basic aerodynamics Flashcards
(22 cards)
the term angle of attack is defined as the angle between the
chord line of the wing and the relative wind
what is ground effect
the results of the interference of the surface of the earth with the airflow patterns about an airplane
the angle between the chord line of an airfoil and the relative wind is known as the angle of
attack
what statement relates to bernoullis principle
air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface
the term angle of attack is defined as the angle
between the wing chord line and the relative wind
an aircraft leaving ground effect during takeoff will
experience an increase in induced drag and a decrease in performance
what must a pilot be aware of as a result of ground effect
induced drag decreases therefore any excess speed at the point of flare may cause considerable floating
floating caused by the phenomenon of ground effect will be most realized during an approach to land when at
less than the length of the wingspan above the surface
angle of attack is defined as the angle between the chord line of an airfoil and the
direction of the relative wind
the acute angle A is the angle of
attack
when are the four forces that act on an airplane in equilibrium
during unaccelerated level flight
what is the relationship of lift, drag, thrust, and weight when the airplane is in straight and level flight
loft equals weight and thrust equals drag
wingtip vortices are created only when an aircraft is
developing lift
how does the war turbulence vortex circulate around each wingtip
outward upward and around each tip
ground effect is most likely to result in which problem
becoming airborne before reaching recommended takeoff soeed
when taking off or landing at an airport where heavy aircraft are operating one should be particularly alert to the hazards of wingtip vortices because this turbulence tends to
sink into the flight path of aircraft operating below the aircraft generating the turbulence
the greatest vortex strength occurs when the generating aircraft is
heavy
clean
slow
the angle of attack at which an airplane wing stalls will
remain the same regardless of gross weight
wingtip vortices created by large aircraft tend to
sink below the aircraft generating turbulence
which statement relates to bernoullis principle
air traveling faster over the curved upper surface of an airflow causes the lower pressure on the top surface
an aircraft leaving ground effect during takeoff will
experience an increase in induced drag and decrease in performance
when taking off or landing at an airport where heavy aircraft are operating one should be particularly alert to the hazards of wingtip vortices because this turbulence tends to
sink into the flight path of an aircraft opening below the aircraft generating the turbulence
