Iris Publishers Journal Of Engineering Sciences

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Disturbances of Ozone Layer and Radio Wave Absorption in D-Region of Ionosphere of the Earth During Solar Proton Event: Simulations with СHARM-I Model Authored by Alexei Krivolutsky As it is well known [1], the high-energy solar particles (mainly solar protons), with an energy of several to 500 MeV, enter into the Earth’s stratosphere and mesosphere only in polar regions. For the first time the sharp decrease of the ozone and ion content in e stratosphere was detected on board the American Nimbus-4 satellite in course of one of the strongest flares on the Sun (August 4, 1972) [2]. As the theoretical analysis has shown, the highenergy particles intrusion in polar atmosphere produced oxides of nitrogen (NOx), hydrogen (HOx), and some ions, which destroy ozone in catalytic chemical cycles and increases electron density in polar region. Important steps were made with satellite missions NASA UARS (with HALOE instrument) and European ENVISAT (with MIPAS instrument). Basing on the ENVISAT me...

Continuous Orbital Winding of Thermoplastic FRPs Authored by Rainer Wallasch   In order to satisfy the requirements of functionality and energy and material efficiency, the reduction of moving masses in transportation systems (e.g. cars, trains, electric vehicles) is of crucial importance. The comparatively low masses, high specific strength and the opportunity for large-scale production of fiber-reinforced thermoplastics are showing great potential for industrial applications. One part of the federal cluster of excellence MERGE Exc1075 “technology fusion for multifunctional lightweight structures”, was focusing on the development of the novel technological concepts. As a result, a technology for continuous generation of structural components with convex or concave surfaces was realized by applying an inverted winding process. For the validation of this technology, a pilot plant was developed and tested. The layer structure is realized by welding the fiber reinforced thermoplastic...