What is the Brake Anti Skid System in Aircraft?
When driving a vessel in icy conditions, drivers will often implement certain brake procedures to prevent the risk of skidding on the road and causing a major accident. Even while skidding, there are methods for how to control skidding using the brake. Aircraft also have something similar, but in addition to certain measures, they have an anti skid brake system in place that can help in certain skidding or potential skidding situations. For more information, read about that here.
An anti skidding system has various designs but each tend to do the same or similar function. There are various designs of anti-skid systems. Most contain three main types of components: wheel speed sensors, antiskid control valves, and a control unit. These units work together without human interference. Some anti-skid systems provide complete automatic braking. The pilot needs only to turn on the auto brake system, and the anti-skid components slow the aircraft without pedal input. Ground safety switches are wired into the circuitry for anti-skid and auto brake systems. Wheel speed sensors are located on each wheel equipped with a brake assembly. Each brake also has its own anti-skid control valve. Typically, a single control box contains the anti-skid comparative circuitry for all of the brakes on the aircraft.
The reason that aircraft require anti-skid systems, but not cars is because larger aircrafts typically have a harder time being controlled or stopping when they are at risk of skidding. Not only that, but skidding in a car is immediately noticeable. When a large aircraft begins to skid, the flight deck is not immediately aware, as the wheel stops rotating and begins to skid. This is especially true for those situations with aircraft that have multiple-wheel main landing gear assemblies. If a skid is not controlled, it can quickly lead to a tire blowout, resulting in possible damage to the aircraft, and control of the aircraft may be lost. This is why we have an anti-skid system. It can not only detect a wheel skid, but it can also signal when a wheel skid is imminent. It can relieve pressure to the brake pistons of the wheel by way of linking the pressurized brake fluid area to the hydraulic system return line. What this does is permit the wheel to rotate and avoid a skid. Lower pressure is then maintained to the brake at a level that slows the wheel without causing it to skid.
To make you anti skid brakes and methods more efficient, the wheels must slow down in speed so as to mitigate skidding or potential for skidding. If a wheel decelerates too fast, it can be a signal that the brakes are about to lock and cause a skid. In order to guarantee that this does not occur, the wheels of the aircraft must have someone watch it so as to make sure the deceleration rate faster than a preset rate. When too much lag in speed is detected, the hydraulic pressure is reduced to the brake on that wheel. To operate the anti-skid system, flight deck switches must be placed in the ON position. Only as soon as the aircraft touches down on the runway can the pilot implement pressure to the rudder brake pedals and engage the anti skidding brake system. The anti-skid system can then shut off the power until the speed of the aircraft has dropped to approximately 20 mph. This is when the anti brake skidding system can go back to manual braking mode for the sake of ground maneuvering and slow taxiing.
If you are in need of sourcing any such anti skidding brake system, you can source nad trust the folks at Aviation Parts Online to fulfill your need. Aviation Parts Online is a leading distributor of brake anti-skid systems & its components, including hydraulic systems, wheel speed sensors, skid control valves, control units, aircraft wheels and more.
Share
