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Shock Waves

pp 1–27 | Cite as

Use of acceleration and optical waypoint measurements to estimate piston trajectory in an impulse facility

  • D. E. Gildfind
  • T. Hines
  • P. A. Jacobs
  • S. Stennett
  • I. Dimitrijevic
Original Article
  • 29 Downloads

Abstract

This paper describes a prototype device to estimate the trajectory of the piston in a free-piston driver. The device, which screws to the front face of the piston, has an internal data acquisition system which triggers upon piston launch and records the acceleration history across the complete piston stroke. A key feature is the incorporation of an optical waypoint detector. This comprises a laser which is directed onto the compression tube wall, and a photodiode which measures the reflected intensity. A series of evenly spaced high-contrast lines are marked on the tube surface, which appear as a pattern of intensity changes in the photodiode signal and define a set of exact position–time coordinates along the trajectory. Optical pattern recognition has previously been shown to be effective to identify piston traversal past a fixed detector; in this application, the order is reversed so that the detector is on the piston, and the pattern is at the fixed location. Waypoint detection permits computation of a precise in situ calibration of the accelerometer and correction of the acceleration integration along the piston stroke. The key benefits of this concept are that it provides a complete, fully time-resolved, accurate estimate of piston position, is self-contained and portable, and can be readily utilised on any free-piston driver without significant modification to the facility.

Keywords

Free-piston driver Piston dynamics Trajectory measurement Accelerometer Optical waypoint detection 

Notes

Acknowledgements

The authors wish to thank UQ’s Faculty of Engineering, Architecture, and Information Technology (EAIT) for support and funding through its New Staff Research Start-up Funding scheme; UQ’s EAIT Faculty Workshop, especially Frans de Beurs and Mark James, for technical support; Paul Meehan for suggesting calibration by drop testing; the Australian Research Council for support and funding; and the Queensland Smart State Research Facilities Fund 2005 for support and funding.

References

  1. 1.
    Stalker, R.J.: Isentropic compression of shock tube driver gas. ARS J. 30, 564 (1960)Google Scholar
  2. 2.
    Stalker, R.J.: A study of the free-piston shock tunnel. AIAA J. 5(12), 2160–2165 (1967).  https://doi.org/10.2514/3.4402 CrossRefGoogle Scholar
  3. 3.
    Hornung, H.G.: The Piston Motion in a Free-piston Driver for Shock Tubes and Tunnels. GALCIT Report FM 88-1, Graduate Aeronautical Laboratories, California Institute of Technology (1988)Google Scholar
  4. 4.
    Itoh, K., Ueda, S., Komuro, T., Sato, K., Takahashi, M., Myajima, H., Tanno, H., Muramoto, H.: Improvement of a free piston driver for a high-enthalpy shock tunnel. Shock Waves 8, 215–233 (1998).  https://doi.org/10.1007/s001930050115 CrossRefGoogle Scholar
  5. 5.
    Gildfind, D.E., James, C.M., Morgan, R.G.: Free-piston driver performance characterisation using experimental shock speeds through helium. Shock Waves 25(2), 169–176 (2015).  https://doi.org/10.1007/s00193-015-0553-8 CrossRefGoogle Scholar
  6. 6.
    Gildfind, D.E., Morgan, R.G., McGilvray, M., Jacobs, P.A., Stalker, R.J., Eichmann, T.N.: Free-piston driver optimisation for simulation of high Mach number scramjet flow conditions. Shock Waves 21(6), 559–572 (2011).  https://doi.org/10.1007/s00193-011-0336-9 CrossRefGoogle Scholar
  7. 7.
    Gildfind, D.E.: Development of High Total Pressure Scramjet Flow Conditions Using the X2 Expansion Tube. PhD thesis, Division of Mechanical Engineering, School of Engineering, The University of Queensland (2012)Google Scholar
  8. 8.
    Gildfind, D.E., Jacobs, P.A., Morgan, R.G., Chan, W.Y.C., Gollan, R.J.: Scramjet test flow reconstruction for a large-scale expansion tube, Part 1: quasi-one-dimensional modelling. Shock Waves 28(4), 877–897 (2017).  https://doi.org/10.1007/s00193-017-0785-x CrossRefGoogle Scholar
  9. 9.
    Gildfind, D.E., Jacobs, P.A., Morgan, R.G., Chan, W.Y.C., Gollan, R.J.: Scramjet test flow reconstruction for a large-scale expansion tube, Part 2: axisymmetric CFD analysis. Shock Waves 28(4), 899–918 (2017).  https://doi.org/10.1007/s00193-017-0786-9 CrossRefGoogle Scholar
  10. 10.
    Itoh, K., Komuro, T., Sato, K., Ueda, S., Tanno, H., Takahashi, M.: Characteristics of free-piston shock tunnel HIEST (1st report, tuned operation of free-piston driver). Trans. Jpn. Soc. Mech. Eng. Ser. B 68(675), 2968–2975 (2002).  https://doi.org/10.1299/kikaib.68.2968 CrossRefGoogle Scholar
  11. 11.
    Tanno, H., Itoh, K., Komuro, T., Sato, K.: Experimental study on the tuned operation of a free piston driver. Shock Waves 10(1), 1–7 (2000).  https://doi.org/10.1007/s001930050174 CrossRefGoogle Scholar
  12. 12.
    Martinez Schramm, J.: Personal communication, 13 September 2008Google Scholar
  13. 13.
    Collinson, R.P.G.: Introduction to Avionic Systems, 3rd Edn. Springer, Dordrecht (2011).  https://doi.org/10.1007/978-94-007-0708-5
  14. 14.
    Measurement Specialties: Model 64 accelerometer (2013). Filename ‘ENG\_DS\_64\_Accelerometer\_A.pdf’, downloaded from: http://www.te.com. Accessed 13 Aug 2018
  15. 15.
    Parekh, V., Gildfind, D., Lewis, S., James, C.M.: X3 expansion tube driver gas spectroscopy and temperature measurements. Shock Waves 28(4), 851–862 (2017).  https://doi.org/10.1007/s00193-017-0754-4 CrossRefGoogle Scholar
  16. 16.
    Hines, T.: X3 Piston Accelerometer Package. Engineering Honours Thesis, School of Information Technology and Electrical Engineering, The University of Queensland, St Lucia (2016)Google Scholar
  17. 17.
    Jacobs, P., Dimitrijevic, I.: An Embeddable Data Acquisition System—Interim Report. Mechanical Engineering Technical Report 2014/04, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane (2015)Google Scholar
  18. 18.
    UL: Safety Issues for Lithium-ion Batteries, 2015. Downloaded from: http://newscience.ul.com/wp-content/uploads/2014/04/Safety_Issues_for_Lithium_Ion_Batteries1.pdf. Accessed 31 Oct 2016
  19. 19.
    UL: BBCV2.MH12383—Lithium Batteries—Component—SANYO ENERGY (USA) CORP (2016). Downloaded from http://database.ul.com. Accessed 31 Oct 2016
  20. 20.
    Berman, M.S.: Electronic Components for High-g Hardened Packaging. Technical report ARL-TR-3705, Army Research Laboratory, Aberdeen Proving Ground, MD (2006)Google Scholar
  21. 21.
    Stennett, S.J., Gildfind, D.E., Jacobs, P.A., Morgan, R.G.: Performance optimization of X3R: A new reflected shock tunnel mode for the X3 expansion tube. 2018 Aerodynamic Measurement Technology and Ground Testing Conference, Atlanta, GA, June 25–29, AIAA Paper 2018-3563 (2018).  https://doi.org/10.2514/6.2018-3563
  22. 22.
    Photron USA, Inc.: Specification Sheet for FASTCAM Mini UX100 Compact High-Speed Camera System. ‘FASTCAM\_MINI\_UX100.pdf’, downloaded from: https://photron.com. Accessed 13 Sept 2018
  23. 23.
    PCB Piezotronics, Inc.: Specification sheet for PCB\(^{{{\textregistered }}}\) 352A60 ICP\(^{{{\textregistered }}}\) accelerometer, Spec Number 20490, 9-30-08. Downloaded from: https://www.pcb.com/products.aspx?m=352A60. Accessed 18 July 2018
  24. 24.
    PCB Piezotronics, Inc.: Signal Conditioning Basics for ICP\(^{{{\textregistered }}}\) & Charge Output Sensors. Downloaded from: http://www.pcb.com. Accessed 18 July 2018
  25. 25.
    Lagarias, J.C., Reeds, J.A., Wright, M.H., Wright, P.E.: Convergence properties of the Nelder–Mead simplex method in low dimensions. SIAM J. Optim. 9(1), 112–147 (1998).  https://doi.org/10.1137/S1052623496303470 MathSciNetCrossRefzbMATHGoogle Scholar
  26. 26.
    Goffe, W.L.: SIMANN: a global optimization algorithm using simulated annealing. Stud. Nonlinear Dyn. Econom. 1(3), 169–176 (1996).  https://doi.org/10.2202/1558-3708.1020 MathSciNetCrossRefzbMATHGoogle Scholar
  27. 27.
    Jacobs, P.A.: Quasi-one-dimensional modeling of a free-piston shock tunnel. AIAA J. 32(1), 137–145 (1994).  https://doi.org/10.2514/3.11961 CrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.The University of QueenslandSt. LuciaAustralia
  2. 2.CB AerospaceHemmantAustralia
  3. 3.UNSW Canberra at ADFACanberraAustralia

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