Flight Redemptions

What is EMDP in Aviation? (Electric Motor Driven Pump)

Updated: March 06, 2024

The Importance of Electric Motor Driven Pump (EMDP) in Aviation

In the world of aviation, numerous components and systems work together to ensure the safe and efficient operation of aircraft. One such crucial component is the Electric Motor Driven Pump (EMDP). The EMDP plays a vital role in various aircraft systems, contributing to the overall performance and reliability of the aircraft. In this article, we will explore the significance of the EMDP in aviation and its impact on different systems.

The Function and Benefits of Electric Motor Driven Pump (EMDP)

The Electric Motor Driven Pump, as the name suggests, is a pump that utilizes an electric motor to drive its operation. It is widely used in aviation for its efficiency, reliability, and versatility. The primary function of an EMDP is to provide hydraulic power to various aircraft systems, such as the landing gear, flight control surfaces, and brakes. By pressurizing hydraulic fluid, the pump ensures the smooth and precise operation of these critical systems.

One of the key benefits of an EMDP is its ability to operate independently of the aircraft's engine. Unlike engine-driven pumps that rely on the engine's power, the electric motor driven pump can function even when the engine is not running or in emergency situations where engine power may be compromised. This redundancy greatly enhances the safety and reliability of the aircraft, ensuring that essential systems can still operate even in challenging circumstances.

Moreover, the electric motor driven pump offers more precise control over hydraulic pressure compared to engine-driven pumps. This enhanced control allows for better maneuverability and responsiveness of the aircraft during critical phases of flight, such as takeoff, landing, and mid-flight adjustments. The EMDP's ability to provide consistent and accurate hydraulic power contributes to the overall flight safety and performance of the aircraft.

Application of Electric Motor Driven Pump (EMDP) in Various Aircraft Systems

The Electric Motor Driven Pump finds its application in several crucial aircraft systems. Let's explore some of these systems and understand how the EMDP plays a vital role in their operation:

Landing Gear System

The landing gear system of an aircraft is responsible for supporting the aircraft's weight during takeoff, landing, and ground operations. It consists of multiple components, including hydraulic actuators, valves, and, of course, the electric motor driven pump. The EMDP provides hydraulic power to extend and retract the landing gear, ensuring a smooth and controlled operation. Without the EMDP, the landing gear system would not have the necessary power to function, compromising the aircraft's ability to take off, land, or operate safely on the ground.

The EMDP's reliability is especially crucial during emergency situations, such as an engine failure during takeoff or landing. In such cases, the EMDP ensures that the landing gear can still be extended and locked into place using hydraulic power, allowing for a safe emergency landing.

Flight Control System

The flight control system of an aircraft consists of various surfaces, such as ailerons, elevators, and rudders, which are responsible for controlling the aircraft's attitude and direction of flight. These control surfaces rely on hydraulic power for their movement, and the electric motor driven pump plays a vital role in supplying the necessary hydraulic pressure.

During flight, precise control over these surfaces is essential for maneuverability and stability. The EMDP delivers consistent hydraulic power to the flight control system, ensuring accurate and immediate response to pilot inputs. This allows for precise and smooth control, enabling the aircraft to make critical adjustments during flight and maintain its desired trajectory.

Braking System

The braking system of an aircraft is crucial for safe landing and ground operations. It enables the aircraft to decelerate during landing and provides the necessary control for taxiing on the ground. The electric motor driven pump plays a crucial role in supplying hydraulic power to the braking system, ensuring optimal braking performance.

The EMDP provides consistent hydraulic pressure to the braking system, allowing for precise and proportional braking control. This is especially important during landing, where the aircraft must decelerate quickly and smoothly. The EMDP ensures that the brakes respond accurately to pilot inputs, contributing to the overall safety and efficiency of the landing process.


The Electric Motor Driven Pump (EMDP) is an essential component in aviation, providing hydraulic power to various critical aircraft systems. Its reliability, versatility, and precise control over hydraulic pressure make it an indispensable part of modern aircraft. From the landing gear system to the flight control system and braking system, the EMDP ensures the safe and efficient operation of these vital systems. With its ability to operate independently of the engine and deliver consistent hydraulic power, the EMDP enhances the overall performance, safety, and reliability of aircraft, contributing to a smooth and controlled flying experience.

Recent Posts