Aircraft Horizontal Tail plane Case
Problem
- Model-test mismatch
- Inaccurate flutter and LCO predictions
Impact
- High test/model cost
- Lower performance
Root cause
The HTP includes interface connections that demonstrate strong nonlinear behavior. These complex connections contributed to test-model differences and hence to the flutter prediction limitations.
Solution
Proper identification of the nonlinear connection and creation of a nonlinear model allowed to properly represent the dynamics of the aircraft structure.
Benefits
Efficiency gain through fast and accurate test-model correlation.
Better confidence in flight envelope prediction leading to enlarged flight envelope.
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