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2. Performance

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Tema 1 Performances Quiz on 2. Performance, created by Jose Antonio Vazquez on 01/11/2018.
Jose Antonio Vazquez
Quiz by Jose Antonio Vazquez, updated more than 1 year ago
Jose Antonio Vazquez
Created by Jose Antonio Vazquez about 6 years ago
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Resource summary

Question 1

Question
87) The danger associated with low speed and/or high speed buffet
Answer
  • 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.

Question 2

Question
76) Given a jet aircraft. Which order of increasing speeds in the performance diagram is correct?
Answer
  • 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

Question 3

Question
77) If the climb speed schedule is changed from 280/.74 to 290/.74 the new crossover altitude is
Answer
  • unchanged.
  • only affected by the aeroplane gross mass.
  • lower.
  • higher.

Question 4

Question
78) Reduced take-off thrust should normally not be used when:
Answer
  • it is dark.
  • the runway is wet.
  • obstacles are present close to the end of the runway.
  • the runway is contaminated.

Question 5

Question
79) Which data can be extracted from the Buffet Onset Boundary Chart?
Answer
  • 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.

Question 6

Question
80) With zero wind, the angle of attack for maximum range for an aeroplane with turbojet engines is:
Answer
  • 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.

Question 7

Question
81) The speed V2 is defined for jet aeroplane as
Answer
  • take-off climb speed or speed at 35 ft.
  • lift off speed.
  • take-off decision speed.
  • critical engine failure speed.

Question 8

Question
82) An increase in atmospheric pressure has, among other things, the following consequences on take-off performance:
Answer
  • 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

Question 9

Question
83) The induced drag of an aeroplane at constant gross weight and altitude is highest at
Answer
  • VSO (stalling speed in landing configuration)
  • VS1 (stalling speed in clean configuration)
  • VMO (maximum operating limit speed)
  • VA (design manoeuvring speed)

Question 10

Question
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:
Answer
  • inferior to 95 kts
  • is between 95 and 125 kt
  • equal to 125 kt
  • equal to 95 kt

Question 11

Question
98) Which one of the following is not affected by a tail wind?
Answer
  • the field limited take-off mass.
  • the obstacle limited take-off mass.
  • the take-off run.
  • the climb limited take-off mass.

Question 12

Question
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)
Answer
  • T + D = - W sin GAMMA
  • T + W sin GAMMA = D
  • T - W sin GAMMA = D
  • T - D = W sin GAMMA

Question 13

Question
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:
Answer
  • 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.

Question 14

Question
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:
Answer
  • critical angle of attack.
  • maximum endurance.
  • minimum power.
  • maximum specific range.

Question 15

Question
90) Which of the following statements is correct ?
Answer
  • 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.

Question 16

Question
91) What effect has a downhill slope on the take-off speeds? The slope
Answer
  • 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.

Question 17

Question
92) The load factor in a turn in level flight with constant TAS depends on
Answer
  • 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.

Question 18

Question
93) Which of the following factors determines the maximum flight altitude in the "Buffet Onset Boundary" graph?
Answer
  • Aerodynamics.
  • Theoretical ceiling.
  • Service ceiling.
  • Economy.

Question 19

Question
95) What is the most important aspect of the 'backside of the power curve'?
Answer
  • The elevator must be pulled to lower the nose.
  • The speed is unstable.
  • The aeroplane will not stall.
  • The altitude cannot be maintained.

Question 20

Question
121) How does the lift coefficient for maximum range vary with altitude? (No compressibility effects.)
Answer
  • 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.

Question 21

Question
85) How does TAS vary in a constant Mach climb in the troposphere?
Answer
  • TAS increases.
  • TAS is constant.
  • TAS is not related to Mach Number.
  • TAS decreases.

Question 22

Question
155) The landing reference speed VREF has, in accordance with international requirements, the following margins above stall speed in landing configuration:
Answer
  • 15%
  • 20%
  • 10%
  • 30%
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