scholarly journals THE NEW RUSSIAN COMBAT ICEBREAKER “IVAN PAPANIN”

2019 ◽  
Vol 47 (4) ◽  
pp. 248-250
Author(s):  
S.A. Sviridov
Keyword(s):  
Electric Propulsion ◽  
High Reliability ◽  
Scientific Research ◽  
Propulsion System ◽  
The Arctic ◽  
Navigation Systems ◽  
Electric Propulsion System ◽  
The North ◽  
125Th Anniversary ◽  
Long Time

In honor of Ivan D. Papanin, on the occasion of his 125th anniversary, on October 25, 2019, a unique scientific military ship “Ivan Papanin”, 110 meters long and displacement is 9000 tons, was launched in St. Petersburg. Like the famous polar explorer, one of the pioneers of the Arctic, the vessel will also be the first, since such icebreakers have not yet been built in Russia, because this is not just an icebreaker, but also a tugboat and a patrol ship. The icebreaker “Ivan Papanin” is designed to perform various civilian and defense tasks: navigate ships, transport cargo, participate in rescue operations and scientific research. As a warship and formidable border guard, the ship can repulse any troublemakers in the North. It is characterized by high reliability, redundancy of the main engines, the use an electric propulsion system, fixed-pitch propellers, so that the system operates reliably and for a long time. In addition, the ship is equipped with modern communications and navigation systems. Place of work – Arctic, which I.D. Papanin devoted all of himself. The area is not limited. Autonomy of swimming is 60 days. The ship Is able to cope with two-meter ice.

Optimization investigation of vacuum air-intake for atmosphere-breathing electric propulsion system

2021 ◽  
pp. 095441002110298
Author(s):  
Peng Zheng ◽  
Jianjun Wu ◽  
Yu Zhang ◽  
Biqi Wu
Keyword(s):  
Compression Ratio ◽  
Electric Propulsion ◽  
Collection Efficiency ◽  
Diameter Ratio ◽  
Propulsion System ◽  
Simulation Test ◽  
Electric Propulsion System ◽  
Atmospheric Molecules ◽  
Long Time ◽  
Air Intake

An atmosphere-breathing electric propulsion system uses the rarefied atmospheric molecules as the propellant for the electric thruster. In the best case, it can allow spacecraft complete a long-time mission in the lower Earth orbit without carrying any propellant. In this article, the intake geometry is designed, analysed and optimized to improve the performance of atmospheric particles capture, including collection efficiency and compression ratio. The orthogonal method is used in the simulation test to analyse the sensitivities of main parameters, including the configuration of grid ducts, the configuration of tapered chamber, the length-to-diameter ratio of tapered chamber and the diameter of tube. The results show that the performance of air-intake can be optimized with different parameter combinations. Compared with different intake designs of previous studies, the optimal design in this article shows the better particle capture performance under the same boundary conditions. The particles compression ratio is over 100, and the collection efficiency can reach 81.08%.

scholarly journals Design of Hybrid-Electric Megayachts: The Impact of Operative Profile and Smart Berthing Infrastructures

2021 ◽  
Vol 9 (2) ◽  
pp. 186
Author(s):  
Francesco Mauro ◽  
Elia Ghigliossi ◽  
Vittorio Bucci ◽  
Alberto Marinó
Keyword(s):  
Electric Propulsion ◽  
Propulsion System ◽  
Storage Devices ◽  
Electric Propulsion System ◽  
Hybrid Electric ◽  
The Impact

Nowadays, sustainable navigation is becoming a trending topic not only for merchant ships but also for pleasure vessels such as motoryachts. Therefore, the adoption of a hybrid-electric propulsion system and the installation of on-board storage devices could increase the greenness of a megayacht. This paper analyses the performance of three commercial propulsive solutions, using a dynamic operative profile and considering the influences of the smart berthing infrastructures. Results compare the yearly fuel consumptions of the analysed configurations for a reference megayacht.

scholarly journals Design and In-orbit Demonstration of REGULUS, an Iodine electric propulsion system

2021 ◽  
Author(s):  
Nicolas Bellomo ◽  
Mirko Magarotto ◽  
Marco Manente ◽  
Fabio Trezzolani ◽  
Riccardo Mantellato ◽  
...  
Keyword(s):  
Electric Propulsion ◽  
Specific Impulse ◽  
Input Power ◽  
Propulsion System ◽  
Electric Propulsion System ◽  
Propulsive Performance ◽  
Plasma Thruster ◽  
Total Impulse ◽  
Acceptance Tests

AbstractREGULUS is an Iodine-based electric propulsion system. It has been designed and manufactured at the Italian company Technology for Propulsion and Innovation SpA (T4i). REGULUS integrates the Magnetically Enhanced Plasma Thruster (MEPT) and its subsystems, namely electronics, fluidic, and thermo-structural in a volume of 1.5 U. The mass envelope is 2.5 kg, including propellant. REGULUS targets CubeSat platforms larger than 6 U and CubeSat carriers. A thrust T = 0.60 mN and a specific impulse Isp = 600 s are achieved with an input power of P = 50 W; the nominal total impulse is Itot = 3000 Ns. REGULUS has been integrated on-board of the UniSat-7 satellite and its In-orbit Demonstration (IoD) is currently ongoing. The principal topics addressed in this work are: (i) design of REGULUS, (ii) comparison of the propulsive performance obtained operating the MEPT with different propellants, namely Xenon and Iodine, (iii) qualification and acceptance tests, (iv) plume analysis, (v) the IoD.

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