Inflight Icing Conditions and Safety Measures

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What is the main function of the de-ice fluid discussed in the passage?

To heat up the aircraft components

To increase the aircraft's speed

To prevent ice formation on the aircraft components (correct)

To cool down the aircraft components

Which component of the aircraft is sprayed with de-icing fluid in the windshield de-ice system?

Windshield (correct)

Engine

Propeller

Wing

What mechanism is used to control the fluid flow rate in each pump motor?

Switch

Fuse

Battery

Rheostat (variable resistor) (correct)

Where is the stationary nozzle installed in the propeller de-icing system?

Behind the propeller on the engine nose case Signup and view all the answers

What is the purpose of a slinger ring in the anti-icing system?

To distribute fluid to each propeller blade Signup and view all the answers

What role does a pump play in an anti-icing system?

To deliver fluid to the propeller and nozzles Signup and view all the answers

What is the purpose of the warning light in the cockpit?

To signal when the resonant frequency of the probe has reduced due to ice formation Signup and view all the answers

How is the resonant frequency induced in the coil around the probe?

Through an oscillator Signup and view all the answers

What mechanism keeps the probe heater on for a brief period?

A 5-second time delay Signup and view all the answers

Why does ice formation on the probe lead to a reduction in its resonant frequency?

As a result of added weight from the ice Signup and view all the answers

What happens if ice re-forms within the 55-second period while the warning light remains on?

The process of melting and switching off is repeated Signup and view all the answers

How does the ice shave system in aircraft detect ice formation on the probe?

By detecting a reduction in resonant frequency due to ice Signup and view all the answers

What is the preferred method of ice control for propellers?

Rubber boots with embedded heater wires Signup and view all the answers

How is ice melted on the rubber boots attached to the propeller blades?

By passing electrical current through embedded wires Signup and view all the answers

What is the purpose of the timer unit in the electrical propeller ice control system?

To control the sequence of current to the heater mats Signup and view all the answers

Why are electric elements set in insulating material on the propeller leading edges and spinner?

For de-icing purposes Signup and view all the answers

What is the significance of heating a consistent portion of each blade at the same time?

To aid in de-icing effectiveness Signup and view all the answers

Which component plays a key role in carrying away the loosened ice from the propeller blades?

Centrifugal force Signup and view all the answers

In which type of clouds is structural icing possible at very high altitudes?

Cumuliform clouds with strong updrafts Signup and view all the answers

At what altitude is icing rare due to frozen droplets in clouds?

Between 3,700 m (12,139 ft) and 4,900 m (16,076 ft) Signup and view all the answers

When does the potential for severe icing occur at almost any level?

In cumuliform clouds with strong updrafts Signup and view all the answers

Which classification of ice is formed due to its appearance as clear ice?

Glaze or clear ice Signup and view all the answers

At what temperature range is medium icing categorized?

-15°C to -30°C Signup and view all the answers

What altitude range is specified for most catastrophic inflight icing accidents?

Between 3,700 m (12,139 ft) and 4,900 m (16,076 ft) Signup and view all the answers

What type of power is supplied to the probe heater during testing on the ground?

26-V AC power Signup and view all the answers

Which system controls the air-to-ground mode switch for the heaters?

Aircraft bleed air manifold Signup and view all the answers

What is the purpose of the relays R7421 and R8268 during testing?

To supply power to the probe heater Signup and view all the answers

Which type of power is used by most systems when operating in air mode?

115-V AC power Signup and view all the answers

What is the purpose of the small line directed from the aircraft bleed air manifold?

To provide heated air for anti-icing Signup and view all the answers

Which heaters are designed for continuous operation in freezing flight conditions?

Ribbon Blanket Wrap around patch Gasket heaters Signup and view all the answers