Ch 1 Basic Aerodynamics

The term angle of attack is defined as the angle
between the wing chord line & the relative wind

The angle between the chord line of an airfoil & the relative wind is known as the angle of
attack

Angle of attack is defined as the angle between the chord line of an airfoil & the
direction of the relative wind

The angle of attack at which an airfoil stalls will
remain the same regardless of gross weight

What is the effect of advancing the throttle in flight?
airspeed will remain relatively constant but the aircraft will climb

Which statement relates to Bernoulli’s principle?
Air traveling faster over the curved upper surface of an airfoil causes lower pressure on the top surface

The four forces acting on an airplane in flight are
lift, weight, thrust, & drag

What is the purpose of the rudder on an airplane?
to control yaw

what is the relationship of lift, drag, thrust, and weight when the airplane is in straight and level flight?
lift equals weight & thrust equals drag

when are the 4 forces that act on an airplane in equilibrium?
during unaccelerated flight

the best speed to use for a glide is one that will result in the greatest glide distance for a given amount of
altitude

climb performance depends upon the
reserve power or thrust

an airplane said to be inherently stable will
require less effort to control

what determines the longitudinal stability of an airplane?
the location of the CG w/ respect to the center of lift

what causes an airplane (except a t-tail) to pitch nose down when power is reduced & controls are not adjusted?
the downwash on the elevators from the propeller slipstream is reduced & elevator effectiveness is reduced

an airplane has been loaded in such a manner that the CG is located aft of the aft CG limit. one undesirable flight characteristic a pilot might experience w/ this airplane would be
difficulty in recovering from a stalled condition

loading an airplane to the most aft CG will cause the airplane to be
less stable at all speeds

changes in the center of pressure of a wing affect the aircraft’s
aerodynamic balance & controllability

if an airplane weighs 2300 pounds, what approximate weight would the airplane structure be required to support during a 60 degree banked turn while maintaining altitude?
4600 pounds

if an airplane weighs 3300 pounds, what approximate weight would the airplane structure be required to support during a 30 degree banked turn while maintaining altitude?
3960 pounds

if an airplane weighs 4500 pounds, what approximate weight would the airplane structure be required to support during a 45 degree banked turn while maintaining altitude?
6750 pounds

the amount of excess load that can be imposed on the wing of an airplane depends upon the
speed of the airplane

which basic flight maneuver increases the load factor on an airplane as compared to straight and level flight?
turns

what force makes an airplane turn?
the horizontal component of lift

during an approach to a stall, an increased load factor will cause the airplane to
stall at a higher airspeed

select the four flight fundamentals involved in maneuvering an aircraft
straight & level flight, turns, climbs, & descents

if an emergency situation requires a downwind landing, pilots should expect a faster
ground speed at touchdown, a longer ground roll, & the likelihood of overshooting the desired touchdown point

when executing an emergency approach to land in a single-engine airplane, it is important to maintain a constant glide speed because variations in glide speed
nullify all attempts at accuracy in judgment of gliding distance & landing spot

as altitude increases, the indicated airspeed at which a given airplane stalls in a particular configuration will
remain the same regardless of altitude

the direct cause of every stall is excessive
angle of attack

in what flight condition must an aircraft be placed in order to spin?
stalled

during a spin to the left, which wing(s) is/are stalled?
both wings are stalled

one of the main functions of flaps during approach & landing is to
increase the angle of descent without increasing the airspeed

the angle of attack at which an airplane wing stalls will
remain the same regardless of gross weight

what is one purpose of wing flaps?
to enable the pilot to make steeper approaches to a landing without increasing the airspeed

ground effect is most likely to result in which problem?
becoming airborne before reaching recommended takeoff speed

what is ground effect?
the result of the interference of the surface of the earth with the airflow patterns about an airplane

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 wing span above the surface

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

which is a result of the phenomenon of ground effect?
the angle of attack generating lift is increased

the airspeed range to avoid while flying in ground effect is
40 mph & above

an aircraft leaving ground effect during takeoff will
experience an increase in induced drag & a decrease in performance

when landing behind a large aircraft which procedure should be followed for vortex avoidance?
stay above its final approach flight path all the way to touchdown

how does the wake turbulence vortex circulate around each wing tip?
outward, upward, & around each tip

when taking off or landing at an airport where heavy aircraft are operating, one should be particularly alert to the hazards of wing tip vortices because this turbulence tends to
sink into the flight path of aircraft operating below the aircraft generating the turbulence

wing tip vortices are created only when an aircraft is
developing lift

the greatest vortex strength occurs when the generating aircraft is
heavy, clean, and slow

wing tip vortices created by large aircraft tend to
sink below the aircraft generating turbulence

the wind condition that requires max caution when avoiding wake turbulence on landing is a
light quartering tailwind

when landing behind a large aircraft the pilot should avoid wake turbulence by staying
above the large aircraft’s final approach path and landing beyond the large aircraft’s touchdown point

when departing behind a large aircraft the pilot should avoid wake turbulence by maneuvering the aircraft
above & upwind from the heavy aircraft

what wind condition prolongs the hazards of wake turbulence on a landing runway for the longest period of time?
light, quartering tailwind

a go around from a poor landing approach
is preferable to last minute attempts to prevent a bad landing

If an airplane weighs 4,500 pounds, what approximate weight would the airplane structure be required to support during a 45 6,750 pounds How does the wake turbulence vortex circulate around each wingtip? Outward, upward, and around each tip WE WILL …

Emergency Priorities 1. Aircraft control 2. Assess and resolve 3. Get help 4. Back up with checklist 5. Secure Total Engine Failure in flight Set Best Glide Speed 65 Trim Left Pedal Head in direction of field (downwind) Carb Heat …

The final authority as to the operation of an aircraft is the… Pilot in command. Who is responsible for determining if an aircraft is in condition for safe flight? The pilot in command. WE WILL WRITE A CUSTOM ESSAY SAMPLE …

NORMAL BRIEFING When dispatching the aircraft at first daily flight, we meet all crew to perform a briefing. When checking the validity of crew licenses and medical certification. Captain responsibility will be to conduct a briefing with all relevant operating …

What is true concerning operation in a restricted area? Permission must be obtained from the controlling agency before operating in a non-active restricted area. Under what conditions can an aircraft be operated after an Airworthiness Directive has been issued for …

A steady green light signal direction from the control tower to an aircraft in flight is a signal that the pilot Answer: is cleared to land Which light signal from the control tower clears a pilot to taxi? Answer: Flashing …

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