held at

NASA Lewis Research Center

May 18th, 19th an 20th, 1994

---

Hosted by the National Aeronautics and Space Administration

Sponsored by Lockheed Missiles & Space Company
and the Aerospace Mechanisms Symposium Committee

---

Table of Contents

• Symposium Objectives
• Symposium Location
• Symposium Activities
  • Early Registration
  • Welcoming Reception
  • Symposium Banquet
  • Lewis Facilities Tour
  • Guest Activities
  • Authors’ Meetings
• Symposium Information
  • Registration
  • Hotel Reservations
  • Transportation
  • Dr. George Herzl Award
• Symposium Itinerary
• Symposium Organizing and Advisory Committee

---

Symposium Objectives

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 both a social and technical forum for personnel active in the field of mechanisms technology, as well as providing a source of information for others with an interest in this field. The symposium rotates annually between eight NASA centers and attracts papers and attendees internationally.

---

Symposium Location

The Cleveland Marriott Society Center hotel will be the site for the technical sessions and several of the social activities. This new hotel is located on historic Public Square in the heart of downtown Cleveland. The Marriott is near shopping at the new Galleria and The Avenue at Tower City, and only minutes from cultural attractions at Playhouse Square, entertainment in the recently rejuvenated Flats, and professional sports at the brand new Gateway Stadium.

The telephone number for urgent messages to attendees during the symposium is (216) 696-9200 and refer to the Aerospace Mechanisms Symposium.

---

Symposium Activities

The technical and social activities planned will provide an opportunity for attendees not only to become professionally acquainted, but also to develop personal contacts.

---

Early Registration

On Tuesday evening, May 17 from 7:00-9:00 pm, a registration desk will be set up in the Ballroom Foyer of the Marriott Society Center Hotel to allow registration or check-in at this time, thus avoiding the line at the registration desk on Wednesday morning. A packet of symposium materials, which includes the symposium proceedings, will be available. A new computerized index of past published papers will also be available.

---

Welcoming Reception

On Wednesday evening, May 18, from 6:00 – 8:00 PM, an informal reception will be held in the Ballroom Foyer on the second floor of the Marriott Society Center Hotel. This reception is open to all attendees and guests. An hors d’oeuvres table and a no-host bar will be provided. Also, during this time, the poster-session papers will be on display.

---

Symposium Banquet

On Thursday, May 19, the principal social event of the symposium will be held at the Frederick C. Crawford Auto-Aviation Museum. Beginning at 6:30 pm, we will be free to tour through the museum’s impressive display of automobiles, aircraft, motorcycles and bicycles dating from 1892 to the present. This collection is one of the finest in the United States with over 200 motor cars and numerous vintage aircraft. While touring the museum, a no-host bar will be available. At 7:15 pm, dinner will be served. Following dinner until 10 pm, we will be treated to a discussion of the art and science of restoration from the museum’s chief restoration craftsman and be able to continue our private inspection of the museum’s unique collection. Bus transportation will be provided between the museum and the hotel.

---

Lewis Facilities Tour

On Friday afternoon, May 20, a special tour of NASA Lewis Test Facilities is planned. Unique facilities include the Zero-G, electric space propulsion, and tribology test areas. This tour is open to all attendees and guests. Buses will depart from the Marriott after lunch. After the tour, the buses will stop at the airport on the way back to the Marriott. Please indicate when registering if you and your guests will participate. Also note that non-USA citizens are required to pre-register.

---

Guest Activities

Cleveland sightseeing activities will be explained during a “Guest Orientation” held in the lobby of the Marriott hotel on Wednesday morning, May 18. Additional information concerning local sightseeing and tours will also be available at the time of registration. An organized Cleveland area tour will be arranged for Thursday if there is enough interest based on the reply card responses.

---

Authors’ Meetings

On the day of their presentation, at the time noted in the program schedule, presenting authors are requested to join their Session Chair at a special breakfast. This gathering will give the session participants an opportunity to meet one another and review the final session arrangements with their Session Chair. The Symposium Projectionist will also be available at this time to discuss presentation requirements.

---

Symposium Information

---

Registration

Advance registration is requested to facilitate planning. To pre-register, return the registration card or submit a letter indicating name, address, affiliation, and citizenship. Enclose the registration fee of $195 ($125 for students and educators). This fee covers all sessions, break refreshments, welcoming reception, symposium banquet, an specified bus transportation. Guest tickets for the symposium social events will be available at check-in.

Please be sure to note on the registration card your interest in the NASA Lewis Facilities Tour. Also indicate your guest’s interest in the NASA Tour, the social events, and Guests’ Program.

NOTE: Foreign nationals must register by April 15, 1994 to allow adequate processing time.

Checks should be made payable to the 28th Aerospace Mechanisms Symposium and should be submitted with the pre-registration card or letter to:

Ms. Peggy Heintz MS 4-1
NASA Lewis Research Center
21000 Brookpark Rd.
Cleveland, OH 44135
Tel: (216) 433-2895
FAX: (216) 433-8783

Please do not send purchase orders, foreign currency, or credit card charges.

Registration will also take place at the Cleveland Marriott Society Center on Tuesday evening, May 17, and each day of the symposium.

---

Hotel Reservations

A block of rooms has been set aside at the symposium hotel. A special single or double rate of $98 non-government and $78 government (this is equal to the lodging allowable for the area) has been arranged. Attendees are responsible for making their own reservations directly with the hotel. When making the reservation with the Cleveland Marriott Society Center hotel, attendees must mention the 28th Aerospace Mechanisms Symposium to obtain the special rate. Requests for reservations must be made by April 26, 1994 to ensure obtaining the symposium rate. After this date, the hotel will honor the special rate on a space-available basis only. The hotel will extend the special rate for the weekend after the symposium, if desired.

Cleveland Marriott Society Center
127 Public Square
Cleveland, OH 44114-1305
Tel: (216) 696-9200
FAX: (216) 696-8615

---

Transportation

The hotel is located in the center of downtown Cleveland, 10 miles northeast of the Cleveland Hopkins International Airport. Rental cars, taxi, limousine, and rapid transit service are available at the airport, requiring 20-30 minutes travel time to downtown. An underground parking garage is attached to the Marriott Society Center hotel, guest rate is $16 per night. Taxicab fare is $20-$25. The limousine is $16 per person (one-way); contact the limo service for schedule and arrangements. Rapid transit service, operated by the Greater Cleveland Regional Transit Authority (RTA), costs $1.50 each way (exact change only), and operates on the “Red Line” from 4:30 am to 9:30 pm on 12-minute intervals weekdays, and 17-minute intervals weekends. There is shuttle bus service between 9:30 pm and 1:00 am at 30-minute intervals. To use the rapid transit, take the escalator from the airport baggage claim area down to board, get off at the Tower City/Public Square stop, exit via escalators to Public Square. The Marriott is diagonally across the Square; entrance is via the Society Center Tower lobby or the hotel lobby one-half block north on West Mall Drive.

Yellow Cab: (216) 623-1500
Hopkins Limo: (216) 267-8282
RTA Information: (216) 621-9500

---

Dr. George Herzl Award

Each year a plaque is awarded to the author of the “Best Paper” presented at the symposium. The award is based on paper content, presentation delivery, and visual aids. This award was established in honor of Dr. George Herzl of Lockheed Missiles & Space Company, a co-founder of the Aerospace Mechanisms Symposia.

---

Symposium Itinerary

TUESDAY, 17 MAY 1994
7:00-9:00	EARLY REGISTRATION AND/OR CHECK-IN
WEDNESDAY, 18 MAY 1994
7:30	WEDNESDAY AUTHORS’ BREAKFAST (2nd floor conference room at Cleveland Marriott Society Center)
8:30	REGISTRATION AND REFRESHMENTS (Ballroom Foyer, Cleveland Marriott Society Center)
9:30	INTRODUCTORY REMARKS Mr. Douglas A. Rohn, Host Chairman NASA Lewis Research Center Mr. Stuart H. Loewenthal, General Chairman Lockheed Missiles & Space Co., Sunnyvale, CA CENTER WELCOME Dr. J. Stuart Fordyce, Deputy Director NASA Lewis Research Center, Cleveland OH
10:00	SESSION I – SOLAR ARRAY/POWER TRANSFER Mr. Fabio Fabbrizzi, Session Chair Officine Galileo, Florence, Italy Space Station Freedom Solar Array Containment Box Mechanisms Mark E. Johnson, Bert Haugen and Grant Anderson, Lockheed Missiles & Space Co., Sunnyvale, CA INSAT-2A and 2B Deployment Mechanisms M. N. Sathyanarayan, M. Nageswara Rao, B. S. Nataraju, N. Viswanatha, M. Laxmana Chary, K. S. Balan, V. Sridhara Murthy, Raju Aller and H. N. Suresha Kumar, ISRO Satellite Centre, Bangalore, India Roll Ring Assemblies for the Space Station J. Batista, J. Vise and K. Young, Honeywell Satellite Systems Operation, Phoenix, AZ International Space Station Alpha’s Bearing, Motor, and Roll Ring Module Development Testing and Results David L. O’Brien, Rocketdyne Div., Rockwell Intl, Canoga Park, CA
12:00	LUNCH
1:15	SESSION II – ROBOTICS/MASS PROPERTIES Mr. Savi S. Sachdev, Session Chair Spar Aerospace Ltd., Brampton, Canada Design, Characterization, and Control of the Unique Mobility Corporation Robot Virgilio B. Velasco, Jr. and Wyatt S. Newman, Case Western Reserve University, Cleveland, OH; Bruce Steinetz, NASA Lewis Research Center, Cleveland, OH; Carlo Kopf and John Malik, Unique Mobility, Inc., Golden, CO Development of an Interchangeable End Effector Mechanism for the Ranger Telerobotic Vehicle Robert Cohen and David Akin, University of Maryland, College Park, MD Diamond Turning in the Production of X-Ray Optics Steven C. Fawcett, NASA Marshall Space Flight Center, Huntsville, AL Innovative Mechanism for Mass Properties of an Object Kedron R. Wolcott, I-NET Inc., Kennedy Space Center, FL; Todd A. Graham, NASA Kennedy Space Center, FL; Keith L. Doty, University of Florida, Gainesville, FL
3:15	BREAK
3:30-5:00	SESSION III – POSTER PREVIEWS Dr. Larry Pinson, Session Chair NASA Lewis Research Center, Cleveland, OH Space Station Freedom Solar Array Tension Mechanism Development Curtis Allmon and Bert Haugen, Lockheed Missiles & Space Co., Sunnyvale, CA Leveraging Metal Matrix Composites to Reduce Costs in Space Mechanisms Ted Nye, Rex Claridge and Jim Walker, TRW Space and Electronics Group, Redondo Beach, CA Design, Development, and Testing of a Lightweight Optical Sensor Cover System Mike Hurley, Naval Research Lab, Washington D. C. and Scott Christiansen, Starsys Research Corp, Boulder, CO Energy Absorber for the CETA Clarence J. Wesselski, Lockheed Engineering and Sciences Co., Houston, TX Design, Characterization, and Control of the NASA Three Degree of Freedom Reaction Compensation Platform Craig Birkhimer and Wyatt Newmann, Case Western Reserve University, Cleveland, OH; Benjamin Choi and Charles Lawrence, NASA Lewis Research Center, Cleveland, OH Pip Pin Reliability and Design Lane P. Skyles, Lockheed Engineering and Sciences Co., Houston, TX Intelligent Control of a Multi-Degree-of-Freedom Reaction Compensating Platform System using Fuzzy Logic Benjamin B. Choi and Charles Lawrence, NASA Lewis Research Center, Cleveland, OH; Yueh-Jaw Lin, University of Akron, Akron, OH
6:00-8:00	WELCOMING RECEPTION (Ballroom Foyer, Cleveland Marriott Society Center)
THURSDAY, 19 MAY 1994
7:00	THURSDAY AUTHORS’ BREAKFAST (2nd floor conference room at Cleveland Marriott Society Center)
8:00	SESSION IV – ACTUATORS/POINTING Mr. William M. Logue, Session Chair Martin Marietta Astronautics Group, Denver, CO High Precision Moving Magnet Chopper for Variable Operation Conditions Winfried Aicher and Manfred Schmid, Dornier GmbH, Friedrichshafen, Germany Two Axis Antenna Positioning Mechanism Michelle Herald, Space Systems/Loral, Palo Alto, CA; Leilani C. Wai, INTELSAT, Palo Alto, CA Design and Performance of the Telescope and Detector Covers on the Extreme Ultraviolet Explorer Satellite James L. Tom, University of California, Berkeley, CA Pointing and Tracking Space Mechanism for Laser Communication A. Brunschvig and M. de Boisanger, Matra Marconi Space, Toulouse, France
10:00	BREAK
10:15	SESSION V – BEARINGS Mr. Roamer Predmore, Session Chair NASA Goddard Space Flight Center, Greenbelt, MD A Comparison of the Performance of Solid and Liquid Lubricants in Oscillating Spacecraft Ball Bearings Steve Gill, European Space Tribology Lab, Warrington, U.K. Development Of Long-Life, Low-Noise Linear Bearings For Atmospheric Interferometry E. W. Roberts, R. B. Watters and S. Gill, European Space Tribology Lab; Warrington, U.K. and R. Birner, G. Lange and W. Posselt, Deustche Aerospace AG, Ottobrun, Germany The Preliminary Evaluation of Liquid Lubricants for Space Applications by Vacuum Tribometry W. R. Jones, Jr., S. V. Pepper, R. Jansen, et al., NASA Lewis Research Center, OH; L. S. Helmick, Cedarville College, Cedarville, OH; M. Masuko, Tokyo Institute of Technology, Tokyo, Japan Design of a High-Speed Reliable Ball Bearing Herbert B. Singer and Erik Gelotte, The Charles Stark Draper Laboratory, Cambridge, MA
12:15	LUNCH
1:30	SESSION VI – BOOMS Ms. Sandee Paige, Session Chair The Aerospace Corp., El Segundo, CA MSAT Boom Joint Testing and Load Absorber Design David H. Klinker, Ken Shuey and Dennis R. St. Clair, Lockheed Missiles & Space Co., Sunnyvale, CA Special Test Equipment and Fixturing for MSAT Reflector Assembly Alignment Jeffrey A. Young, Michael R. Zinn and David R. McCarten, Lockheed Missiles & Space Co., Sunnyvale, CA Deployable/Retractable Telescoping Tubular Structure Development Mark Thompson, Astro Aerospace Corp., Carpinteria, CA
3:00	BREAK
3:15	SESSION VII – LESSONS LEARNED Dr. E. W. Roberts, Session Chair European Space Tribology Lab, AEA Technology, Warrington, U.K. Lessons Learned from Selecting and Testing Spaceflight Potentiometer Ted Iskenderian, Jet Propulsion Laboratory, Pasadena, CA The Galileo High Gain Antenna Deployment Anomaly Michael Johnson, Jet Propulsion Laboratory, Pasadena, CA
6:00-10:00	BANQUET AT CRAWFORD MUSEUM 6:00 Buses depart from Cleveland Marriott Society Center 6:30-7:15 Social Hour – Car/Airplane Collection 7:15 Dinner in Rotunda 8:30 The Art of Restoration, David Holcomb 10:00 Return to Cleveland Marriott Society Center
FRIDAY, 20 MAY 1994
7:00	FRIDAY AUTHORS’ BREAKFAST (2nd floor conference room at Cleveland Marriott Society Center)
8:00	SESSION VIII – RELEASE/DAMPER Dr. William Schneider, Session Chair NASA Johnson Space Center, Houston, TX Implementation of Heaters on Thermally Actuated Spacecraft Mechanisms John D. Busch and Michael D. Bokaie, TiNi Alloy Co. San Leandro, CA Payload Holddown Release Mechanism Dale Chaput, Mark Visconti, Michael Edwards and Tom Moran, G&H Technology, Inc., Camarillo, CA Advanced Release Technologies Program Bill Purdy, Naval Research Lab, Washington D.C. Load Limiting Landing Gear Footpad Energy Absorption System Chris Hansen and Ted Tsai, NASA Johnson Space Center, Houston, TX
10:00	BREAK
10:15	NASA LEWIS RESEARCH CENTER OVERVIEW David J. Poferl Director, Technical Services Directorate
10:45	PRESENTATION OF THE HERZL AWARD Al Rinaldo Lockheed Missiles & Space Co. (ret), Sunnyvale, CA CLOSING REMARKS Dr. Charles W. Coale, Organizational Chairman Lockheed Missiles & Space Co. (ret), Sunnyvale, CA
11:00	LUNCH AND CHECK-OUT
12:30	BUS LEAVES MARRIOTT FOR TOUR
1:00-3:00	NASA LEWIS FACILITY TOUR, THEN AIRPORT Zero-G, Electric Propulsion, Advanced Communications Technology Satellite, Tribology, and others. Stops may change, depending on facilities operations.

Douglas A. Rohn, Host Chairman, NASA LeRC

---

Symposium Organizing Committee

Stuart H. Loewenthal Edward A. Boesiger Charles W. Coale

General Chairman LMSC Operations Chairman LMSC Organizational Chairman LMSC (ret)

Obie H. Bradley, Jr Michael Eiden David F. Engelbert Claef Hakem John E. Harbison Alan C. Littlefield Edward C. Litty Ronald E. Mancini Stewart C. Meyers John W. Redmon, Sr. John F. Rogers William C. Schneider Donald R. Sevilla Sterling W. Walker Bowden W. Ward, Jr.

NASA LaRC ESA/ESTeC NASA ARC NASA GSFC NASA MSFC NASA KSC JPL NASA ARC NASA GSFC NASA MSFC NASA LaRC NASA JSC JPL KSC NASA GSFC

Symposium Advisory Committee

Paul W. Bomke Aleck C. Bond Thomas F. Bonner H. Mervyn Briscoe Kenneth C. Curry Otto H. Fedor Harvey H. Horiuchi Frank T. Martin Alfred L. Rinaldo Nathan D. Watson	JPL NASA JSC (ret) Space Industries ESTeC (ret) JPL(ret) LSOC (ret) JPL NASA GSFC (ret) LMSC (ret) NASA LaRC (ret)
Edward A. Wegner, LMSC (ret), Publicity Coordinator