Spacecraft Launcher Nozzle


  1. Model/test mismatch


  1. High test/model cost
  2. Lower performance
  3. High operation cost

Root cause

The nozzle was made of 2 main pieces joined by a combination of bolts and elastomeric joints. This complex connection was a source of nonlinearity which contributed to test-model differences.


Proper identification of the nonlinear connection and creation of a nonlinear model allowed to properly represent the dynamics of the spacecraft structure.


Efficiency gain.

Lower launch cost through safety margin and weight reduction.

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Smallsat Case

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