Engine vibration monitoring
Monitoring engine health through vibration analysis
In addition to rotor track and balance, Helitune provides engine vibration monitoring solutions for helicopter and fixed-wing aircraft engines. These systems support accurate vibration measurement during engine testing, installation and in-service operation, helping identify imbalance, misalignment and other vibration-related issues.
Engine vibration monitoring plays a critical role in protecting engine components, supporting maintenance decisions and ensuring compliance with manufacturer requirements.
Understanding engine vibration and imbalance
Imbalance within rotating engine components generates radial loads at rotational frequencies, commonly referred to as 1R bearing frequencies. These loads are transmitted into the surrounding structure, producing vibration at corresponding frequencies throughout static engine components.
The highest vibration and stress levels typically occur when engines pass through critical speeds during run-up and run-down. Monitoring vibration behaviour through these regimes provides valuable insight into engine condition and balance.
Engine testing and manufacturer requirements
Most engine manufacturers mandate vibration checks at multiple stages of the engine lifecycle. These checks are carried out during transitions between transient and steady-state operation to identify imbalance or abnormal vibration behaviour.
Before installation on aircraft, engines are commonly assessed on test beds, where vibration monitoring can also highlight issues related to suspension, mounting or misalignment. Helitune systems support both test-bed and aircraft-installed monitoring requirements.
Helitune engine vibration monitoring systems
Helitune provides complete engine vibration monitoring systems, including:
- High-temperature-rated transducers
- Aircraft-approved cabling and mountings
- Signal conditioning and data acquisition hardware
Systems are configured to meet OEM-defined power settings, frequency ranges and operating conditions, ensuring accurate and repeatable measurements in demanding environments.
Approved solutions and operational use
Helitune engine vibration monitoring systems are approved for use on a range of helicopter and fixed-wing aircraft engines and are deployed worldwide in both testing and operational environments.
Our engineering and support teams work closely with customers to ensure systems are correctly specified, installed and applied in accordance with manufacturer and operational requirements.


