Atmospheric Composition and Pressure
30 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the approximate air pressure at the earth's surface?

  • 10.7 psi
  • 19.1 psi
  • 14.7 psi (correct)
  • 17.3 psi
  • In which region of the atmosphere do aircraft typically fly?

  • Thermosphere
  • Mesosphere
  • Stratosphere
  • Troposphere and the lowest part of the Stratosphere (correct)
  • What is the primary characteristic of the troposphere?

  • Extremely high air pressure
  • Gradual decrease in temperature
  • Constant weather conditions
  • All the world's weather is contained in it (correct)
  • What is the approximate altitude range in which civil aircraft typically operate?

    <p>Up to 45,000ft</p> Signup and view all the answers

    How does atmospheric pressure change with altitude?

    <p>It progressively reduces with altitude</p> Signup and view all the answers

    What is the layer of the atmosphere above the troposphere?

    <p>Stratosphere</p> Signup and view all the answers

    What is the term 'psid' used for in pressure measurement?

    <p>Differential pressure measurement</p> Signup and view all the answers

    What is the purpose of a manifold pressure gauge?

    <p>To reference measured pressure to a vacuum</p> Signup and view all the answers

    How does temperature affect an aneroid capsule?

    <p>It makes it less malleable</p> Signup and view all the answers

    Why do instruments need to compensate for temperature changes?

    <p>To ensure the instrument's movement is not affected by temperature</p> Signup and view all the answers

    What is the primary reason for the decrease in air density as altitude increases?

    <p>The air expands and cools</p> Signup and view all the answers

    What is the purpose of a bimetallic strip?

    <p>To measure temperature</p> Signup and view all the answers

    What is the name of the region where virtually all weather phenomena take place?

    <p>Troposphere</p> Signup and view all the answers

    What happens when a bimetallic strip is heated?

    <p>It curls in one direction</p> Signup and view all the answers

    What is the purpose of the International Standard Atmosphere (ISA)?

    <p>To provide a standard set of conditions for aircraft performance calculations</p> Signup and view all the answers

    What is the temperature at the tropopause?

    <p>-56 °C</p> Signup and view all the answers

    What is the primary reason for air to rise in the atmosphere?

    <p>Decreased density</p> Signup and view all the answers

    What is the ICAO abbreviation for?

    <p>International Civil Aviation Organisation</p> Signup and view all the answers

    What is the primary purpose of fitting probe covers with a trailing warning flag to a pitot static probe while the aircraft is on the ground?

    <p>To prevent damage and reduce the risk of water and insect ingress</p> Signup and view all the answers

    What is the consequence of not aligning the pitot static probe correctly?

    <p>Inaccurate airspeed readings</p> Signup and view all the answers

    What is the potential consequence of an insect nest in the pitot port?

    <p>Airspeed indication failure</p> Signup and view all the answers

    What is the recommended practice when it comes to the handling of pitot static probes?

    <p>Handle the probe with care to avoid bending or twisting</p> Signup and view all the answers

    What should take precedence over general maintenance practices for pitot static systems?

    <p>The aircraft's maintenance manual</p> Signup and view all the answers

    What was the cause of the rejected take-off in the 2013 Airbus A330 incident in Brisbane, Australia?

    <p>Insect nest in the pitot port</p> Signup and view all the answers

    What is the purpose of the calibrated leak in the metering unit of the vertical speed indicator?

    <p>To vent static pressure to the interior of the case</p> Signup and view all the answers

    What happens to the static pressure inside the capsule during straight and level flight?

    <p>It remains constant and equal to that inside the instrument case</p> Signup and view all the answers

    What is the function of the capillary tube in the vertical speed indicator?

    <p>To supply static pressure to the inside of the capsule</p> Signup and view all the answers

    What happens to the pointer on the dial during a climb?

    <p>It rotates to indicate a climb condition</p> Signup and view all the answers

    What component of the vertical speed indicator connects to the static pressure system of the aircraft?

    <p>The mechanism</p> Signup and view all the answers

    What is the function of the rocking shaft and sector gear in the vertical speed indicator?

    <p>To rotate the pinion and pointer assembly</p> Signup and view all the answers

    More Like This

    Atmospheric Composition and Pressure
    35 questions
    Aircraft Performance and Altitude
    30 questions
    Theory of Flight Overview
    5 questions
    Use Quizgecko on...
    Browser
    Browser