Laser Propulsion and the Constant Momentum Mission
作者:
C. William Larson,
Franklin B. Mead,
Sean D. Knecht,
期刊:
AIP Conference Proceedings
(AIP Available online 1904)
卷期:
Volume 702,
issue 1
页码: 216-227
ISSN:0094-243X
年代: 1904
DOI:10.1063/1.1721002
出版商: AIP
数据来源: AIP
摘要:
We show that perfect propulsion requires a constant momentum mission, as a consequence of Newton’s second law. Perfect propulsion occurs when the velocity of the propelled mass in the inertial frame of reference matches the velocity of the propellant jet in the rocket frame of reference. We compare constant momentum to constant specific impulse propulsion, which, for a given specification of the mission delta V, has an optimum specific impulse that maximizes the propelled mass per unit jet kinetic energy investment. We also describe findings of more than 50 &percent; efficiency for conversion of laser energy into jet kinetic energy by ablation of solids. © 2004 American Institute of Physics
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