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Components of a fixed wing aircraft structure correct answers 1. fuselage 2. wings 3. tail assembly/empennage 4. power plant 5. landing gear 6. flight instruments/controls and control surfaces Fuselage components correct answers cockpit, where pilots/crew control operations cabin, if pas...

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Uploaded on September 5, 2024
Number of pages 28
Written in 2024/2025
Type Exam (elaborations)
Contains Questions & answers

components of a fixed wing aircraft structure

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ASTB || A+ Graded Already.
Components of a fixed wing aircraft structure correct answers 1. fuselage
2. wings
3. tail assembly/empennage
4. power plant
5. landing gear
6. flight instruments/controls and control surfaces

Fuselage components correct answers cockpit, where pilots/crew control operations

cabin, if passengers,

cargo area, if any

attachment point for other components (wings, tail, landing gear)

Firewall correct answers fireproof partition between the engine compartment and the
cockpit/cabin to protect the crew and passengers from engine fire

Two types of fuselage correct answers truss- steel/aluminum tubing in series of triangular shapes
for rigidity

monocoque- bulkheads, stringers (length of fuselage) and formers
(perpendicular to stringers) to support stressed/stretched skin

Wings correct answers airfoils attached to each side of fuselage

main lifting surfaces supporting plane in flight

Airfoil correct answers part or surface that controls lift, direction, stability, thrust or propulsion

ex. wing, propeller blade, rudder (any application where air needs to be moved)

Wing positions correct answers high wing

mid wing

low wing

1 set=monoplane, most planes

2 sets= biplane (most vertically stacked)

Cantilever wings correct answers requires no external bracing, supported by internal wing spars,
ribs,

,stringers and construction of skin/covering

Semi-cantilever wings correct answers requires both internal bracing and external support from
struts

attached to fuselage

Ailerons correct answers control surface attached to outboard trailing edges of wings, move in
opposite direction from each other.

extend from middle of win out toward wingtip

control the airplane's movement around the longitudinal axis, also known as roll.

moving joystick or control wheel to the right causes the right aileron to deflect upward while the
left aileron deflects downward. combination causes plane to roll right

upward deflection causes a decrease in lift that makes right wing drop,

downward deflection causes increased lift and the wing to rise

lateral stability

Flaps correct answers control surface attached to trailing edges of wings, increase both lift and
drag for any given angle of attack

extend outward from wing root to middle of trailing edges

flush with rest of wing surface surface during flight, when extended, move down together to
increase lift of wing for takeoff and landing

allow a compromise between high cruising speed and low landing speed because they may be
extended when needed and then retracted into the wing structure when not needed.

most common high-lift devices

How does an airfoil generate lift? correct answers shape provides lift when it splits the airstream
through which it's moving.
thicker rounded leading edge (more camber) and thinner training edge (less camber) causes air to
flow faster over the top of the wing than the bottom meaning that there is less air pressure above
the wing than underneath.
pressure difference causes lift according to Bernoulli principle

Camber correct answers minimum distance between chord line and mean camber line of airfoil

, measure of the curvature of the airfoil (high camber=high curvature)

low-medium speed airfoils have more thickness/camber than high speed

Chord correct answers distance from leading edge to trailing edge of wing

Chord line correct answers line from the middle of leading edge to trailing edge of the airfoil

every point on line is the same for rectangular (symmetrical) airfoils, otherwise chord length
varies along length of wing

Mean camber line correct answers (curved) plot of points that lie halfway between upper and
lower surfaces of the airfoil

same as chord line for symmetric airfoil (rectangular) where upper and lower surface have same
shape, usually two separate lines because most airfoils are more curved on the top than bottom

Thickness correct answers maximum distance between the upper and lower surfaces of the airfoil

Wingtips correct answers ends of the wing

Wingspan correct answers distance between two wingtips

Planform correct answers view of an airfoil from above

Dihedral angle correct answers horizontal wings are not truly horizontal but meet an an angle

built into wing design for roll stability

wingtips higher off the ground than wing roots

Anhedral angle correct answers wingtips lower than wing roots

used for highly maneuverable fighter planes

give aircraft a higher roll rate

Wing shape correct answers speed, maneuverability, handling qualities all very dependent on
shape of the wings

3 Types:
straight
swept
delta

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