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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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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