AIRFRAME Technology Single Layer Elastomeric Mount
Multi-Modulus Elastomeric Mount
Tuned Vibration Absorber
Hydraulic Mount Active Systems Hybrid
(combinations of above technologies)
Locations
ECU, APU, Electronics, Lead-Lag Dampers, Buffers, Interiors
Spherical and Journal Bearings, Engine
Mounts, Transmission Mounts
Frahm Dampers, Interiors
Transmission Mounts, Lead-Lag Dampers
Transmission, Fuselage
Tension-Torsion Straps, Fluid-Elastic Mounts
1. Life and inspection intervals based on general locations, use and conditions. Specific designs, uses and conditions may vary.
Performance
Designed, compounded and tuned to meet specific performance needs
Designed to meet specific performance goals while maximizing life in critical environments
Used to target specific frequency absorption
Linear or rotary mounts. High damping
Optimal performance by applying out of phase forces with variable inputs
Takes advantage of inherent properties from several technologies
Cost Low
Development Time
Low
Design Risk
Low Life and
Inspection Interval(1) Life: Medium - Long
Inspect: Infrequent or On-Condition
Medium - High
Low - Medium
Medium High
Medium – High
Medium - High Low Medium High Medium Low Medium High
Life: Flight hour dependent
Inspect: Frequent
Life: Long Inspect: On-Condition
Life: Flight hour dependent
Inspect: Frequent
Life: Medium Inspect: On-Condition
High High
Life: Flight hour dependent
Inspect: Infrequent - Frequent
REACTIVE
SOLUTIONS OFTEN LIMIT THE SPACE AVAILABLE FOR AN APPROPRIATE SOLUTION. THE CONSEQUENCES INCLUDE SHORTENED LIFE EXPECTANCY, INCREASING THE INTERVAL OF INSPECTIONS, MAINTENANCE AND REPAIR.
February | March 2016
HelicopterMaintenanceMagazine.com 17
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