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10. Internationales Fluidtechnisches

8. - 10. März | 2016
in Dresden

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14:00   ics       Großer Saal

Jacking and Equalizing Cylinders for NASA- Crawler Transporter

First author:
Ingo Rühlicke, Walter Hunger GmbH & Co. KG, Germany

For the transport of their spacecraft from the vehicle assembly building to the launch
pads at Kennedy Space Centre, Florida, the National Aeronautics and Space
Administration (NASA) is using two special crawler transporters since 1965. First
developed for the Saturn V rocket the crawler transporters have been sufficient for all
following generations of space ships so far. But for the new generation of Orionspacecraft
which is under development now, a load capacity increase for the crawler
transporter of plus 50% was necessary. For this task Hunger Hydraulik did develop
new jacking, equalizing and levelling (JEL) cylinders with sufficient load capacity but
also with some new features to improve the availability, reliability and safety of this
system. After design approval and manufacture of the cylinders they have been tested
in a special developed one-to-one scale dynamic test rig and after passing this the
cylinders had to prove their performance in the crawler transporter itself. This article
describes the general application and introduces the technical requirements of this
project as well as the realized solution.