Intro
Preface
Contents
1 Orion MPCV E-STA Nonlinear Dynamics Uncertainty Factors
1.1 Introduction
1.2 Analysis
1.3 Conclusion
References
2 The Vibration and Acoustic Effects of Prop Design and Unbalance on Small Unmanned Aircraft
2.1 Introduction
2.2 Experimental Testing
2.3 Vibration Testing
2.4 Acoustic Testing
2.5 Conclusions
References
3 A Deformed Geometry Synthesis Technique for Determining Stacking and Cryogenically Induced Preloads for the Space Launch System
3.1 Introduction
3.2 DGS Verification Problems

3.2.1 Verification Problem #1: Ball Jointed Strut Problem
Preloads (Linear Case)
3.2.2 Verification Problem #2: Ball Jointed Strut Problem
Preloads (Nonlinear Case)
3.3 Application to the SLS System
3.4 DGS of Vehicle Stabilizer System (VSS) to the SLS
3.5 DGS of ML Extensible Columns (EC)
3.6 Liftoff Pad Separation Twang
Release of Preloads
3.7 Conclusion
References
4 End-to-End Assessment of Artemis-1 Development Flight Instrumentation
4.1 Introduction
4.2 Background
4.2.1 Investigation
4.3 Conclusion

5 Space Launch System Mobile Launcher Modal Pretest Analysis
5.1 Background
5.2 Verifying Validity of Results
5.3 Residual Vectors and Accounting for Compliance Contribution of Out-of-Band Modes
5.4 Target Mode Selection
5.5 Test DOF Selection
5.6 ML Shakers
5.7 Drop Hammer Forces
5.8 ML Shaker and Drop Hammer Suitability Study
5.9 Accelerometer Sensor Noise
5.10 Ambient Background Noise (Not Including Accelerometer and Data Acquisition Sensor/Signal Noise)
5.11 Force Response Analysis Theory and Implementation
5.12 Conclusions
References

6 Feasibility Study to Extract Artemis-1 Fixed Base Modes While Mounted on a Dynamically Active Mobile Launch Platform
Acronyms
6.1 Introduction and Background
6.2 Analysis Model
6.3 Analysis Strategy
6.4 Results
6.5 Technology Readiness Level
6.6 Summary
References
7 Challenges to Develop and Design Ultra-high Temperature Piezoelectric Accelerometers
7.1 Introduction
7.2 Experimental Procedure
7.3 Results and Discussion
7.4 Challenges
7.5 Conclusion
References
8 Application of Quasi-Static Modal Analysis to an Orion Multi-Purpose Crew Vehicle Test

8.1 Introduction
8.2 Background
8.3 Sdof System with Bouc-Wen Joint Model
8.4 QSMA Implementation
8.5 Results and Comparisons
8.6 Conclusion
References
9 Using BB-gun or Acoustic Excitation to Find High Frequency Modes in Additively Manufactured Parts
9.1 Introduction
9.2 Background
9.2.1 Acoustic Testing
9.2.2 BB-gun Testing
9.3 Methods
9.3.1 Acoustic Testing
9.3.2 BB-gun Testing
9.4 Results
9.4.1 Acoustic Testing
9.4.2 BB-gun Testing
9.5 Conclusion
References