V Speeds - Help
Hello everybody.
If anybody could try and help me with the answers for some "advanced" questions I have come across over the years it would be greatly appreciated
1. Given that:
VEF= Critical engine failure speed
VMCG= Ground minimum control speed
VMCA= Air minimum control speed
VMU= Minimum unstick speed
V1= Take-off decision speed
VR= Rotation speed
V2 min.= Minimum take-off safety speed
The correct formula is:
a) VMCG<=VEF < V1
b) 1.05 VMCA<= VEF<= V1
c) 1.05 VMCG< VEF<= VR
d) V2min<= VEF<= VMU
2. The induced drag of an aeroplane at constant gross weight and altitude is highest at
a) VSO (stalling speed in landing configuration)
b) VS1 (stalling speed in clean configuration)
c) VMO (maximum operating limit speed)
d) VA (design manoeuvring speed)
3. The stalling speed or the minimum steady flight speed at which the aeroplane is controllable in landing configuration is abbreviated as
a) VSO.
b) VS1.
c) VS.
d) VMC.
4. Which of the following speeds can be limited by the ’maximum tyre speed’?
a) Lift-off groundspeed.
b) Lift-off IAS.
c) Lift-off TAS.
d) Lift-off EAS.
5. During the flight preparation a pilot makes a mistake by selecting a V1 greater than that required. Which problem will occur when the engine fails at a speed immediately above the correct value of V1?
a) The stop distance required will exceed the stop distance available.
b) The one engine out take-off distance required may exceed the take-off distance available.
c) V2 may be too high so that climb performance decreases.
d) It may lead to over-rotation.
6. V1 has to be
a) equal to or higher than VMCG.
b) equal to or higher than VMCA.
c) higher than than VR.
d) equal to or higher than V2.
7. The take-off safety speed V2min for turbo-propeller powered aeroplanes with more than three engines may not be less than:
8. The speed V2 of a jet aeroplane must be greater than:
a) 1.2Vs.
b) 1.2VMCG.
c) 1.05VLOF.
d) 1.3V1.
9. As long as an aeroplane is in a positive climb
a) VX is always below VY.
b) VX is sometimes below and sometimes above VY depending on altitude.
c) VX is always above VY.
d) VY is always above VMO.
10. Higher gross mass at the same altitude decreases the gradient and the rate of climb whereas
a) VY and VX are increased.
b) VX is increased and VY is decreased.
c) VY and VX are not affected by a higher gross mass.
d) VY and VX are decreased.
11. Given a jet aircraft. Which order of increasing speeds in the performance diagram is correct?
a) Vs, Vx, Maximum range speed
b) Maximum endurance speed, Long range speed, Maximum range speed
c) Vs, Maximum range speed, Vx
d) Maximum endurance speed, Maximum range speed, Vx
12. Approaching in turbulent wind conditions requires a change in the landing reference speed (VREF):
a) Increasing VREF
b) Lowering VREF
c) Keeping same VREF because wind has no influence on IAS.
d) Increasing VREF and making a steeper glide path to avoid the use of spoilers.
13. What margin above the stall speed is provided by the landing reference speed VREF?
a) 1,30 VSO
b) 1,05 VSO
c) 1,10 VSO
d) VMCA x 1,2
14. Which of the following answers is true?
a) V1 is lower or equal to VR
b) V1 is higher VLOF
c) V1 is higher VR
d) V1 is lower VMCG
15. Which statement is correct?
a) VR must not be less than 1.05 VMCA and not less than V1.
b) VR must not be less than VMCA and not less than 1.05 V1.
c) VR must not be less than 1.1 VMCA and not less than V1.
d) VR must not be less than 1.05 VMCA and not less than 1.1 V1
16. Which of the following represents the minimum for V1?
a) VMCG
b) VLOF
c) VMU
d) VR
17. Which of the following represents the maximum value for V1 assuming max tyre speed and max brake energy speed are not limiting?
a) VR
b) VMCA
c) V2
d) VREF
18. The correct formula is: (Remark: "<=" means "equal to or lower")
a) VMCG<=VEF < V1
b) 1.05 VMC<= VEF<= V1
c) 1.05 VMCG< VEF<= VR
d) V2min<= VEF<= VMU
19. Regarding take-off, the take-off decision speed V1:
a) is the airspeed on the ground at which the pilot is assumed to have made a decision to continue or discontinue the take-off.
b) is always equal to VEF (Engine Failure speed).
c) is an airspeed at which the aeroplane is airborne but below 35 ft and the pilot is assumed to have made a decision to continue or discontinue the take-off .
d) is the airspeed of the aeroplane upon reaching 35 feet above the take-off surface.
20. Which of the following sequences of speed for a jet aeroplane is correct? (from low to high speeds)
a) Vs, maximum angle climb speed, maximum range speed.
b) Vs, maximum range speed, maximum angle climb speed
c) Maximum endurance speed, maximum range speed, maximum angle of climb speed.
d) Maximum endurance speed, long range speed, maximum range speed.
21. In accordance to CS 25 which of the following listed speeds are used for determination of V2min:
a) VSR, VMCA
b) VMCG, V2
c) VLOF, VMCA
d) V1, VR.
22. In certain conditions V2 can be limited by VCMA
a) Low take-off mass, large flap extension, low field elevation.
b) Low take-off mass, small flap extension, low field elevation.
c) High take-off mass, large flap extension, low field elevation.
d) High take-off mass, small flap extension, high field elevation.
23. The relationship of the reference landing speed (VREF) to the reference stalling speed in the landing configuration (VSRO) is that VREF may not be below:
a) 1.23VSRO
b) VSRO
c) 1.1 VSRO
d) 1.32 VSRO
24. V2 has to be equal to or higher than
a) 1.1 VMCA
b) 1.15 VMCG
c) 1.1 VSO
d) 1.15 VR.
25. The value of V1 has to be equal to or higher than:
a) VMCG
b) VMC
c) VR
d) V2
26. In accordance with JAR 25 the take-off safety speed V2min for turbo-propeller powered aeroplanes with more than three engines may not be less than:
a) 1.08 VSR
b) 1.2 VSR
c) 1.13 VSR
d) VSR