87) The danger associated with low speed and/or high speed buffet
limits the maneuvering load factor at high altitudes.
can be reduced by increasing the load factor.
exists only above MMO.
has to be considered at take-off and landing.
76) Given a jet aircraft. Which order of increasing speeds in the performance diagram is correct?
Vs, Maximum range speed, Vx
Maximum endurance speed, Maximum range speed, Vx
Vs, Vx, Maximum range speed
Maximum endurance speed, Long range speed, Maximum range speed
77) If the climb speed schedule is changed from 280/.74 to 290/.74 the new crossover altitude is
unchanged.
only affected by the aeroplane gross mass.
lower.
higher.
78) Reduced take-off thrust should normally not be used when:
it is dark.
the runway is wet.
obstacles are present close to the end of the runway.
the runway is contaminated.
79) Which data can be extracted from the Buffet Onset Boundary Chart?
The value of the Mach number at which low speed and shockstall occur at various weights and altitudes.
The values of the Mach number at which low speed and Mach buffet occur at various masses and altitudes.
The value of maximum operating Mach number (MMO) at various masses and power settings.
The value of the critical Mach number at various masses and altitudes.
80) With zero wind, the angle of attack for maximum range for an aeroplane with turbojet engines is:
equal to that of maximum lift to drag ratio.
equal to that maximum endurance.
equal to that corresponding to zero induced drag.
lower than that of maximum lift to drag ratio.
81) The speed V2 is defined for jet aeroplane as
take-off climb speed or speed at 35 ft.
lift off speed.
take-off decision speed.
critical engine failure speed.
82) An increase in atmospheric pressure has, among other things, the following consequences on take-off performance:
a reduced take-off distance and degraded initial climb performance
a reduced take-off distance and improved initial climb performance
an increases take-off distance and degraded initial climb performance
an increased take-off distance and improved initial climb performance
83) The induced drag of an aeroplane at constant gross weight and altitude is highest at
VSO (stalling speed in landing configuration)
VS1 (stalling speed in clean configuration)
VMO (maximum operating limit speed)
VA (design manoeuvring speed)
84) On a twin engined piston aircraft with variable pitch propellers, for a given mass and altitude, the minimum drag speed is 125 kt and the holding speed (minimum fuel burn per hour) is 95 kt.
The best rate of climb speed will be obtained for a speed:
inferior to 95 kts
is between 95 and 125 kt
equal to 125 kt
equal to 95 kt
98) Which one of the following is not affected by a tail wind?
the field limited take-off mass.
the obstacle limited take-off mass.
the take-off run.
the climb limited take-off mass.
86) In a steady descending flight (descent angle GAMMA) equilibrium of forces acting on the aeroplane is given by: (T = Thrust, D = Drag, W = Weight)
T + D = - W sin GAMMA
T + W sin GAMMA = D
T - W sin GAMMA = D
T - D = W sin GAMMA
88) The pilot of a light twin engine aircraft has calculated a 4 000 m service ceiling, based on the forecast general conditions for the flight and a take-off mass of 3 250 kg.
If the take-off mass is 3 000 kg, the service ceiling will be:
less than 4 000 m.
unchanged, equal to 4 000 m.
only a new performance analysis will determine if the service ceiling is higher or lower than 4 000 m.
higher than 4 000 m.
89) Consider the graphic representation of the power required versus true air speed (TAS), for a jet aeroplane with a given mass. When drawing the tangent out of the origin, the point of contact determines the speed of:
critical angle of attack.
maximum endurance.
minimum power.
maximum specific range.
90) Which of the following statements is correct ?
If a clearway or a stopway is used, the liftoff point must be attainable at least at the end of the permanent runway surface.
A stopway means an area beyond the take-off runway, able to support the aeroplane during an aborted take-off.
An underrun is an area beyond the runway end which can be used for an aborted take-off.
A clearway is an area beyond the runway which can be used for an aborted take-off.
91) What effect has a downhill slope on the take-off speeds? The slope
has no effect on the take-off speed V1.
decreases the take-off speed V1.
decreases the TAS for take-off.
increases the IAS for take-off.
92) The load factor in a turn in level flight with constant TAS depends on
the radius of the turn and the bank angle.
the true airspeed and the bank angle.
the radius of the turn and the weight of the aeroplane.
the bank angle only.
93) Which of the following factors determines the maximum flight altitude in the "Buffet Onset Boundary" graph?
Aerodynamics.
Theoretical ceiling.
Service ceiling.
Economy.
95) What is the most important aspect of the 'backside of the power curve'?
The elevator must be pulled to lower the nose.
The speed is unstable.
The aeroplane will not stall.
The altitude cannot be maintained.
121) How does the lift coefficient for maximum range vary with altitude? (No compressibility effects.)
The lift coefficient decreases with increasing altitude.
The lift coefficient increases with increasing altitude.
Only at low speeds the lift coefficient decreases with increasing altitude.
The lift coefficient is independant of altitude.
85) How does TAS vary in a constant Mach climb in the troposphere?
TAS increases.
TAS is constant.
TAS is not related to Mach Number.
TAS decreases.
155) The landing reference speed VREF has, in accordance with international requirements, the following margins above stall speed in landing configuration:
15%
20%
10%
30%
