BRAKE PEDAL GEOMETRY

Brake pedal geometry plays an important role in the performance of a brake system. The brake cylinder must deliver the proper pressure and fluid volume to the caliper for optimum braking. All Grove Aircraft brake systems are designed to work well together and with other high pressure systems from other manufacturers.

A general rule-of-thumb is to design the brake pedal geometry to have a 2 to 1 ratio of pedal travel to brake cylinder travel. Thus, 1" of pedal travel will result in 1/2" of cylinder travel. A pedal force of about 75 pounds will result in an adequate 500 psi force to the brake caliper using a standard 5/8" piston bore master cylinder.

 

 

BRAKE SYSTEM PLUMBING

The drawing to the right represents a typical brake plumbing installation

Note: The most "upstream" componet must be a reservoir.  You can use either a master cylinder with integral resevoir, or a separate remote reservoir.

 
     

KINETIC ENERGY
One of the functions of the brake system is to absorb the heat energy developed during braking.  The majority of this heat is absorbed by the brake disc.  The larger the mass of the disc, the more heat energy it is able to absorb.  A well designed brake system will provide adequate disc mass without excessive weight.  The kinetic energy required to stop an aircraft is a function of the mass (weight) of the aircraft multiplied by the square of its landing speed.

Calculate the kinetic energy for your aircraft by entering whole numbers (no comma separators) into the form below.

 
Landing Weight: lbs.

Number of Wheels with Brakes:

"Begin Braking" Speed: Kts MPH

Kinetic Energy per wheel = ft-lbs.