Centrifugal fiber lasers with solar pumping for space solar power stations in asteroid security problem.
- Paper number
IAC-14,C3,3,8,x21181
- Author
Prof.Dr. Vitaly Melnikov, Central Research Institute for Machine Building (FGUP TSNIIMASH), Russian Federation
- Coauthor
Prof. Vladimir Matiuhin, Moscow Institute of Radioelectronic and Automatic, Russian Federation
- Coauthor
Prof. Aleksandr Milovanov, Federal Space Agency (ROSCOSMOS), Russian Federation
- Year
2014
- Abstract
1-10 GW space solar power stations (SSPS) with a possibility to transmit the energy to the Earth by 2050 may become the most energy efficient space objects. The need for SSPS is stipulated by the traditional energy resources cost increase and the natural disasters damage caused by traditional power engineering anthropogenic impact on the environment. In recent years, the world's growing interest in SSPS is connected with the infrared semi-conductor laser development progress and optical fibers. Their advantages are: the coefficient of efficiency of the power conversion into the infrared laser beam is up to 80%; the laser beam divergence (10-6 rad) is much smaller as compared to the microwave signal (the laser from a geostationary orbit makes a 36 m spot on the Earth, and microwave signal spot equals to 15-20 km); the real advances took place in the hardware components miniaturization (the 250 microns fiber permits to transmit 25 kW light power); the ability to receive energy from SSPS, located a geostationary orbit, exists in high latitude regions of Russia, Cana-da, other northern islands and Antarctica (SSPS based on microwave systems do not allow this possibility). Russia has the unique experience of centrifugal frameless designs as a base for SSPS solar batteries . Such designs have a number of significant advantages over the skeleton analogs. They are: the absence of a hard skeleton, constituting up to 50% of the entire SSPS price ; the ability to reorient (solar tracking) on the gyroscopic principle ; due to the lack of a skeleton there is a possibility to pack an article in a very small volume for a transportation to the orbit; there is an opportunity for an effective adjustment on the Earth; the automatic opening space technology may be implemented. The development of space solar power stations is directed to supply energy to consumers not only on the Earth, but also on the Moon, the Mars , and also in asteroid security problem. Estimates show that the laser infrared radiation impact from the SSPS capacity of 1 GW at asteroid weight of 109 kg to tell him acceleration of about 10-3m/sec. With long- term nature of such impact may effectively change the asteroid orbit. Centrifugal fiber lasers with solar pumping even more interesting direction, because it does not require solar batteries and hard skeleton. It requires the international cooperation, as it is practiced in the controlled thermonuclear fusion process.- Abstract document
- Manuscript document
(absent)