vi   Design of 3D-Printed Titanium Compliant Mechanisms ........................................................................... 169  Ezekial Merriam, Jonathan Jones & Larry Howell   Magnetic Gearing versus Conventi onal Gearing in Actuators for Aerospace App lications ...................... 175  Gregor Puchhammer 

Flight Testing of a Low Cost De-orb iting Device for Sm all Satellites ........................................................ 183  Dana Turse, Phil Keller, Rober t Taylor, Mark Reavis, Mike Tupper & Chris Koehler 

Deployment Methods for an Origami-In spired Rigid-Fol dable Arra y ........................................................ 189  Shannon Zirbel, Brian Tr ease, Spencer Magleby & Larry Howell 

ROPEC – ROtary PErcussive Coring Drill for Mars Sample Return. ........................................................ 195  Philip Chu, Justin Spring & Kris Zacny   Aperture Valve for the Mars Organi c Molecule Analyze r (MOMA) ........................................................... 211  Charles Engler & John Canham 

Development of the RANCOR Rotary-Percussive Co ring System for Mars Sample Return .................... 217  Gabe Paulsen, Stephen Indyk & Kris Zacny   Torque Tension Testing of Fa steners used for NASA Flight Ha rdware Applic ations. .............................. 231  Ed Hemminger, Alan Pos ey & Michael Dube 

Ultrasonic Method for Deployment Mechanism Bolt Element Preload Verification .................................. 245  Eric Johnson, Yong Kim, Fred Morri s, Joel Mitchell & Robert Pan   LARES Mission: Separation and Retention Sub system ........................................................................... 259  Alessandro Bursi, Pierluigi Camilli, Claudio Pi redda, Gianni Babini & Elio Mangraviti 

Testing Orion’s Fairing Separation System ..................................................................................... ......... 273  Henry Martinez, Chris Cloutier,  Heber Lemmon, Daniel Rakes,  Joe Oldham & Keith Schlagel   Design and Lessons Learned on the Devel opment of a Pupil Select Mechani sm to be used in the Testing  and Calibration of the Integrated Science Instrument Module (I SIM) on the James Webb Space  Telescope (JWST) .............................................................................................................. ...................... 287  Alissa Mitchell, Thomas Capon, Jeffrey Guze k, Claef Hakun, Paul Haney & Corina Koca   GMI Instrument Spin Balance Method, Optimization, Calib ration and Tes t .............................................. 303  Laoucet Ayari, Michael Kubitschek, Gunnar As hton, Steve Johnston, Dave Debevec,   David Newell & Joseph Pellicciotti 

The European Robotic Arm: A High-Performance Mechanism Finally on it s Way to Space .................... 319  Henk Cruijssen, Marcel Ell enbroek, M. Henderson, H. Peters en, P. Verzijden & M. Visser 

GPM Solar Array Gravity Negat ed Deployment Testing ...........................................................................  335  Jonathan Penn, Chris Johnson, Jesse Lew is, Trevin Dear & Alphonso Stewart 

A Recommended New Approach on Motorization Rati o Calculations of Stepper Moto rs ........................ 349  Ruben Nalbandian, Thierry Blais & Richard Horth