Intellectual parachute and balloon systems based on fiber optic technologies

Abstract

For any parachute system, it is important to predict the opening forces it will experience in order to make a safe and economic choice of materials to be used. Developed fiber optic sensors on two twisted fibers with the locked ends and variable twisting step have been used for creation of intellectual knots of perspective vehicles, in particular, parachute canopies and slings. We decided to change our measuring procedure from measuring of transmitted power or its Raleigh scattering in different ends of twisted fibers onto Brillouin scattering characterization. For this situation we offered the kind of method of frequency variation to get the information about the frequency shift and Q-factor of the Brillouin scattering in each sensor.

Mutual Influence of the Melting Stage and Electric Arc Current Harmonic Composition in Different Types of Electric Arc Furnaces

“…This parameter can be used to build advanced control systems for electrical chipboard modes, in which, instead of the specific consumption of electrical energy W SPEC , information is used on the higher harmonics of the arc currents. The I 'HH.EVEN .Ʃ parameter is preferable to determine the end of the charge melting period compared to the other coefficients since it has the best correlation with the conditions of electric arc burning [17,18]. http://journals.uob.edu.bh (2) , % I' (4) , % I' (6) , % I' (8) , % I' (10) , % I' (3) , % I' (5) , % I' (7) , % I' (9) , % I' (11) , % Max.…”

Russian-Chinese relations in the sphere of regional and international security after 2014

“…Сейчас же РФ просто меняет одних по-ставщиков на других. Место тех, кто попал под рос-сийские санкции, займут Белоруссия, Китай, Бразилия, Аргентина, Турция [28]. Все это сопровождается це-лым рядом негативных эффектов для самой России.…”