Experimental Investigations of a Free-Vortex Aerodynamic Window

  • E. Wildermuth
  • A. Giesen
  • H. Hügel
Part of the Springer Proceedings in Physics book series (SPPHY, volume 15)


One of the critical components of high-power lasers is the output coupling element. If output power exceeds a certain limit, it can become necessary to replace the solid window by another conception. In the experiment to be discussed in this contribution, an aerodynamic window has been chosen that uses a curved supersonic Jet to seal the low-pressure region of a simulated laser-cavity (100 mbar) against the ambient environment. A short description will be given of the principle, numerical calculation and design. Pressure measurements proving the fluidmechanical feasibility of the device will be presented. Its optical quality will be discussed along a series of shadowgraphs and interferograms.


Mass Flow Rate Nozzle Exit Aperture Area Dead Water Curve Shock Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J.P. Reilly: 5th GCI. Symp., ed. by A.S. Kaye and A.C. Walker, U No. 74 ( Adam Hilger Ltd, Bristol and Boston 1984 )Google Scholar
  2. 2.
    R.N. Guile, W.E. Hilding: AIAA-Paper, No. 75–122 (1975)Google Scholar
  3. 3.
    W. Masuda, M. Yuasa: Journal de Physique 41, C9, (1980) pp. 423–429Google Scholar
  4. 4.
    E.M. Parmentier, R.A. Greenberg: AIAA, Vol. 11, No. 7 (1973), pp. 943–949CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • E. Wildermuth
    • 1
  • A. Giesen
    • 2
  • H. Hügel
    • 2
  1. 1.Institut für Technische PhysikDFVLRStuttgart 80Fed. Rep. of Germany
  2. 2.Institut für StrahlenwerkzeugeUniversität StuttgartStuttgart 80Fed. Rep. of Germany

Personalised recommendations