The propulsion performance of polyoxymethylene (POM) seeded with micron‐scale aluminum (μAl) powder has been studied experimentally with CO 2 lasers. The results show that the momentum coupling coefficient ( C m ) and specific impulse ( I sp ) of POM seeded with μAl powder is almost the same as pure POM at lower power density (<1⋅7×10 6 W / cm 2 ). At higher power density (>1⋅7×l0 6 W / cm 2 ), C m of POM seeded with μAl powder decreases significantly while I sp increases significantly. When this material is put into a cylindrical nozzle, the measured maximum C m and I sp can raise to 40.1 dyne/W and 1361 s, respectively. The energy usage ratio is over 100%, which indicates that the aluminum powder may react chemically with the air under the constraint condition. This conclusion was verified experimentally both in atmosphere and vacuum conditions.


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    Title :

    Experimental Study Of Polyformaldehyde Propellants Seeded With Micron‐Scale Aluminum Powder For Laser Propulsion


    Contributors:
    Li, Long (author) / Peng, Jie (author) / Hu, Xiaojun (author) / Zheng, Hang (author) / Tang, Zhiping (author) / Phipps, Claude (editor) / Komurasaki, Kimiya (editor) / Sinko, John (editor)

    Conference:

    BEAMED ENERGY PROPULSION: 6th International Symposium ; 2009 ; Scottsdale (Arizona)


    Published in:

    AIP Conference Proceedings ; 1230 , 1 ; 176-185


    Publication date :

    2010-05-06


    Size :

    10 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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