Q1. ** If the static pipe becomes completely blocked?
Correct answer is – The VSI indication will settle down to zero.
Q2. ** If the static pipe becomes completely blocked?
Correct answer is – The VSI indication will settle down to zero.
Q3. ** In the VSI, lag error:
Correct answer is – is overcome by using a special dashpot accelerometer assembly
Q4. As an aircraft moves close to the ground during a landing the VSI might?
Correct answer is – Become inaccurate due to ground effect.
Q5. ** If the static pipe becomes partly blocked?
Correct answer is – The VSI indication will be too low when climbing or descending.
Q6. If the static vent becomes blocked during a climb:
Correct answer is – the VSI will return to zero
Q7. A VSI?
Correct answer is – Measures the difference between the pressure inside and outside a capsule.
Q8. ** When entering a steep turn, an VSI is likely to show:
Correct answer is – a climb
Q9. ** The vertical speed indicator indications may be in error for some seconds after starting or finishing a climb or descent. The error is a result of:
Correct answer is – a combination of time lag and manoeuvre induced errors
Q10. ** If the static pipe becomes partly blocked?
Correct answer is – The VSI indication will be too low when descending.
Q11. Permissible limits of accuracy of the VSI are …… when …… within a temperature range of …… and …… outside this range.
Correct answer is – ± 200 fpm, on the ground, -20°C to +50°C, +/-300 fpm
Q12. *** In conditions of clear air turbulence:
Correct answer is – the IVSI is more sensitive
Q13. If the casing of a VSI in a pressurized aircraft develops a leak?
Correct answer is – VSI indications will be too high when climbing and too low when descending.
Q14. ** If the pitot pipe becomes partly blocked?
Correct answer is – The VSI will not be affected.
Q15. ** If the choke in the VSI becomes partly blocked?
Correct answer is – The VSI indication will be too high when climbing or descending.
Q16. * The response rate of a VSI can be improved by fitting a?
Correct answer is – Accelerometer system.
Q17. The correct action is to be taken when the static vent blocks on an unpressurized aircraft to stabilize the correct static pressure.
Correct answer is – Use the standby static source.
Q18. * The advantage of having the VSI dial presentation in logarithmic spacing rather than in linear spacing is that:
Correct answer is – at low rates of climb or descent the pointer movement is much larger and so is more easily read
Q19. A VSI indicates increasing ROD by?
Correct answer is – VSI needle moving downwards.
Q20. *** Change of temperature as an aircraft climbs or descends:
Correct answer is – is compensated at the metering unit by means of a capillary and orifice.
Q21. *** Because the VSI measures rates of change of static pressure and not actual values of static pressure, position error:
Correct answer is – may cause errors in the VSI during the take-off run
Q22. VSI lag is reduced by?
Correct answer is – Two dashpots responding to acceleration.
Q23. What should the VSI indicate when an aircraft on a 3-degree glide slope is flying at 100 Kts TAS?
Correct answer is – 524 fpm descent.