Podcast
Questions and Answers
What happens to the mercury column in a mercury barometer when atmospheric pressure increases?
What happens to the mercury column in a mercury barometer when atmospheric pressure increases?
- It is forced higher up the tube (correct)
- It remains at the same level
- It drops lower in the tube
- It is pushed out of the tube
What is the primary function of a pitot probe in an aircraft?
What is the primary function of a pitot probe in an aircraft?
- To measure airspeed (correct)
- To measure static pressure
- To detect moisture in the airstream
- To negate the effect of air temperature
Why would a mercury barometer not be practical to mount in an aircraft?
Why would a mercury barometer not be practical to mount in an aircraft?
- Because it is too heavy
- Because it is not suitable for changes in pressure at high altitudes (correct)
- Because it is too large
- Because it is not sensitive enough
Why is a small calibrated drain hole added to the pitot probe?
Why is a small calibrated drain hole added to the pitot probe?
What would be the result of using water instead of mercury in a barometer?
What would be the result of using water instead of mercury in a barometer?
What is the maximum operating range of an aneroid capsule?
What is the maximum operating range of an aneroid capsule?
What is the purpose of the electrical heater element in the pitot probe?
What is the purpose of the electrical heater element in the pitot probe?
What type of elements are used in an aircraft to measure atmospheric pressure?
What type of elements are used in an aircraft to measure atmospheric pressure?
What is the term used to describe the element that measures static pressure in an aircraft?
What is the term used to describe the element that measures static pressure in an aircraft?
In some light aircraft, what is the simple form of a static port?
In some light aircraft, what is the simple form of a static port?
What is the purpose of an aneroid capsule?
What is the purpose of an aneroid capsule?
What is the purpose of the static port in an aircraft?
What is the purpose of the static port in an aircraft?
What is the purpose of the third pointer or trace pointer in an altimeter?
What is the purpose of the third pointer or trace pointer in an altimeter?
What happens to the striped disc or cross hatch flag between 10 000 feet and 16 000 feet?
What happens to the striped disc or cross hatch flag between 10 000 feet and 16 000 feet?
What causes the aneroid capsules to expand and move the pointers in an altimeter?
What causes the aneroid capsules to expand and move the pointers in an altimeter?
What is the function of the vibrator in some aircraft altimeters?
What is the function of the vibrator in some aircraft altimeters?
How are the aneroid capsules sealed?
How are the aneroid capsules sealed?
What connects the case of the altimeter to the aircraft?
What connects the case of the altimeter to the aircraft?
What occurs when the spin axis of the rotor becomes aligned with the axis of the outer gimbal?
What occurs when the spin axis of the rotor becomes aligned with the axis of the outer gimbal?
What is a major issue with traditional Vertical Speed Indicators in helicopters?
What is a major issue with traditional Vertical Speed Indicators in helicopters?
Why are mechanical stops used in a gimbal system?
Why are mechanical stops used in a gimbal system?
What happens when the inner gimbal reaches the mechanical stops?
What happens when the inner gimbal reaches the mechanical stops?
What is the primary function of the accelerometer unit in an Instantaneous Vertical Speed Indicator?
What is the primary function of the accelerometer unit in an Instantaneous Vertical Speed Indicator?
What is the cause of unavoidable precession during aircraft maneuvering?
What is the cause of unavoidable precession during aircraft maneuvering?
How does the piston in the accelerometer respond to a change in vertical speed?
How does the piston in the accelerometer respond to a change in vertical speed?
What is the consequence of deflective forces being too strong or applied rapidly to a gyro rotor?
What is the consequence of deflective forces being too strong or applied rapidly to a gyro rotor?
What is the purpose of the spring in the accelerometer's design?
What is the purpose of the spring in the accelerometer's design?
What happens to the pressure inside the capsule during the initiation of a descent?
What happens to the pressure inside the capsule during the initiation of a descent?
What is the potential consequence of a gyro rotor toppling over?
What is the potential consequence of a gyro rotor toppling over?
How long does the accelerometer response typically last?
How long does the accelerometer response typically last?
