Laser Propulsion System Performance Requirements for Single Stage to GEO Launch

淡江大學機構典藏 > 工學院 > 機械與機電工程學系暨研究所 > 期刊論文 > Item 987654321/65330

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/65330

题名:	Laser Propulsion System Performance Requirements for Single Stage to GEO Launch
作者:	Hong, Z. C.;Chern, C. Y.;Chern, J. S.
贡献者:	淡江大學機械與機電工程學系
日期:	1995-01
上传时间:	2011-10-20 21:40:54 (UTC+8)
摘要:	This paper gives a discussion about the laser propulsion system performance requirements for optimal vertical ascent to the geosynchronous earth orbit (GEO) with both dynamic pressure and thrust acceleration constraints imposed. The performance index is to minimize the final mass. In other words, the propellant consumption is to be minimized. The acceleration due to the thrust is limited to 2.5 times of the gravitational acceleration at the Earth's surface. The dynamic pressure is limited to the maximum allowable level for space shuttle ascending flight. It is found that for the final mass to be 10% or more of the initial mass, the specific impulse must be 1500 s or larger. The total efficiency of the laser propulsion system is the product of three efficiencies: the transmission efficiency which expresses the atmospheric absorption of the laser energy, the diffraction efficiency which expresses the laser beam spreading in the atmosphere, and the thruster efficiency. Under the consideration of the total efficiency, the power requirement of the laser system as a function of the flight time is solved. The initial mass of the launch vehicle is selected to be 10,000 kg. Its 10% is 1 ton and is the mass of a proper payload. The peak laser power required is found to be 4.5 GW.
關聯:	International Journal of Space Technology15(6), pp.395-401
显示于类别:	[機械與機電工程學系暨研究所] 期刊論文

文件中的档案:

档案	大小	格式	浏览次数
index.html	0Kb	HTML	18	检视/开启

在機構典藏中所有的数据项都受到原著作权保护.

TAIR相关文章

数据加载中.....