A new sliding joint to accommodate recoil of a free-piston-driven expansion tube facility

Gildfind, D.E. and Morgan, Richard G. (2015) A new sliding joint to accommodate recoil of a free-piston-driven expansion tube facility. Shock Waves Journal, 1-9. doi:10.1007/s00193-015-0609-9

Author Gildfind, D.E.
Morgan, Richard G.
Title A new sliding joint to accommodate recoil of a free-piston-driven expansion tube facility
Journal name Shock Waves Journal   Check publisher's open access policy
ISSN 1432-2153
Publication date 2015-12-29
Year available 2015
Sub-type Article (original research)
DOI 10.1007/s00193-015-0609-9
Open Access Status Not yet assessed
Start page 1
End page 9
Total pages 9
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2016
Language eng
Abstract This paper describes a new device to decouple free-piston driver recoil and its associated mechanical vibration from the acceleration tube and test section of The University of Queensland’s X3 expansion tube. A sliding joint is introduced to the acceleration tube which axially decouples the facility at this station. When the facility is fired, the upstream section of the facility, which includes the free-piston driver, can recoil upstream freely. The downstream acceleration tube remains stationary. This arrangement provides two important benefits. Firstly, it eliminates nozzle movement relative to the test section before and during the experiment. This has benefits in terms of experimental setup and alignment. Secondly, it prevents transmission of mechanical disturbances from the free-piston driver to the acceleration tube, thereby eliminating mechanically-induced transducer noise in the sensitive pressure transducers installed in this low-pressure tube. This paper details the new design, and presents experimental confirmation of its performance.
Keyword Recoil
Free-piston driver
Impulse facility
Expansion tube
Mechanical vibration
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes This is a journal article under the same name as the conference paper I submitted to espace, but they are not the same document.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
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Created: Sun, 03 Jan 2016, 20:54:21 EST by Mr David Gildfind on behalf of School of Mechanical and Mining Engineering