly affects the airflow over the wing. B. Lift is concentrated around one spot near the trailing edge of the wing. C. The wing is not as strong as a traditionally cambered wing. D. The low pressure on top of the wing is concentrated around one spot on the wing.
C
Which of the following is true of the maximum lift produced by a high aspect ratio wing? A. The high aspect ratio wing produces more lift than a low aspect ratio wing of the same surface area. B. The high aspect ratio wing is stronger than a low aspect ratio wing. C. The high aspect ratio wing produces its peak lift over a more narrow range of AOA than does a low aspect ratio wing.
C
Which of the following is true of the pressure wave generated by the wing tip vortex? A. It is perpendicular to the relative wind. B. It decreases in strength as the vortex gets stronger. C. It moves ahead of the wing at subsonic speeds. D. It reduces the effect of the drag vector.
C
How can you reduce the pressure drag on an object? A. Make the object smoother. B. Reduce the frontal area on the object. C. Add a "boat tail" to the object. D. Both b and c.
D
How do we create yaw stability on an aircraft? A - Put a vertical stabilizer on the tail of the aircraft. B - Sweep the wings backwards. C - Use dihedral wing angle D - Only a and b are correct.
D
The angle between the chord line of the wing and the longitudinal axis of the aircraft is called what? A. Angle of Attack B. Differential angle C. Positive pressure angle D. Angle of Incidence
D
The vertical wall in a fuselage is called what? A. Former B. Stringer C. Empenage D. Bulkhead.
D
What is the difference between a winglet and a sharklet? A. There is no real difference. B. A winglet sticks up and a sharklet hangs down. C. The winglet was developed for Boeing and the sharklet was developed for Airbus. D. Both a. and c.
D
What produces pitch stability on a standard aircraft? A - The tail adds drag to the aircraft. B - The horizontalstabilizer pulls downward. C - The horizontal stabilizer constantly changes AOA with pitch to dampen the pitching motion. D - Both b and c are correct.
D
Which flight control affects roll? A. Trim tab B. Elevator C. Rudder D. Aileron
D
Which of the following is NOT an advantage of a high wing aircraft? A - Better lift/drag ratio B - Better lateral (roll) stability C - Shorter landing distance D - Easier to build strong landing gear support
D
Aileron control produces which kind of stability? A. Lateral B. Longitudinal C. Directional D. Horizontal
A
If an aircraft has positive STATIC stability, which is true of the aircraft? a - The aircraft attempts to return to straight and level but constantly over shoots and continues to oscillate at a constant rate b - The aircraft does not display any tendency to return to straight and level but stays at whatever attitude it is placed. c - Displays a tendency to want to return to straight and level. d - The aircraft does not remain at straight and level without constant attention
A
Measurements going span wise on and aircraft are called what? A. Wing stations B. Waterlines C. Fuselage stations D. Lateral stations
A
The "body" of the aircraft is called what? A. Fuselage B. Empenage C. Spar D. Former
A
The vertical surface that protrudes above the aircraft, in front of the vertical tail, is called what? A. Dorsal fin B. Ventral fin C. Vertical stabilizer D. Horizontal Stabilizer
A
What is the disadvantage of a high aspect ratio wing? A. The maneuverability of the aircraft decreases. B. The wing creates poor lift. C. The wing creates additional induced drag.
A
What is the relationship of the Bernoulli Vector (lift) with regard to the relative wind? A. Perpendicular B. Parallel C. At an acute angle D. Inversely proportional
A
What makes the slotted flap a preferred flap? A. The slot keeps the air attached to the top of the flap B. Drag is dramatically reduced. C. The flap is a simple and robust design D. The flap makes the wing surface area bigger
A
When deploying trailing edge flaps which of the following is true? A. AOA increases B. AOA decreases C. AOA stays the same
A
Which of the following is NOT a way to increase the effective aspect ratio of a wing? A. Add vortex generators. B. Create a joined wing design. C. Put drooping tips or end plates on the wing tip. D. Add missile launchers or fuel tanks at the wing tip.
A
Which of the following is the correct formula for lift? A. Lift = CL (0.5) (S) (V2) (p) B. Lift = CL (0.5) + (S) (V2) (p) C. Lift = CL (0.5) (S) (V2) / (p)
A
"Aft" means what? A. Toward the front of the aircraft. B. Toward the back of the aircraft. C. Toward the right side of the aircraft. D. Toward the left side of the aircraft.
B
The beam in a wing that carries the lift loads back to the fuselage is called what? A. Rib B. Mast C. Spar D. Longeron
C
True or False, All perspectives of port, starboard, forward, and aft are from the pilot's point of view.
True
True or False, Wing ribs give the wing its airfoil shape.
True
True or False: "Differential ailerons" fixes adverse vaw.
True
True or False: A "blown flap" is a flap where air is artificially blown over the flap using turbine engine compressed air or turbine engipe exhaust.
True
True or False: A winglet creates "Thrust".
True
True or False: AOA directly influences CL
True
True or False: As bank angle increases, G-forces increase.
True
True or False: If thrust is equals drag the aircraft moves at a constant speed.
True
True or False: NACA was tasked bythe Us Congress in 1917 to study airfoils and to categorize them by the airfoils' lift and drag characteristics.
True
True or False: Pitch stability is considered to be longitudinal stability.
True
True or False: The airplane on the left below has a high aspect ratio wing.
True
True or False: When you turn the control yoke with your thumbs pointed upward, your thumbs point to the aileron that is supposed to move up.
True
True or False: Wing dihedral is one of the ways that we achieve stability around the longitudinal axis.
True
True or False: With differential ailerons, the "up" ailerons "catches" more air and produces more parasite drag, in order to balance the induced drag caused by the "down" aileron.
True
Which of the following is NOT an advantage of a low wing aircraft? A - Easier to build strong landing gear support. B - Better roll maneuverability Yess lateral stability). C - Shorter take off distance. D - Better lift/drag ratio
D
Which of the following is NOT one of the three axis of an aircraft? A. Vertical B. Longitudinal C. Lateral D. Horizontal
D
Which of the following is true of a SPIN? A - A spin is considered to be a high yaw rate situation. B - Spins usually are the result of only one wing being stalled. C - Rudder deflection is usually the correction for a spin. D - All of the answers given are correct.
D
Which type of flap increases the wing surface area? a. Plain flap b. Split flap c. Slotted flap d. Fowler flap
D
Whichoftherlowing:is Nor one or tile types of drag acting on an aircraft in flight? A. Pressure drag. B. Interference drag. C. Induced drag. D. Correcendent drag.
D
True of False: A Utilify category aircraft is certified for lower G-forces than a normal category aircraft.
False
True of False: As bank angle increases, the speed at which the airplane stalls decreases.
False
True of False: Wing dihedral must be greater on high wing aircraft than on a low wing aircraft.
False
True of False:) Speed brakes and spoilers are the same thing, with the only difference being where they are mounted on the aircraft.
False
True or False A wing with a high aspect ratio produces lift over a wider range of angles of attack than does a wing with a low aspect ratio?
False
True or False. You can only increase the AOA by tipping the wing up to a higher angle
False
True or False: In order to have Static Stability, you must have positive Dynamic Stability.
False
True or False: Static stability describes how an object returns to its home state or "null".
False
True or False: Under a POSITIVE G load maneuver the pilot feels lighter in the seat.
False
True or False: "Differential ailerons" means one aileron goes up and the other aileron goes down.
False
True or False: An aspect ratio of 6 is a higher aspect ratio than 17.
False
True or False: Lift is inversely proportional to velocity.
False
True or False: The first 50% of WING FLAP deployment creates more additional DRAG than LIFT.
False
True or False: The purpose of flight spoilers is to kill lift on both wings at the same time for landing.
False
True or False: The purpose of ground spoilers is to create drag.
False
True or False: The wingtip vortex bends the relative wind to allow the winglet to produce drag.
False
True or False:) With a friese aileron the "up" aileron travels further than the "down" aileron.
False
True or False; The greater the CL. the less the camber of the airflow over the wing.
False
True or false The word "attitude" means how far the aircraft is from the ground.
False
True or False, The vertical fin is different than the vertical stabilizer.
True
True or False, Waterlines are horizontal measurements of distance, left and right.
True
True or False. The Bernoulli effect on a wing can create both lift and thrust.
True
True or False. The movement of flight controls can change the angle between the cord line and the Relative wind.
True
True or False. The relative wind always blows in the opposite direction that you are moving.
True
True or False: High wing aircraft have natural stability because the CG is below the lift.
True
True or False: Negative Static Stability says that an object continually wants to move away from null or home.
True
True or False: The smaller the radius of a turn, the greater the g-forces.
True
