论文信息 - Laser‐Driven Mini‐Thrusters

Laser‐Driven Mini‐Thrusters

Laser‐driven mini‐thrusters were studied using Delrin® and PVC (Delrin® is a registered trademark of DuPont) as propellants. TEA CO2 laser (λ = 10.6 μm) was used as a driving laser. Coupling coefficients were deduced from two independent techniques: force‐time curves measured with a piezoelectric sensor and ballistic pendulum. Time‐resolved ICCD images of the expanding plasma and combustion products were analyzed in order to determine the main process that generates the thrust. The measurements were also performed in a nitrogen atmosphere in order to test the combustion effects on thrust. A pinhole transmission experiment was performed for the study of the cut‐off time when the ablation/air breakdown plasma becomes opaque to the incoming laser pulse.

[1] Wolfgang O. Schall,et al. Lightcraft Impulse Measurements under Vacuum , 2003 .

[2] Andrew V. Pakhomov,et al. Angular distributions of plasma edge velocity and integrated intensity: Update on specific impulse for Ablative Laser Propulsion , 2005 .

[3] Willy L. Bohn,et al. Laser Propulsion Activities in Germany , 2003 .

[4] George P. Sutton,et al. Rocket propulsion elements - An introduction to the engineering of rockets (6th revised and enlarged edition) , 1963 .

[5] Jun Lin,et al. Effect of air pressure on propulsion with TEA CO2 laser , 2004, SPIE High-Power Laser Ablation.

[7] Franklin B. Mead,et al. Laser-Powered, Vertical Flight Experiments at the High Energy Laser System Test Facility , 2001 .

[8] D. Gregory,et al. Ablative Laser Propulsion Efficiency , 2002 .