ATPL EXAM 2024 WITH QUESTIONS AND ANSWERS.
What are the forces acting on an aircraft in flight? - ANSWER Drag. Thrust.
Lift and Weight
What is direct
... [Show More] lift control? - ANSWER The elevator / stabilizer provide the
direct lift control.
What are high lift devices? - ANSWER Trailing edge flaps. Leading edge flaps.
Slots
Define the two major types or Drag. - ANSWER Profile and induced drag
which equals total drag
What are high drag devices? - ANSWER Trailing edge flaps, spoilers, landing
gear, revere thrust, braking parachute.
How do you prevent span-vise airflow on a wing especially swept wing? -
ANSWER Fences, vortex generators
What is the purpose vortex generators and fences? - ANSWER To reduce
spanwise airflow and thereby reduce its effects
What are winglets and how do they work? - 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? - 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? - ANSWER High
mach cruise speeds, stability in turbulence.
Where does a swept wing stall first? - ANSWER A simple swept or tapered
wing will stall at the wing tip first.
Explain speed stability. - ANSWER It's the behavior of the speed after a
disturbance at a fixed power setting
What is Mach Number - ANSWER Mach number is a true airspeed
indication, given as a percentage relative to the local speed of sound.
ATPL EXAM 2024 WITH QUESTIONS
AND ANSWERS
What is the critical Mach number (mcrit)? - ANSWER Mcrit is the aircraft's
mach speed at which the airflow over a wing becomes sonic.
What is Mach tuck? - 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? - ANSWER A Mach trimmer is to
automatically compensate for Mach tuck above Mcrit.
What are the affects of compressibility? - 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? - 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? - 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? - ANSWER Is a stall from which the aircraft is unable to
recover.
What is Dutch roll? - ANSWER Dutch roll is an oscillatory Instability. It is
the combination of yawing and rolling motions
What causes Dutch roll? - ANSWER Swept wings
What is the three purposes of spoilers? - ANSWER Roll control, Air speed
brakes, and ground lift dumpers
What our Krueger flaps? - ANSWER Krueger flaps are leading edge wing
flaps used to increase the wing chamber
How do flap affect takeoff ground run? - 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? - ANSWER To prevent Dutch
roll and coordinate turns
What are the four reasons for a variable-incident tailplane / stabilizer? -
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? - ANSWER It is another form of aerodynamic
balance control on a control surface.
What are active controls? - ANSWER A surface that moves automatically /
actively in response to non-direct inputs
What is engine torque? - ANSWER A force causing rotation
What is specific fuel consumption (SFC)? - ANSWER The quantity / weight
(Ib) of fuel consumed per hour divided by the thrust of an engine in pounds
Why do operators use reduced de-rated thrust takeoffs in a jet aircraft? -
ANSWER To protect engine life and improve reliability, reduce noise.
What is the purpose of engine re-light boundaries? - ANSWER To ensure that
correct proportion of air is delivered to the engines combustion chamber to
restart the engine in flight.
Why are bleed valves fitted to gas turbine engines? - ANSWER To provide
bleed air for auxiliary systems, to regulate the correct airflow pressures between
different engine sections
What fuels are commonly used on jet aircraft? - ANSWER Jet A1 - waxing
point of - 50 C, Jet A - waxing point of -40C.
Is there a critical engine on a jet aircraft? - ANSWER No
How does INS/IRS find true north? - ANSWER It is aligned to true north by
its gyroscopes.
What are the advantages of an INS? - ANSWER Very accurate, self-contained
system, totally global system enabling aircraft to fly great circle tracks
What are the disadvantages of INS? - ANSWER Bounded errors, unbounded
errors, Inherent system errors.
What does ISA stand for? - ANSWER International standard atmosphere.
What is pressure altitude? - ANSWER Pressure altitude or pressure height is
the international standard atmosphere (ISA) height above the 29.92 / 1013 pressure
datum, at which the pressure value experienced represents that of the level under
consideration. [Show Less]