Fixed-wing aircraft structure correct answers 1. Fuselage
2. Wings
3. Tail assembly or empennage
4. Landing gear
5. Powerplant
6. Flight instruments/controls and control surfaces
fuselage correct answers body of an airplane. Contains the cockpit, the cabin, the cargo
area if there is one, and attachment points for other major airplane components, such
as wings, tail section, and landing gear.
cockpit correct answers from which the pilots and the flight crew control the aircraft's
operations
Two design types of fuselage construction correct answers 1. truss
2. monocoque
Truss construction fuselages correct answers use steel or aluminum tubing in a series
of triangular shapes (called trusses) to get the necessary strength and rigidity
monocoque designs correct answers use bulkheads, stringers, (running the length of
the fuselage) and formers (perpendicular to stringers) of various sizes and shapes to
support a stretched or "stressed" skin
wings correct answers airfoils attached to each side of the fuselage that serve as the
main lifting surfaces supporting the airplane in flight.
airfoil correct answers an aircraft part or surface (such as wing, propeller blade, or
rudder) that controls lift, direction, stability, thrust, or propulsion for the aircraft.
monoplanes correct answers airplanes with one set of wings
biplanes correct answers airplanes with two sets of wings
cantilever wing correct answers requires no external bracing, getting its support from
internal wing spars, ribs, and stringers, as well as the construction of the wing's skin or
covering
semi-cantilever wing correct answers requires both internal bracing and external
support from struts attached to the fuselage
ailerons correct answers extend from about the middle of the wing out toward the
wingtip; they move in opposite directions to create aerodynamic forces that cause the
airplane to roll
, flaps correct answers extend outward from near where the wing joins the fuselage
(called the wing root) to about the middle of the wing's trailing edge. The flaps are
usually flush with the rest of the wing surface when cruising flight; when they are
extended, the flaps move downward together to increase the lift of the wing for takeoffs
and landings. Most common high lift devices.
chord line correct answers the distance from the leading edge of the wing to the trailing
edge. Cuts the airfoil into an upper surface and a lower surface
mean camber line correct answers if we plot the points that lie halfway between the
upper and lower surfaces, we obtain a curve called the mean camber line.
camber correct answers the maximum difference between the the mean camber line
and the chord line. A measure of the curvature of the airfoil.
thickness correct answers the maximum difference between the upper and lower
surfaces
wingtips correct answers the ends of the wings
wingspan correct answers the distance from one wingtip to the other
a planform correct answers the shape of the wing viewed from above
dihedral angle correct answers when the left and right wings aren't truly horizontal to the
fuselage, but instead meet at this angle. Built into the design for roll stability; a wing with
some dihedral will naturally return to its original position if it encounters a slight
displacement
Three basic wing types on modern airplanes correct answers 1. straight
2. Sweep
3. Delta
Straight wings correct answers mostly found on small, low-speed airplanes, as well as
gliders and sailplanes. These wings give the most efficient lift at low speeds, but are not
very good for high speed flight, especially that approaching the speed of sound
swept wings correct answers (either forward swept or swept back) is the most common
design for modern high speed airplanes. Creates less drag than straight wing designs,
but is somewhat more unstable at low speeds.
moderate sweep correct answers commercial jetliner, resulting in less drag while
maintaining stability at lower speeds