vii Lessons Learned During the Development, Qualification, and Production of the MM Solar A rray......... 369  Thomas  Pace 

Solid -State Hinge Mechanism for Simple Panel Deployment System  .............................................. 383  Thomas Rose, William Hensley & William Francis  

Mars 2020 Motor Bearing Failure , Investigation and Response ...................................................... 397  Dave Suffern, Jeff Mobley  & Stephen Smith 

Mars 2020 m axon Commercial Motor Development from Commercial -Off-the-Shelf to Flight -Qualified  Motors, Gearbox es, and Detent  Brakes : Overcoming Issues and Lessons Learned ........................... 411  Michael LoSchiavo, Rebecca Mikhaylov , Robin Phillips  & Lynn Braunschweig 

Mars 2020 Center D ifferential Pivot Restraint : Flexurized Spring System Providing Compliance   for Rover  Mobility Deployment Prior to Landing  ........................................................................... 427   Matt Cameron & Kevin Liu 

Astrobee Free- Flyer Nozzle Mechanism  ..................................................................................... 441   Earl Daley  

Major Design Choices  and Challenges that Enabled the Success of the Ejectable Data   Recorder System  .................................................................................................................... 455   Jeff Hagen, Michael Burlone & Kristina Rojdev  

Design and Test of the Orion Crew Module Side Hatch .................................................................  469   Lance Lininger  & Kyle Gotthelf  

Design, Development, Testing, and Flight of the Crew Dragon Docking System  ............................... 483   Jaret Matthews, Caitlin Driscoll, Edward Fouad,  Andrew Welter, Marc Jamulowicz     & Jessica Ipnar  

Highlights of the Next Generation AIAA Moving Mechanical Assemblies S tandard  ............................ 495   Brian Gore & Leon Gurevich 

Micro-Vibration Attenuation Using Novel Flexible Pivot Design ....................................................... 503   Luc Blecha, Yoël Puyol , Simon Hayoz, Fabrice Rottmeier  & Martin Humphries  

Compliant Mechanisms Made by Additive Manufacturing  .............................................................. 517   Lionel Kiener , Hervé Saudan, Florent Cosandier, Gérald Perruchoud, Vaclav Pejchal,    Sébastien Lani  & Antoine Verhaeghe 

Flexible Waveguides for RF Transmission across PSP HGA Rotary Actuator  ................................... 529   Deva Ponnusamy , Weilun Cheng, Ted Hartka, Devin Hahne, Calvin Kee,    Mike Marley  & David Napolillo 

Thermal Vacuum  Testing Lessons Learned for Small Stepper Motors and a CubeSat Translation  Mechanism  ............................................................................................................................ 543   Alex Few, Lynn Albritton & Don McQueen 

Design and Development of the GPM Solar Array Drive Assembly,  Orbital Performance   and Lessons Learned  .............................................................................................................. 555   Alejandro Rivera,  Glenn Bock , Alphonso Stewart,  Jon Lawrence, Daniel Powers,    Gary Brown & Rodger Farley