Aeroplane Aerodynamics and Systems: Temperature Compensation

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What is the primary function of the pitot probe in an aircraft?

To measure airspeed (correct)

To measure static pressure

To create additional pressure in the airstream

To detect changes in air temperature

What is the purpose of the calibrated drain hole in the pitot probe?

To allow air to enter the tube

To increase the pressure in the tube

To measure the air temperature

To negate the effect of moisture on airspeed readings (correct)

What is the term used to describe the detecting element that measures static pressure?

Pitot probe

Static port (correct)

Airspeed indicator

Static vent

What is the purpose of the electrical heater element in the pitot probe?

To prevent moisture from freezing Signup and view all the answers

In some light aircraft, what is the static vent often simply?

A hole drilled in the fuselage skin Signup and view all the answers

What is the result of the airstream coming to rest within the pitot probe?

The creation of additional pressure Signup and view all the answers

What connects the capsule’s interior to the pitot line of the aircraft’s pitot static system?

Capillary tube Signup and view all the answers

As the aircraft increases in altitude, what happens to the static pressure?

It decreases Signup and view all the answers

What is the purpose of the temperature compensating ranging lever in the airspeed indicator?

To correct for changes in the capsule’s elasticity with temperature Signup and view all the answers

What happens to the capsule material when the temperature increases?

It becomes more flexible Signup and view all the answers

What would be the effect of the temperature compensating ranging lever on the indicating element if the temperature increases?

It would over-read Signup and view all the answers

What is the reference point for the instrument readout in the airspeed indicator?

Atmospheric pressure Signup and view all the answers

What is the effect of an increase in ambient temperature on a bimetallic U bracket?

It does not affect the bracket's movement. Signup and view all the answers

What is the purpose of the pitot tube in a pitot static system?

To measure the ram pressure of the airstream Signup and view all the answers

Why are static ports located at right angles to the relative airflow?

To measure static pressure and not be affected by the speed of the aircraft Signup and view all the answers

What is the common location of static ports on an aircraft?

Along the sides of the fuselage Signup and view all the answers

What is the purpose of electric heaters in a pitot/static tube?

To prevent icing Signup and view all the answers

What type of pitot probe will be covered later in the training materials?

A pitot probe with static ports and electric heaters Signup and view all the answers

What is the primary purpose of the barometric adjustment knob on an altimeter?

To set the altimeter to read 0 feet at sea level Signup and view all the answers

What is the unit of measurement displayed by the barometric pressure setting window on the altimeter dial?

Millibars and/or inches of mercury Signup and view all the answers

Why is a sensitive altimeter critical for flight safety?

To maintain safe vertical separation between aircraft and terrain Signup and view all the answers

What is the source of atmospheric pressure information relayed to pilots?

Air traffic control Signup and view all the answers

What is the purpose of adjusting the altimeter to the local sea level pressure?

To set the altimeter to read 0 feet at sea level Signup and view all the answers

What is the benefit of being able to set the pressure reading on an altimeter?

It forms an important part of flight operating techniques Signup and view all the answers

What is a critical aspect of pitot static probe maintenance?

Maintaining the probe's alignment and condition Signup and view all the answers

Why should probe covers be fitted during ground operations?

To protect the probe from bending and twisting, and to reduce the risk of injury and blockages Signup and view all the answers

What was the cause of an airspeed indication failure during a rejected take-off in 2013?

A blocked pitot port due to a wasp nest Signup and view all the answers

When does the aircraft's maintenance manual take precedence?

At all times, when specific information is provided Signup and view all the answers

What is the purpose of the high visibility trailing warning flag on probe covers?

To provide a warning to personnel about the presence of the probe cover Signup and view all the answers

What is the primary concern when handling the pitot static probe?

Avoiding bending or twisting the probe Signup and view all the answers