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How AVES Can Improve Helicopter Safety

Helicopter vibrations are a serious problem. They can cause fatigue damage to the helicopter's components, leading to premature failure. Vibrations can also make it difficult for pilots to control the helicopter, increasing the risk of accidents.


AVES stands for Active Vibration Electronic System.


The AVES (Active Vibration Electronic System) is a proprietary vibration control system developed by the German Aerospace Center (DLR). It is designed to reduce noise and vibration levels in helicopters, making them more comfortable for passengers and crew.


The AVES system works by using sensors to measure vibration levels in the helicopter. This data is then processed by a computer, which generates control signals for actuators that can adjust the pitch of the helicopter's rotor blades. This helps to reduce vibration levels and improve the helicopter's ride quality.


How AVES Works


The AVES system consists of three main components:


Sensors: These sensors measure the vibrations of the helicopter. They can be accelerometers, gyroscopes, or strain gauges.


Actuators: These actuators counteract the vibrations. They can be hydraulic actuators, electric actuators, or piezoelectric actuators.


Control system: This computer controls the actuators. It receives data from the sensors and then calculates the necessary forces to counteract the vibrations.


The AVES system is typically activated when the helicopter is in flight. It can also be activated on the ground, but this is not usually necessary.


The AVES system has been shown to be effective in reducing vibrations in helicopters. In one study, the AVES system was shown to reduce vibrations by up to 70%. This can significantly improve the safety of helicopter operations.



Here are some of the benefits of using AVES in helicopters:


Improved ride quality: The AVES system can significantly reduce the vibrations felt by passengers and crew, making the helicopter a more comfortable ride.


Reduced fatigue damage: The AVES system can help to reduce the fatigue damage to the helicopter's components, extending its lifespan.


Improved performance: The AVES system can help to improve the helicopter's performance by reducing the drag caused by vibrations.


Increased safety: The AVES system can help to reduce the risk of accidents caused by vibrations, such as pilot disorientation or loss of control.


We asked a helicopter pilot who has experience with AVES:


Q: What are your thoughts on the AVES system?


A: I think the AVES system is a great way to improve helicopter safety. It has made a big difference in the comfort of my passengers and the performance of my helicopter. I would definitely recommend it to other pilots.



*The AVES system is currently used in the following helicopters:


Eurocopter EC135

Airbus Helicopters H130

Leonardo AW169

Sikorsky S-76D




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