Airspeed Indicator Mechanism
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Questions and Answers

What does the airspeed indicator measure?

  • The altitude of the airplane in the sky
  • The temperature of the air around the airplane
  • The speed of the airplane relative to the ground
  • The differential pressure between pitot air and static air pressure (correct)
  • How is the diaphragm of the airspeed indicator affected as the airplane increases speed?

  • It expands due to increasing pitot air pressure (correct)
  • It contracts due to decreasing air pressure
  • It remains constant regardless of airspeed
  • It fluctuates randomly with air pressure changes
  • What is the function of the mechanical linkage in the airspeed indicator?

  • To measure the static air pressure
  • To provide a backup reading in case of instrument failure
  • To convert diaphragm movement into an indicated speed reading (correct)
  • To stabilize the diaphragm at high speeds
  • In which units is the instrument dial of the airspeed indicator calibrated?

    <p>Knots and miles per hour</p> Signup and view all the answers

    What is indicated by the operating range markings on the airspeed indicator?

    <p>The range of safe operation for the airplane's speed</p> Signup and view all the answers

    How long can the external lithium-ion battery of the G5 provide emergency power?

    <p>4 hours</p> Signup and view all the answers

    Under what condition does the G5 use its internal battery?

    <p>When all electrical power is lost to the aircraft</p> Signup and view all the answers

    What does the G5 do when the main bus is not active?

    <p>It charges the standby battery</p> Signup and view all the answers

    In which scenario does the G5's external battery charge?

    <p>Whenever the aircraft is powered</p> Signup and view all the answers

    What type of battery does the G5 utilize for emergency power?

    <p>Lithium-ion battery</p> Signup and view all the answers

    Study Notes

    Airspeed Indicator Functionality

    • Indicates the airplane's speed relative to the air.
    • Operates on differential pressure between pitot air and static air pressure.

    Instrument Design

    • Diaphragm connected to pitot air source for accurate pressure reading.
    • Case vented to static air system for stabilization.

    Mechanism of Action

    • Increased speed results in higher pitot air pressure.
    • Diaphragm expansion triggers mechanical linkage to move the instrument pointer.

    Calibration and Measurement

    • The instrument dial displays speed in knots and miles per hour.
    • Contains operational range markings to ensure safe flying conditions.

    G5 Battery System Overview

    • The G5 features an external lithium-ion battery for emergency power supply.
    • This battery can provide up to 4 hours of power in emergency situations.
    • The G5 automatically charges the external battery whenever the aircraft is powered.
    • It maintains a connection to the aircraft's main bus for proper charging functions.

    Emergency and Standby Power

    • When the main bus is inactive, the G5 still charges the standby battery using the active emergency bus.
    • The internal battery of the G5 activates only when there is a complete loss of electrical power to the aircraft, ensuring power continuity during critical failures.

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    Description

    This quiz explores the functioning of the airspeed indicator, a crucial instrument in aviation that measures the speed of an airplane through the air. It involves understanding the differential pressure readings and the mechanical components that respond to changes in speed. Test your knowledge on the principles of aerodynamics and instrument mechanics with this focused quiz.

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