Podcast
Questions and Answers
What happens to the contacts when ice forms on the diaphragm?
What happens to the contacts when ice forms on the diaphragm?
- They close, supplying current to an ice warning light and a heater. (correct)
- They short-circuit, activating the rotor-driven motor.
- They become non-functional until the ice melts.
- They open, causing the crew to take de-icing action.
What is the purpose of the heater in the probe mentioned in the text?
What is the purpose of the heater in the probe mentioned in the text?
- To melt any ice formed on the probe. (correct)
- To activate the micro-switch for the warning light.
- To enhance the current draw of the electric motor.
- To increase pressure on the diaphragm.
How is a warning light signal activated in case enough ice forms on the rotor?
How is a warning light signal activated in case enough ice forms on the rotor?
- By decreasing the motor speed.
- By increasing the motor torque and twisting it slightly. (correct)
- By turning off the detection probe heater.
- By activating the diaphragm contacts.
Why does ice forming on the rotor cause an increase in motor torque?
Why does ice forming on the rotor cause an increase in motor torque?
How is icing cessation detected in relation to the rotor-driven motor?
How is icing cessation detected in relation to the rotor-driven motor?
What happens when the drum slows down and draws more current?
What happens when the drum slows down and draws more current?
What source of power is used to supply the drain mast heater circuit when the ground handling bus is powered?
What source of power is used to supply the drain mast heater circuit when the ground handling bus is powered?
What happens to the windshield wipers on the aircraft when the windshield is dry?
What happens to the windshield wipers on the aircraft when the windshield is dry?
Which motor type is NOT commonly used to power aircraft windshield wipers?
Which motor type is NOT commonly used to power aircraft windshield wipers?
What voltage is supplied to the heaters of the drain mast when the aircraft is in operation?
What voltage is supplied to the heaters of the drain mast when the aircraft is in operation?
What is the purpose of ensuring that the windshield is clear of foreign matter before operating the wipers?
What is the purpose of ensuring that the windshield is clear of foreign matter before operating the wipers?
Which relays control the supply of power to the drain mast heaters when power is provided to the main airplane buses?
Which relays control the supply of power to the drain mast heaters when power is provided to the main airplane buses?
What is the purpose of inflating the de-ice boots on an aircraft?
What is the purpose of inflating the de-ice boots on an aircraft?
How long do the de-ice boots inflate for during a 'cold' sequence?
How long do the de-ice boots inflate for during a 'cold' sequence?
What is the timeframe for deflating the de-ice boots in a 'warm' sequence?
What is the timeframe for deflating the de-ice boots in a 'warm' sequence?
How should de-icer boots be cleaned according to the text?
How should de-icer boots be cleaned according to the text?
What is used to remove oil and grease from the surface of de-icer boots?
What is used to remove oil and grease from the surface of de-icer boots?
Why is it important to keep de-icer boots clean?
Why is it important to keep de-icer boots clean?
Where are the worst continuous icing conditions typically found?
Where are the worst continuous icing conditions typically found?
At what altitude range do most catastrophic in-flight icing accidents occur?
At what altitude range do most catastrophic in-flight icing accidents occur?
In which type of clouds can structural icing occur at altitudes above 30,000 ft?
In which type of clouds can structural icing occur at altitudes above 30,000 ft?
What is the main reason that icing is rare above altitudes of 16,000 ft?
What is the main reason that icing is rare above altitudes of 16,000 ft?
What is a characteristic of glaze or clear ice?
What is a characteristic of glaze or clear ice?
What can distort the freezing level in cumuliform clouds causing severe icing potential?
What can distort the freezing level in cumuliform clouds causing severe icing potential?
What component changes the rotary motion of the motor to the oscillating motion required by the wiper blades?
What component changes the rotary motion of the motor to the oscillating motion required by the wiper blades?
Which part determines the stroke arc of the wiper blades?
Which part determines the stroke arc of the wiper blades?
What part keeps the wiper blade vertical and governs the wiper pattern?
What part keeps the wiper blade vertical and governs the wiper pattern?
How is the spring tension against the windshield obtained?
How is the spring tension against the windshield obtained?
What supports the end of the guide arm?
What supports the end of the guide arm?
How can one remove the wiper for maintenance?
How can one remove the wiper for maintenance?
