Ablation Performance Experiments with Metal Seeded Polymers
Schall, W.O. and Tegel, J. and Eckel, Hans-Albert (2003) Ablation Performance Experiments with Metal Seeded Polymers. Third International Symposium on Beamed Energy Propulsion, Troy, New York, USA, 11.-14. Oktober 2004,.
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The specific impulse of plain polymers has been found too low for application in pulsed laser propulsion for single stage to orbit flights. Therefore, ablation tests with polymers, seeded with Al and Mg powder in various concentrations to reduce the absorption depth, have been conducted with CO_2 pulses up to 280 J and ~12 µs pulse length to measure the coupling coefficient and specific impulse in air and in vacuum. A large and increasing loss of pulse energy, presumably deposited in a decoupled absorption wave, has been found for increasing laser pulse energy. This loss prevents the achievement of better results compared to unseeded material.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Ablation Performance Experiments with Metal Seeded Polymers|
|Keywords:||laser propulsion, lightcraft, laser ablation|
|Event Title:||Third International Symposium on Beamed Energy Propulsion, Troy, New York, USA, 11.-14. Oktober 2004,|
|Organizer:||Rensselaer Polytechnic Institute|
|HGF - Research field:||Energy|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L - no assignement|
|DLR - Research area:||Energy|
|DLR - Program:||L - no assignement|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited By:||Dr.rer.nat. Hans-Albert Eckel|
|Deposited On:||16 Sep 2005|
|Last Modified:||29 Apr 2010 20:36|
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