← Product News← Company News

Unveiling the Power of LVDT in Thrust Reverse Actuators (TRAS)

Tuesday, July 18, 2023

Linear Variable Differential Transformers, commonly known as LVDTs, have marked their prominent presence in various industrial applications. Their wide acceptance can be attributed to their unparalleled durability, excellent repeatability, and exceptional accuracy in position sensing. One of the noteworthy applications of LVDT is in Thrust Reverse Actuators (TRAS), a crucial component in modern aviation. This blog aims to shed light on the role of LVDT in TRAS, discussing their working principles, and how their synergy enhances the safety and efficiency of aircraft operation.

What are Thrust Reverse Actuators (TRAS)?

Thrust reversers are vital components used in aircraft engines to help slow down the aircraft during landing. Essentially, they are mechanisms that alter the airflow direction produced by the engine, thereby providing a 'reverse thrust' to decelerate the plane. The precision control of these thrust reversers is managed by Thrust Reverse Actuators.

TRAS are sophisticated devices designed to deploy and stow the thrust reversers accurately. The safety and efficiency of an aircraft landing significantly depend on the flawless operation of these actuators. Thus, the requirement for an extremely reliable sensing solution for these systems brings us to the application of LVDTs.

LVDT and its Application in TRAS

An LVDT is an electromechanical device used to convert the rectilinear motion of an object to which it is coupled mechanically into a corresponding electrical signal. They provide precise position feedback, making them a vital component in various control systems.

In the case of TRAS, LVDTs are used to provide feedback about the exact position of the thrust reverser. They deliver accurate and reliable readings of the thrust reverser's position, whether fully deployed, stowed, or at any intermediate position. This information is crucial to the pilots and the control systems, helping them make precise control decisions during the critical landing phase of a flight.


LVDTs are chosen for TRAS due to their numerous advantages:

High Precision: LVDTs offer high-resolution feedback without any need for electronic amplification. This precise position sensing is crucial for the accurate operation of thrust reversers.

Durability and Reliability: LVDTs are known for their robustness and can withstand harsh environmental conditions. They function reliably under extreme temperature conditions, high vibrations, and other demanding situations typically found in aircraft engines.

Long Lifecycle: LVDTs have no moving parts and hence experience less wear and tear. This characteristic makes them ideal for aerospace applications where long-term reliability is a key factor.

Non-contact Sensing: Since LVDTs utilize a non-contact method of measurement, they are immune to most forms of environmental damage that could affect other sensors, such as dust, moisture, etc.


In an industry where safety and precision are paramount, the application of LVDTs in Thrust Reverse Actuators presents an exemplary case of technological integration. As LVDT technology continues to advance, we can anticipate further enhancements in TRAS, facilitating even safer and more efficient aircraft operation. Therefore, understanding the interplay of LVDTs and TRAS deepens our appreciation for the intricate details that go into ensuring our safe air travel.

Interested in learning more?
Contact Us →