![]() ![]() The SLASR performance attributes closely match the critical needs of solar electric propulsion (SEP) systems, which may be used for space tugs to fuel-efficiently transport cargo from low earth orbit (LEO) to low lunar orbit (LLO), in support of NASA s robotic and human exploration missions. Development is underway on a unique high-voltage, high-energy solar concentrator array called Stretched Lens Array Square-Rigger (SLASR) for direct drive electric propulsion.Ĭommand and conquer generals unofficial maps. Results reveal that the VLS G- Fresnel device allows a subnanometer resolution over a spectral range of 200 nm. The VLS grating pattern is designed based on the least wave-change principle and simulated by ZEMAX. In this manner, high resolution can be achieved over a relatively wide spectral range. The VLS grating pattern disperses light of specific wavelengths with a different angle and position such that the aberration caused by the Fresnel surface can be compensated for. Li, Xinghui Zhang, Jinchao Zhou, Qian Ni, Kai Pang, Jinchao Tian, Rui In this Letter, we propose a variable-line-spacing (VLS) grating pattern for a hybrid diffractive device termed a grating Fresnel (G- Fresnel) lens, which is used in spectrometers to improve spectral resolution over a wide spectral range. ![]() Proteus Elliptical Eec 3005 Manual Transmission 7,1/10 661 votes ![]()
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