The analysis of laser pulse effects on polymers is presented as applied to laser ablation propulsion. Polymers of CHO-chemical composition are considered to use as propellants to increase the efficiency of LAP by burning of polymer vapors and producing such combustion components of this reaction as CO2 and H2O. Theoretical analysis of the ablation effects is considered on the base of polymers burning models.
Moreover, high-temperature oxidation of the ablated CHO-materials as well as release of combustion energy in the ablated vapor are considered as basic chemical reactions resulting from laser ablation of polymers. The first reaction is a chemical oxidation of the vapor components by oxygen entering into the polymer’s composition. The second reaction is a delayed burning of the partially oxidized vapor components in the atmospheric oxygen.
In the case of the laser ablation propulsion based on the ablation of CHO-polymers, the concept of laser-propulsion efficiency is defined more correctly by the analogy with the efficiency of conventional jet engines, namely, as a ratio of exhaust jet power to the total power of the energy sources originated in a combustion chamber.
Laser Ablation of Solid Materials, Laser Ablation Propulsion
SS Atomic, Opt., Plasma Phys.
2021-08-26
40 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Solid targets , High-melting and low-melting materials , Vapor mass flux density , Prokhorov’s gas-dynamic theory , Ablated vapor jet , Under-expanded vapor jet , Exhaust jet velocity , Solid propellant , Thrust cost , Plasma ignition , Plasma ignition time delay , Direct laser ablation propulsion , Combined laser ablation propulsion , Confined laser ablation propulsion , Multilayer structured target , “Cannon-ball” effect , High-energy polymers , Plasma-chemical reactions , К-factor for CHO-polymer Physics , Optics, Lasers, Photonics, Optical Devices , Aerospace Technology and Astronautics , Plasma Physics , Astronomy, Astrophysics and Cosmology , Engineering Fluid Dynamics , Physics and Astronomy
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