ATPL UPDATED ACTUAL Exam
Questions and CORRECT ANSWERS
What are the forces acting on an aircraft in flight? - CORRECT ANSWER- ✔✔Drag. Thrust.
Lift and Weight
What is direct lift control? - CORRECT ANSWER- ✔✔The elevator / stabilizer provide the
direct lift control.
What are high lift devices? - CORRECT ANSWER- ✔✔Trailing edge flaps. Leading edge
flaps. Slots
Define the two major types or Drag. - CORRECT ANSWER- ✔✔Profile and induced drag
which equals total drag
What are high drag devices? - CORRECT ANSWER- ✔✔Trailing edge flaps, spoilers,
landing gear, revere thrust, braking parachute.
How do you prevent span-vise airflow on a wing especially swept wing? - CORRECT
ANSWER- ✔✔Fences, vortex generators
What is the purpose vortex generators and fences? - CORRECT ANSWER- ✔✔To reduce
spanwise airflow and thereby reduce its effects
What are winglets and how do they work? - CORRECT ANSWER- ✔✔Winglets are
aerodynamically efficient surfaces located at the wing tips. They are designed to reduce
induced drag. They dispense the spanwise airflow from the upper and lower surfaces at
different points.
How does a forward center of gravity affect the stall speed? - CORRECT ANSWER- ✔✔A
center of gravity forward of the center of pressure will cause a higher stall speed
What advantages does an aircraft gain from a swept swing? - CORRECT ANSWER-
✔✔High mach cruise speeds, stability in turbulence.
,Where does a swept wing stall first? - CORRECT ANSWER- ✔✔A simple swept or tapered
wing will stall at the wing tip first.
Explain speed stability. - CORRECT ANSWER- ✔✔It's the behavior of the speed after a
disturbance at a fixed power setting
What is Mach Number - CORRECT ANSWER- ✔✔Mach number is a true airspeed
indication, given as a percentage relative to the local speed of sound.
What is the critical Mach number (mcrit)? - CORRECT ANSWER- ✔✔Mcrit is the aircraft's
mach speed at which the airflow over a wing becomes sonic.
What is Mach tuck? - CORRECT ANSWER- ✔✔Is the nose down pitching moment an
aircraft experiences as it passes it's critical mach number
What is the purpose of a mach trimmer? - CORRECT ANSWER- ✔✔A Mach trimmer is to
automatically compensate for Mach tuck above Mcrit.
What are the affects of compressibility? - CORRECT ANSWER- ✔✔The effect of air being
compressed onto a surface resulting in an increase in density and thus dynamic pressure rises
above its expected value.
What changes the aircrafts angle of attack at the stall? - CORRECT ANSWER- ✔✔The
movement of the center of pressure point at the stall causes a change in the aircraft's angle of
attack
What happens to the stall speed at very high altitudes? - CORRECT ANSWER- ✔✔Mach
number compressibility effect on the wing results in a higher EAS (actual equivalent
airspeed), compressibility error on the IAS increases the stall speed
What is super stall? - CORRECT ANSWER- ✔✔Is a stall from which the aircraft is unable to
recover.
, What is Dutch roll? - CORRECT ANSWER- ✔✔Dutch roll is an oscillatory Instability. It is
the combination of yawing and rolling motions
What causes Dutch roll? - CORRECT ANSWER- ✔✔Swept wings
What is the three purposes of spoilers? - CORRECT ANSWER- ✔✔Roll control, Air speed
brakes, and ground lift dumpers
What our Krueger flaps? - CORRECT ANSWER- ✔✔Krueger flaps are leading edge wing
flaps used to increase the wing chamber
How do flap affect takeoff ground run? - CORRECT ANSWER- ✔✔A higher flap within the
take off range, will reduce the takeoff' ground run for a given aircraft weight.
What's the purpose is of yaw and roll dampers? - CORRECT ANSWER- ✔✔To prevent
Dutch roll and coordinate turns
What are the four reasons for a variable-incident tailplane / stabilizer? - CORRECT
ANSWER- ✔✔Provide a balancing force for a large C of G range, cope with large trim
changes. Provide balancing force for a large speed range, reduce elevator trim drag.
What is a mass balance? - CORRECT ANSWER- ✔✔It is another form of aerodynamic
balance control on a control surface.
What are active controls? - CORRECT ANSWER- ✔✔A surface that moves automatically /
actively in response to non-direct inputs
What is engine torque? - CORRECT ANSWER- ✔✔A force causing rotation
What is specific fuel consumption (SFC)? - CORRECT ANSWER- ✔✔The quantity / weight
(Ib) of fuel consumed per hour divided by the thrust of an engine in pounds
Questions and CORRECT ANSWERS
What are the forces acting on an aircraft in flight? - CORRECT ANSWER- ✔✔Drag. Thrust.
Lift and Weight
What is direct lift control? - CORRECT ANSWER- ✔✔The elevator / stabilizer provide the
direct lift control.
What are high lift devices? - CORRECT ANSWER- ✔✔Trailing edge flaps. Leading edge
flaps. Slots
Define the two major types or Drag. - CORRECT ANSWER- ✔✔Profile and induced drag
which equals total drag
What are high drag devices? - CORRECT ANSWER- ✔✔Trailing edge flaps, spoilers,
landing gear, revere thrust, braking parachute.
How do you prevent span-vise airflow on a wing especially swept wing? - CORRECT
ANSWER- ✔✔Fences, vortex generators
What is the purpose vortex generators and fences? - CORRECT ANSWER- ✔✔To reduce
spanwise airflow and thereby reduce its effects
What are winglets and how do they work? - CORRECT ANSWER- ✔✔Winglets are
aerodynamically efficient surfaces located at the wing tips. They are designed to reduce
induced drag. They dispense the spanwise airflow from the upper and lower surfaces at
different points.
How does a forward center of gravity affect the stall speed? - CORRECT ANSWER- ✔✔A
center of gravity forward of the center of pressure will cause a higher stall speed
What advantages does an aircraft gain from a swept swing? - CORRECT ANSWER-
✔✔High mach cruise speeds, stability in turbulence.
,Where does a swept wing stall first? - CORRECT ANSWER- ✔✔A simple swept or tapered
wing will stall at the wing tip first.
Explain speed stability. - CORRECT ANSWER- ✔✔It's the behavior of the speed after a
disturbance at a fixed power setting
What is Mach Number - CORRECT ANSWER- ✔✔Mach number is a true airspeed
indication, given as a percentage relative to the local speed of sound.
What is the critical Mach number (mcrit)? - CORRECT ANSWER- ✔✔Mcrit is the aircraft's
mach speed at which the airflow over a wing becomes sonic.
What is Mach tuck? - CORRECT ANSWER- ✔✔Is the nose down pitching moment an
aircraft experiences as it passes it's critical mach number
What is the purpose of a mach trimmer? - CORRECT ANSWER- ✔✔A Mach trimmer is to
automatically compensate for Mach tuck above Mcrit.
What are the affects of compressibility? - CORRECT ANSWER- ✔✔The effect of air being
compressed onto a surface resulting in an increase in density and thus dynamic pressure rises
above its expected value.
What changes the aircrafts angle of attack at the stall? - CORRECT ANSWER- ✔✔The
movement of the center of pressure point at the stall causes a change in the aircraft's angle of
attack
What happens to the stall speed at very high altitudes? - CORRECT ANSWER- ✔✔Mach
number compressibility effect on the wing results in a higher EAS (actual equivalent
airspeed), compressibility error on the IAS increases the stall speed
What is super stall? - CORRECT ANSWER- ✔✔Is a stall from which the aircraft is unable to
recover.
, What is Dutch roll? - CORRECT ANSWER- ✔✔Dutch roll is an oscillatory Instability. It is
the combination of yawing and rolling motions
What causes Dutch roll? - CORRECT ANSWER- ✔✔Swept wings
What is the three purposes of spoilers? - CORRECT ANSWER- ✔✔Roll control, Air speed
brakes, and ground lift dumpers
What our Krueger flaps? - CORRECT ANSWER- ✔✔Krueger flaps are leading edge wing
flaps used to increase the wing chamber
How do flap affect takeoff ground run? - CORRECT ANSWER- ✔✔A higher flap within the
take off range, will reduce the takeoff' ground run for a given aircraft weight.
What's the purpose is of yaw and roll dampers? - CORRECT ANSWER- ✔✔To prevent
Dutch roll and coordinate turns
What are the four reasons for a variable-incident tailplane / stabilizer? - CORRECT
ANSWER- ✔✔Provide a balancing force for a large C of G range, cope with large trim
changes. Provide balancing force for a large speed range, reduce elevator trim drag.
What is a mass balance? - CORRECT ANSWER- ✔✔It is another form of aerodynamic
balance control on a control surface.
What are active controls? - CORRECT ANSWER- ✔✔A surface that moves automatically /
actively in response to non-direct inputs
What is engine torque? - CORRECT ANSWER- ✔✔A force causing rotation
What is specific fuel consumption (SFC)? - CORRECT ANSWER- ✔✔The quantity / weight
(Ib) of fuel consumed per hour divided by the thrust of an engine in pounds
