45th AEROSPACE MECHANISMS SYMPOSIUM                        


Hosted by NASA Johnson Space Center and Lockheed Martin Space

Organized by the Mechanisms Education Association


This symposium is concerned with the problems of design, fabrication, test, and operational use of aerospace mechanisms. Emphasis is on hardware developments. The symposium provides a social and technical forum for personnel active in the field of mechanisms technology, as well as providing a source of information for others interested in this field. The symposium rotates among eight NASA Centers and attracts papers and attendees from all over the world.



– Nanometric Positioning with IASI-NG‘s Beam Splitter Mechanism Actuator

Francois Barillot, Jocelyn Rebufa, Gladys Jaussaud & Adrien Guignabert, Cedrat Technologies, Meylan, France

– Spectrometer Scan Mechanism for Encountering Jovian Orbit Trojan Asteroids

Kenneth Blumenstock, Alexander Cramer, Joseph Church, Jason Niemeyer, Fil Parong, Sam Zhao & Nerses Armani, NASA Goddard Space Flight Center, Greenbelt, MD; Kenneth Lee, ATA Aerospace, Greenbelt, MD

– Point Ahead Mechanism for Deep Space Optical Communication – Development of a New Piezo-Based Fine Steering Mirror

Adrian Guignabert, Thomas Maillard, Francois Barillot, Olivier Sosnicki & Frank Claeyssen, Cedrat Technologies, Meylan, France;

– Design, Development and Verification of the METimage Mechanisms

Sebastian Rieger & Armin Jago, Airbus Defense & Space, Friedrechshafen, Germany

– Challenges of the Development of a Compliant Focus Mechanism Submitted to the Harsh Martian Environment for the ExoMars Rover Mission

Antoine Verhaeghe, Gerald Perruchoud, Philippe Schwab, Mathias Gumy, Julien Rouvinet & Lionel Kiener, Centre Suisse d’Electronique et de Microtechnique S.A., Neuchâtel, Switzerland


– Lessons Learned from Qualification of HDRM for Ultralight LP-PWI Boom for ESA JUICE Mission

Maciej Borys, Ewelina Ryszawa, Łukasz Wiśniewski, Maciej Ossowski & Jerzy Grygorczuk, Astronika Sp.Z.o.o, Warsaw, Poland

– Development of a Family of Resettable Hold-Down and Release Actuators based on SMA Technology and Qualification of Different Application Systems

Marcelo Collado Martinez, Cayetano Rivera & Javier Inés, Arquimea Ingenieria, S.L., Madrid, Spain; José San Juan, University of the Basque Country, Leioa, Spain; Charlie Yeates & Michael Anderson, ESR Technology Ltd, Warrington, UK; Francisco Javier Rivas, Airbus Defence and Space, Madrid, Spain; Mónica Iriarte, AVS, Elgoibar, Spain; Jens Steppan, SpaceTech GMBH, Immenstaad, Germany; Calem Whiting & Karine Murray, Surrey Satellite Technology Limited, Guildford, UK

– Development and Post-Testing Anomalies of the Parker Solar Probe Clamshells Development

Mark Bryant, Johns Hopkins University Applied Physics Laboratory, Laurel, MD


– Mars 2020 Rover Adaptive Caching Assembly: So Many Challenges

Milo Silverman & Justin Lin, Jet Propulsion Laboratory, Pasadena, CA

– Sealing Station Mechanisms for the Mars 2020 Rover Sample Caching Subsystem

Jesse Grimes-York & Sean O’Brien, Jet Propulsion Laboratory, Pasadena, CA

– Design and Development of a Robust Chuck Mechanism for the Mars 2020 Coring Drill

Anthony Barletta, Jet Propulsion Laboratory, Pasadena, CA

– Percussion Mechanism for the Mars 2020 Coring Drill

Kyle Chrystal, Jet Propulsion Laboratory, Pasadena, CA

– STIG: A Two-Speed Transmission Aboard the Mars 2020 Coring Drill

Timothy Szwarc, Jet Propulsion Laboratory, Pasadena, CA;

Jonathan Parker, Sierra Nevada Corp, Durham, NC;

Johannes Kreuser, CEROBEAR GmbH, Herzogenrath, Germany


– Development of the Next Generation Battery Cell Isolation Switch

Ruben Betancourt & Michel Knight, Ensign-Bickford – NEA Electronics Inc., Moorpark, CA

– A Fast-Acting Self-Energized, Low-Cost Valve for Air Cannons

Lee Brown, Electronics Development Corporation, Columbia, MD

– Development of a Low-Shock Separation Nut Out of the Pyrotechnic Class

Sebastien Perez, Frederic Miralles & François Degryse, Pyroalliance, Les Mureaux, France

– Lubricant Degradation in High-Load, High-Cycle Actuator Test Using Heritage Harmonic Drives for the Multi-Angle Imager for Aerosols Instrument

Michelle Easter, Jet Propulsion Laboratory, Pasadena, CA

– Multi-Mission Deployable Boom: Spring Mechanism Design, Failure Investigation, and Resolution

Christine Gebara & Paul Lytal, Jet Propulsion Laboratory, Pasadena, CA

– NSI Performance Improvement Through the use of Automation

Jason Kozmic, Bill Gratzl & Hobin Lee, Chemring Energetic Devices, Downers Grove, IL

– Microvibrations Modelling and Measurement on Sentinel 4 UVN Calibration Assembly using a Piezoelectric 6 Component Force Dynamometer

Benoit Marquet, Université de Liège, Centre Spatial de Liège, Angleur, Belgium

– Lubrication Concept Evaluated for Geared Actuators under Starved Conditions

Erik Nyberg & Ichiro Minami, Luleå Tekniska Universitet, Luleå, Sweden; Jonny Hansen, Scania CV AB, Södertälje, Sweden

– Development of a Universal and Scaleable Mechanism Control Electronics Configured to Application Solely by Parameter and Software Configuration

Udo Rapp & Juan Camilo Garcia Hernandez, Airbus Defence & Space, Friedrichshafen, Germany

– Eddy Current Effects in Spacecraft Mechanisms

Emilia Wegrzyn, Surrey Space Centre, Guildford, United Kingdom; Claudia Allegranza, ATG Europe, Noordwijk, The Netherlands; Thomas Adam, Florian Liebold & René Seiler, ESA/ESTeC, Noordwijk, The Netherlands

SESSION V – Bearings & Tribology

– Recovery and Operational Best Practices for Reaction Wheel Bearings

Michael Dube, NASA Langley Research Center, Hampton, VA; Jeff Fisher, Fisher Aerospace, Sunnyvale, CA; Stuart Loewenthal, Lockheed Martin Space (retired), Sunnyvale, CA; Peter Ward, The Aerospace Corporation, El Segundo, CA

– Laboratory Studies of Spacecraft Fluid Lubricant Mobility and Film Thickness

Peter Frantz James Helt & Steve Didziulis, The Aerospace Corporation, El Segundo, CA

– Efficacy of Lead Naphthenate for Wear Protection in High Vacuum Space Mechanisms

Jason Galary, NYE Lubricants, Inc., Fairhaven, MA

– Bearing Anomaly for the Sentinel 6 Supplemental Calibration System

Gale Paulsen, Dylan Van Dyne, Fredrik Rehnmark & Phil Chu, Honeybee Robotics Spacecraft Mechanisms Corporation, Altadena, CA; Ted Iskenderian, Jet Propulsion Laboratory, Pasadena, CA


– Parker Solar Probe MAG Boom Design, Analysis and Verification

Weilun Cheng, Calvin Kee & John Wirzburger, Johns Hopkins University Applied Physics Laboratory, Laurel, MD

– Development of a Low-Shock Payload Fairing Jettison System

Boris Halter, Josef Zemann, Simon Wieser, Beatrice Burkhart, Mathias Burkhalter, Alberto Sánchez & Oliver Kunz, RUAG Space Switzerland, Zurich, Switzerland

– Deployment Mechanism for an Earth Re-Entry Deployable Decelerator

Carl Kruger, NASA Ames Research Center, Moffett Field, CA

– Lessons Learned During the Development, Qualification, and Production of the MM Solar Array

Thomas Pace, Lockheed Martin Space, Sunnyvale, CA

– Solid-State Hinge Mechanism for Simple Panel Deployment System

Thomas Rose, William Hensley & William Francis, Roccor, Longmont, CO


– Mars 2020 Motor Bearing Failure, Investigation and Response

Dave Suffern, Jeff Mobley & Stephen Smith, Sierra Nevada Corporation, Durham, NC

– Mars 2020 maxon Commercial Motor Development from Commercial-Off-the-Shelf to Flight-Qualified Motors, Gearboxes, and Detent Brakes: Overcoming Issues and Lessons Learned

Michael LoSchiavo & Rebecca Mikhaylov, Jet Propulsion Laboratory, Pasadena, CA; Robin Phillips & Lynn Braunschweig, maxon motor ag, Sachseln, Switzerland

– Mars 2020 Center Differential Pivot Restraint: Flexurized Spring System Providing Compliance for Rover Mobility Deployment Prior to Landing

Matt Cameron & Kevin Liu, Jet Propulsion Laboratory, Pasadena, CA


– Astrobee Free-Flyer Nozzle Mechanism

Earl Daley, NASA Ames Research Center, Mountain View, CA

– Major Design Choices and Challenges that Enabled the Success of the Ejectable Data Recorder System

Jeff Hagen, Michael Burlone & Kristina Rojdev, NASA Johnson Space Center, Houston, TX

– Design and Test of the Orion Crew Module Side Hatch

Lance Lininger, Lockheed Martin Space, Denver, CO; Kyle Gotthelf, Honeybee Robotics, Longmont, CO

– Design, Development, Testing, and Flight of the Crew Dragon Docking System

Jaret Matthews, Caitlin Driscoll, Edward Fouad & Andrew Welter, SpaceX, Hawthorne, CA; Marc Jamulowicz & Jessica Ipnar, Dynamic Concepts, Inc., Huntsville, AL

– Highlights of the Next Generation AIAA Moving Mechanical Assemblies Standard

Brian Gore & Leon Gurevich, The Aerospace Corporation, El Segundo, CA


– Micro-Vibration Attenuation Using Novel Flexible Pivot Design

Luc Blecha, Yoël Puyol, Simon Hayoz & Fabrice Rottmeier, Almatech SA, Lausanne, Switzerland; Martin Humphries, SpaceMech Ltd., Bristol, UK

– Compliant Mechanisms Made by Additive Manufacturing

Lionel Kiener, Hervé Saudan, Florent Cosandier, Gérald Perruchoud, Vaclav Pejchal, Sébastien Lani & Antoine Verhaeghe, Centre Suisse d’Electronique et de Microtechnique S.A., Neuchâtel, Switzerland

– Flexible Waveguides for RF Transmission across PSP HGA Rotary Actuator

Deva Ponnusamy, Weilun Cheng, Ted Hartka, Devin Hahne, Calvin Kee, Mike Marley & David Napolillo, Johns Hopkins University Applied Physics Laboratory, Laurel, MD


– Thermal Vacuum Testing Lessons Learned for Small Stepper Motors and a CubeSat Translation Mechanism

Alex Few, Lynn Albritton & Don McQueen, NASA Marshall Space Flight Center, Huntsville, AL

– Design and Development of the GPM Solar Array Drive Assembly, Orbital Performance and Lessons Learned

Alejandro Rivera & Glenn Bock, KBR Inc. – Space Engineering Division, Greenbelt, MD; Alphonso Stewart, Jon Lawrence, Daniel Powers, Gary Brown & Rodger Farley, NASA Goddard Space Flight Center, Greenbelt, MD

– Two-Axis Antenna Pointing Mechanism Qualification for Juice Mission Dual-Band Medium Gain Antenna

Jorge Vázquez, Mikel Prieto, Jon Laguna & Antonio Gonzalez, Sener Aeroespacial, Gexto, Spain


Host Chair – Brandan Robertson, NASA JSC

General Chairman – Edward A. Boesiger, Lockheed Martin Space

Deputy Chairman – Stuart H. Loewenthal, Lockheed Martin Space (retired)

William Caldwell, NASA ARC

Damon C. Delap, NASA GRC

Jared A. Dervan, NASA MSFC

Adam G. Dokos, NASA KSC

Michael J. Dube, NASA NESC

Carlton L. Foster, NASA MSFC (retired)

Lionel Gaillard, ESA/ESTeC

Claef F. Hakun, NASA GSFC

Christopher P. Hansen, NASA JSC

Louise Jandura, JPL

Alan C. Littlefield, NASA KSC (retired)

Ronald E. Mancini, NASA ARC (retired)

Fred G. Martwick, NASA ARC

Donald H. McQueen, Jr., NASA MSFC

Robert P. Mueller, NASA KSC

Benjamin J. Nickless, NASA LaRC

Joseph W. Pellicciotti, NASA HQ

Minh Phan, NASA GSFC

Joseph P. Schepis, NASA GSFC

Donald R. Sevilla, JPL

James E. Wells, NASA LaRC

Jonathan P. Wood, Lockheed Martin Space