Carbon Brakes vs Steel Brakes in Non-Aircraft Applications
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Questions and Answers

What type of brake is a Cleveland brake on a light aircraft?

  • Drum brake
  • Hydraulic brake
  • Floating-disc brake
  • Fixed-disc brake (correct)

    • How many discs are used in a dual-disc brake system on aircraft?

  • Two discs per wheel (correct)
  • Three discs per wheel
  • One disc per wheel
  • Four discs per wheel

    • What should be the braking action for each main wheel when taxiing the aircraft?

  • Equal with uneven application of pedal pressure
  • Different with equal application of pedal pressure
  • Different with uneven application of pedal pressure
  • Equal with equal application of pedal pressure (correct)

    • What should the pedals feel like when applying brakes on an aircraft?

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

    Why are dual-disc brakes used on aircraft instead of single-disc brakes?

    <p>To increase braking efficiency</p> Signup and view all the answers

    In a dual-piston Cleveland brake assembly, what is located between the two discs?

    <p>Center carrier</p> Signup and view all the answers

    Which type of brake is known for withstanding two to three times the heat of a steel brake in nonaircraft applications?

    <p>Carbon brake</p> Signup and view all the answers

    What is a key advantage of carbon rotors over steel rotors?

    <p>Maintain strength and dimensions at high temperatures</p> Signup and view all the answers

    What is a significant factor that limits the use of carbon brakes on all aircraft?

    <p>High cost of manufacturing</p> Signup and view all the answers

    What is the purpose of the metal nozzle fitted on the inner surface of the expander tube?

    <p>To direct hydraulic fluid under pressure into the tube</p> Signup and view all the answers

    Which brake type is known for lasting twenty to fifty percent longer than steel brakes?

    <p>Carbon brake</p> Signup and view all the answers

    What is a characteristic of an expander tube brake according to the text?

    <p>It uses a fabric-reinforced neoprene tube around the wheel</p> Signup and view all the answers

    What is the source of power used in power brake actuating systems for aircraft?

    <p>Hydraulic system</p> Signup and view all the answers

    How does a pilot activate the brakes in an aircraft equipped with power brakes?

    <p>By pressing on the rudder pedal</p> Signup and view all the answers

    Why can't the volume and pressure of hydraulic fluid needed for braking be produced by a master cylinder?

    <p>Inadequate volume and pressure capabilities</p> Signup and view all the answers

    What component returns system hydraulic fluid used to boost brake pressure?

    <p>Shuttle valve</p> Signup and view all the answers

    Which valve is responsible for controlling the normal anti-skid function in an aircraft's power brake system?

    <p>Alternate antiskid valve</p> Signup and view all the answers

    What is the purpose of a shuttle valve in a power brake system for aircraft?

    <p>Regulate hydraulic fluid pressure</p> Signup and view all the answers

    What provides the majority of the rudder/brake pedal feel in a power brake system?

    <p>Brake metering valve</p> Signup and view all the answers

    How does the brake valve feel augmentation unit create force on the brake input shaft movement?

    <p>Through a series of springs and pistons</p> Signup and view all the answers

    What happens when slight pedal depression is applied for light braking?

    <p>The pedal feels light and easy to press</p> Signup and view all the answers

    In an emergency brake situation, how are the inboard and outboard wheel brakes connected?

    <p>They are not connected</p> Signup and view all the answers

    What is the purpose of having two separate brake assemblies for each main wheel assembly?

    <p>To provide redundancy in case of failure</p> Signup and view all the answers

    Why is auto brake pressure withheld from a certain port during landing gear retraction?

    <p>Because the system is depressurized</p> Signup and view all the answers

    What is the purpose of the retracting springs in the brake assembly?

    <p>To return the piston into the housing chamber when hydraulic pressure is relieved</p> Signup and view all the answers

    What do the steel stators and copper or bronze-plated rotors do when hydraulic pressure is applied to the piston?

    <p>They are compressed together creating friction and heat</p> Signup and view all the answers

    What is the purpose of the caliper mounting bolts in the brake system?

    <p>To mount through the center carrier and backplate</p> Signup and view all the answers

    Why are multiple-disc brakes used on large, heavy aircraft?

    <p>To provide more stopping power</p> Signup and view all the answers

    What happens when hydraulic pressure is relieved from the brake assembly?

    <p>The piston is returned into the housing chamber by retracting springs</p> Signup and view all the answers

    How do multiple-disc brakes compare to single or dual-disc brakes?

    <p>Multiple-disc brakes provide more stopping power</p> Signup and view all the answers

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