Polyoxymethylene (POM) a.k.a. Delrin has been commonly used for propulsion with carbon dioxide ( CO 2 ) lasers as a solid fuel providing excellent combination of coupling coefficient and specific impulse. In this paper the propulsive characteristics of white and black (carbon‐doped) Delrin will be examined and compared. A Transverse Electric discharge in gas at Atmospheric pressure (TEA) CO 2 laser with 300 ns pulse width was operated at up to 20 J pulse energy to produce irradiances on the order of 1–500  MW / cm 2 on Delrin targets. Fourier Transform Infrared (FTIR) spectroscopy, time‐resolved force sensors, a ballistic pendulum, and Schlieren imaging techniques were used to determine absorption spectra, coupling coefficient, specific impulse, and internal efficiency of Delrin. An analysis will be made of the possible routes for force generation.


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    Title :

    Delrin® for Propulsion with CO 2 Laser: Carbon Doping Effects


    Contributors:

    Conference:

    BEAMED ENERGY PROPULSION: Fifth International Symposium on Beamed Energy Propulsion ; 2007 ; Kailua‐Kona (Hawaii)


    Published in:

    AIP Conference Proceedings ; 997 , 1 ; 254-265


    Publication date :

    2008-04-28


    Size :

    12 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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