CDB Application Increases Component Life
How less vibration is maximizing component life?
One of the key areas of interest for prospective users of CDB is its ability
to maximize component life throughout the drivetrain and indeed the aircraft. By
reducing harmonic resonant high frequency vibration (HRHFV) in the drivetrain,
and periodically checking and re-balancing the aircraft as required, the
aircraft can achieve and maintain a minimum vibration profile over its life.
Helicopters without CDB will have a certain (higher) rate of vibration increase,
which is as components wear over time; their vibration levels will increase at a
certain rate. This rate historically is exponential in nature.
CDB is a "Preventive Maintenance Process"; it keeps the component vibration
deterioration rate low and moves component lifetime closer to TBO. The longer a
dynamic component remains on-wing, the lower the operating cost to the operator
Even to a relatively new helicopter fleet, PREVENTING MEASURES such as
Customized Dynamic Balancing (CDB) could bring significant benefits in extending
the life of the helicopter airframe by maintaining a minimum HRHFV profile
throughout the airframe's life.
The figure below conceptually illustrates how preventive maintenance using CDB
can maximize component life.
For illustrative purposes, data from the CDB technician's past experience with
the Apache Helicopter around the world was studied to show the possible impact
to Apache component's life and cost savings. Five years of data were merged as
the basis for this analysis. Thirteen different components from the drivetrain
were selected, based on their cost and critical nature to the aircraft. Flight
hours were used as the basis for normalizing all data for comparison purposes
and parts usage was analyzed on a per aircraft basis. The data shows dramatic
reduction in component replacement. To learn more about the direct impact on
drivetrain components and the positive impact on the fuselage please contact us.