AMSAT-NAMore Phase 3D Photos


The photos were taken by AMSAT Executive Vice President Keith Baker, KB1SF (kb1sf@amsat.org) and AMSAT Vice President, Engineering Dick Jansson, WD4FAB (wd4fab@amsat.org). Select the small image to see a full-size .JPG image (about 50K).


[ Photo ]

AMSAT Phase 3D Integration Laboratory Manager Lou McFadin, W5DID (R), and Stan Wood, WA4NFY, AMSAT Assistant VP, Engineering, perform continuity tests on the Phase 3D power wiring harness at the P3D lab in Orlando, Florida. (mid-October 1996)



[ Photo ]

Lou McFadin, W5DID, points out the VHF/UHF antenna relays on the satellite at the P3D lab. The high power, space-rated relays were provided by Dow-Key Corporation and will switch receivers and transmitters between high gain and omnidirectional VHF/UHF antennas on the spacecraft. The 2m transmitter position is located just below Lou's hand. (mid-October 1996)



[ Photo ]

This superbly constructed spin-balance machine in the P3D lab is the result of over a year of painstaking work by Ralf Zimmermann, DL1FDT, and Bernd Ludewig, DH5IAE, as part of their master's degree thesis requirements at the University of Darmstadt in Germany. The apparatus will be used to ensure that the full-up mass of Phase 3D is evenly distributed inside the spacecraft prior to final integration and shipment for launch. Phase 3D will spin in space until initial checkout of spacecraft systems is accomplished and its solar panels are deployed.


[ Photo ]

The Phase 3D battery mounting and integration effort nears completion at the P3D lab. (mid-October 1996)



[ Photo ]

AMSAT-DL's Konrad Mueller, DG7FDQ, adds water to one of the "propellant tanks" of the Phase 3D engineering model just prior to the first spacecraft dynamic tests of an AMSAT P3D spaceframe and launch structure while mated with an Ariane 5 test stand at Aerospatiale's facilities in Les Mureaux, France. For these tests, Konrad expertly mounted plastic water jugs into the engineering model of the Phase 3D spaceframe (built in Germany in 1993) to simulate propellant tanks. He also added wood blocks in the equipment bays to simulate electronic modules. The test were done to investigate how well the P3D spacecraft and carrying structures will perform during the rigorous dynamic environment of launch. Preliminary indications were that the P3D spaceframe and carrying structure passed with "flying colors".



[ Photo ]

Recent dynamic tests in Les Mureaux, France used the flight model Specific Bearing Structure (SBS) that will carry Phase 3D on the upper stage of the Ariane 5 during launch along with a simulated fully fueled P3D spacecraft. Testing was accomplished by searching for unknown or undamped resonances in the hardware that could tear the P3D spacecraft or the SBS apart during the vibrations of launch. Measured dynamic performance of the SBS and spaceframe are well within European Space Agency guidelines.



[ Photo ]

One string of a four-part flight auxiliary battery is shown mounted within the Phase 3D spacecraft. The battery is a perfect example of the cooperative international nature of the project. The individual battery cells were provided by AMSAT-DL. Testing and grouping of cells into a flight-rated battery was the work of Surrey Satellite Technology, Ltd. at the University of Surrey, England with the help and support of AMSAT-UK. Base plates were fabricated in New Zealand by Fred Kennedy, ZL1BYP, based on designs by Jeff Zerr at the Orlando P3D integration lab. Fabrication of additional mounting hardware as well as final integration of the battery into the satellite was accomplished by Mike Bethel in the P3D lab.



[ Photo ]

Phase 3D integration laboratory worker Mike Bethel carefully mounts ground-test main batteries into the spacecraft at the P3D lab. (mid-October 1996)



Updated 10 January 1997. Feedback to KB5MU.

AMSAT Top