Which brake system is typically used on the main wheel axles of large aircraft?

The high-pressure, low displacement, multiple-disk brake system is commonly utilized on the main wheel axles of large aircraft due to its ability to provide significant braking force while minimizing weight and space requirements. This type of brake system consists of multiple friction discs, which can be engaged and disengaged, allowing for efficient heat dissipation during operations. The design effectively handles the high demand for stopping power that large aircraft require, especially during landing and takeoff scenarios where the gravitational force and momentum are considerable.

The construction of this brake system allows for higher pressures to be applied with less hydraulic fluid displacement compared to single-disk systems. Additionally, the multiple-disk configuration spreads braking forces over a larger surface area, which enhances braking efficiency and prolongs the life of the components. This advanced design is crucial for the performance and safety of large aircraft, ensuring effective braking under various operational conditions.

Other braking systems, while they may have specific applications, do not offer the same balance of efficiency, weight, and effectiveness required for the rigorous demands of large aircraft, particularly in terms of handling heat and providing reliable stopping power.