AS9120B, ISO 9001:2015, and FAA 0056B Accredited

Understanding Hydraulic Systems in Aircraft

Hydraulic systems are crucial components in the operation of modern aircraft, playing a pivotal role in controlling various essential functions such as landing gear deployment and wheel brake activation. Understanding the intricacies of these systems is paramount to ensuring the safety and efficiency of air travel. In this blog, we will delve into the fundamentals of hydraulic systems in aircraft, exploring the key elements that make them indispensable in aviation.

At the core of hydraulic systems lies hydraulic fluid, a specially formulated substance designed to transmit power within the system. This fluid, typically an incompressible liquid, serves as the medium through which force is transferred from one point to another. The significance of hydraulic fluid lies in its ability to withstand high pressure and temperature variations, providing a reliable means of transmitting power without sacrificing precision.

Hydraulic pumps are the workhorses of these systems, responsible for generating the force required to move hydraulic fluid through the various components. These pumps come in different types, most commonly being gear, vane, and piston pumps. Each type has its own set of advantages and disadvantages, but all are engineered to deliver the necessary power for the smooth operation of hydraulic systems in an aircraft.

One of the primary applications of hydraulic systems in aviation is the deployment and retraction of landing gear, and the controlled and synchronized movement of such assemblies is essential for ensuring safe takeoff and landing. Hydraulic actuators, powered by hydraulic pumps, drive the landing gear to extend for landing and retract for flight. The use of hydraulic systems in this context allows for a reliable and efficient means of managing the landing gear, contributing significantly to the overall safety of flight operations.

Additionally, hydraulic systems are instrumental in the functioning of wheel brakes on aircraft. The reliable and timely activation of wheel brakes is crucial for bringing a plane to a halt after landing or during taxiing, and hydraulic pressure is used to engage the brake calipers, causing them to clamp down on the aircraft's wheels. This process is carefully controlled to ensure a smooth and controlled deceleration, preventing skidding or uneven braking. The use of hydraulic systems in wheel brakes enhances the precision of braking and contributes to the overall reliability of the aircraft's ground operations.

In the realm of aviation, precision and reliability are paramount, and hydraulic systems play a pivotal role in upholding these standards. The controlled application of hydraulic power ensures that critical functions such as landing gear deployment and wheel brake activation occur with the utmost accuracy. This level of control is vital, especially during critical phases of flight, where precision can be a deciding factor in the safety of the aircraft and its occupants.

In conclusion, understanding hydraulic systems in aircraft is fundamental to comprehending the intricate web of components contributing to precision and reliability in modern aviation operations. From hydraulic fluid to pumps, landing gear, and wheel brakes, each element plays a crucial role in ensuring the aircraft's safe and efficient operation. The integration of hydraulic systems reflects the aviation industry's commitment to harnessing advanced technology for the advancement of air travel, emphasizing the importance of precision and reliability in every flight.

For your procurement needs, we invite you to explore our product range at your convenience and utilize our online RFQ service for swift and straightforward quotes. Upon receiving and reviewing your completed form, a team member will contact you within 15 minutes or less to provide a tailored solution for your comparative assessment. Commence your procurement journey today and experience why numerous customers consistently choose The Aviation Mart for their part fulfillment requirements.


Semiconductor's Certifications and Memberships
The only independent
distributor with a
  • All Orders are fulfilled in the U.S.A.
  • All shipments must comply with U.S.A export laws.
  • No exceptions.

“We Proudly Support Intrepid Fallen Heroes Fund that serves United States Military Personal experiencing the Invisible Wounds of War : Traumatic Brain Injury (TBI) and Post Traumatic Stress (PTS). Please visit website ( and help in their valiant effort”.

Thank You for Visiting The Aviation Mart today.

If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.

Request for Quote

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.