Aircraft Wing Case
Problem
- Model-test mismatch
- Inability to certify
Impact
- High test/model cost
- Product launch delay
Root cause
The anti-ice system is composed of a tube through which a hot fluid circulates and allows to prevent ice formation on the wing leading edge. When cold, the tube shrinks creating some free-play with its support, leading to nonlinear vibrations.
Solution
Proper identification of the nonlinear connection and creation of a nonlinear model allowed to properly represent the dynamics of the structure.
Benefits
Model validation is achieved.
Product development can continue without further delay.
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