Update on CO2 Laser Ablation of Polyoxymethylene
Sinko, John Elihu and Sasoh, Akihiro and Ogita, Naoya and Scharring, Stefan and Eckel, Hans-Albert and Röser, Hans-Peter
Update on CO2 Laser Ablation of Polyoxymethylene.
In: International Symposium on High Power Laser Ablation 2010, 1278, pp. 548-557.
American Institute of Physics, Melville, NY.
High Power Laser Ablation 8, 18.-22. April 2010, Santa Fe, New Mexico, USA.
Polyoxymethylene (POM) propellants have been studied since the 1970's, and perhaps represent the most promising match of a propellant to the CO2 laser for laser propulsion studies.
Applications range from ground-launch of laser propulsion vehicles at atmospheric pressure to spacebased laser ablation propulsion microthrusters. In this paper we broadly update the state of understanding of CO2 laser ablation of POM based on new experiments conducted in Japan and Germany, with a focus on the basic physics of ablation of flat POM targets. Measurements using 10 J-class and 100 J-class lasers are compared to previous literature results for ablation of POM. Emphasis is placed on the influence of control parameters on ablation, especially the incident laser
fluence and ambient pressure. New results highlight the influence of the ambient pressure on ablation physics from the vaporization threshold to the plasma regime, and clarify the role of the fluence in determining ablation behavior in air and vacuum environments. Imparted impulse and ablated mass were measured at the target using piezoelectric force sensors, impulse pendulums, and scientific balances. The new experimental investigations cover orders of magnitude in fluence (10E-2 to 10E3 J/cm2) and ambient pressure (10E-3 to 10E5 Pa).
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Update on CO2 Laser Ablation of Polyoxymethylene|
|Authors||Institution or Email of Authors|
|Sinko, John Elihu||Micro-Nano Global Center of Excellence, Graduate School of Engineering, Nagoya, Japan|
|Sasoh, Akihiro||Department of Aerospace Engineering, Nagoya University, Japan|
|Ogita, Naoya||Department of Aerospace Engineering, Nagoya University, Japan|
|Röser, Hans-Peter||Institut für Raumfahrtsysteme, Universität Stuttgart|
|Journal or Publication Title:||International Symposium on High Power Laser Ablation 2010|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 548-557|
|Phipps, Claude||Photonic Associates, LLC|
|Publisher:||American Institute of Physics, Melville, NY|
|Series Name:||AIP Conference Proceedings|
|Keywords:||Laser ablation, Impulse measurement, Laser propulsion, Laser Matter Interaction|
|Event Title:||High Power Laser Ablation 8|
|Event Location:||Santa Fe, New Mexico, USA|
|Event Type:||international Conference|
|Event Dates:||18.-22. April 2010|
|Organizer:||Claude Phipps, Photonic Associates LLC|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Laser Research and Technology|
|Institutes and Institutions:||Institute of Technical Physics|
|Deposited On:||19 Sep 2012 14:29|
|Last Modified:||12 Dec 2013 21:46|
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