Carbon Brakes vs Steel Brakes in Non-Aircraft Applications

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?

Firm (B) Signup and view all the answers

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

To increase braking efficiency (B) Signup and view all the answers

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

Center carrier (A) 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?

Carbon brake (A) Signup and view all the answers

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

Maintain strength and dimensions at high temperatures (D) Signup and view all the answers

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

High cost of manufacturing (A) Signup and view all the answers

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

To direct hydraulic fluid under pressure into the tube (D) Signup and view all the answers

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

Carbon brake (A) Signup and view all the answers

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

It uses a fabric-reinforced neoprene tube around the wheel (A) Signup and view all the answers

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

Hydraulic system (B) Signup and view all the answers

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

By pressing on the rudder pedal (C) 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?

Inadequate volume and pressure capabilities (C) Signup and view all the answers

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

Shuttle valve (D) Signup and view all the answers

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

Alternate antiskid valve (D) Signup and view all the answers

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

Regulate hydraulic fluid pressure (A) Signup and view all the answers

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

Brake metering valve (B) Signup and view all the answers

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

Through a series of springs and pistons (D) Signup and view all the answers

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

The pedal feels light and easy to press (C) Signup and view all the answers

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

They are not connected (C) Signup and view all the answers

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

To provide redundancy in case of failure (B) Signup and view all the answers

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

Because the system is depressurized (C) Signup and view all the answers

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

To return the piston into the housing chamber when hydraulic pressure is relieved (D) 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?

They are compressed together creating friction and heat (B) Signup and view all the answers

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

To mount through the center carrier and backplate (D) Signup and view all the answers

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

To provide more stopping power (C) Signup and view all the answers

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

The piston is returned into the housing chamber by retracting springs (C) Signup and view all the answers

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

Multiple-disc brakes provide more stopping power (B) Signup and view all the answers