Basic Hydraulic Principles

Basic Hydraulic Principles

Hydraulic systems provide a means of remotely controlling a wide range of components by transmitting a force through a confined fluid.

Because hydraulics can transmit high forces rapidly and accurately along lightweight pipes of any size, shape and length, they are the prime source of power in aircraft systems such as flying controls, retractable undercarriages, flaps, and wheelbrakes.

The basic principle behind any hydraulic system is very simple - pressure applied anywhere to a body of fluid causes a force to be transmitted equally in all directions, with the force acting at right angles to any surface in contact with the fluid. This is known as Pascal’s Law.


Basic Hydraulic Principles CBT

Basic Hydraulic Principles Instructor Pack

For instructors, schools and colleges, our instructor pack for basic hydraulic principles contains interactive material for the demonstration of all of the following:

A demonstration of Pascal's Law...
The relationship between hydraulic pressure and force...
How a simple hydraulic system works...
An example of a simple interactive hydraulic braking system...
How a hydraulic swash plate pump works...

Operation of a hydraulic NRV (non-return valve)...


Basic Hydraulic Principles Online Lesson

Basic Hydraulic Principles Online Lesson

Improve your understanding of Pascal's Law and basic hydraulic principles by trying our free online lesson.


Then see how much you've learned with our online quiz below!


Basic Hydraulic Principles Online Quiz

Online Quiz

Test your understanding of basic hydraulic principles with our short quiz made up of 8 multiple-choice questions.



These and other similar classroom training products can be purchased online now by visiting our la training products list.


Typical Aircraft Hydraulic Systems

Our expanding range of hydraulic system courseware includes overviews of the hydraulic systems on the following generic and specific aircraft types: