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Dillon O?Reilly, Georg Herdrich, Felix Schäfer, Christoph Montag, Simon P. Worden, Peter Meaney and Darren F. Kavanagh
Pulsed plasma thrusters (PPT) have demonstrated enormous potential since the 1960s. One major shortcoming is their low thrust efficiency, typically <30%. Most of these losses are due to joule heating, while some can be attributed to poor efficiency of th...
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Nikita A. Bylinskiy, Yuriy K. Kalynov, Valentina E. Kotomina, Nikolay Yu. Peskov, Mikhail D. Proyavin, Andrei V. Savilov, Dmitry D. Sobolev, Alexander A. Vikharev and Vladislav Yu. Zaslavsky
A novel concept of a frequency-tuned sub-terahertz gyrotron based on a combination of an irregular low-frequency resonator and an external reflector has been proposed recently. A simulation was carried out for a fundamental-cyclotron-harmonic gyrotron th...
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Euiho Shin, Young-seek Chung, Seonkyo Kim, Cheolsun Park and Jungsuek Oh
This study proposes broadband direction (DOA) estimation through discrete Fourier transform (DFT) extrapolation. We used DFT extrapolation in the lower band and extended the sampled data to reduce the beam width in the spectral domain and improved the ac...
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Sandro Noto, Molka Gharbaoui, Mariano Falcitelli, Barbara Martini, Piero Castoldi and Paolo Pagano
In recent years, the adoption of innovative technologies in maritime transport and logistics systems has become a key aspect towards their development and growth, especially due to the complex and heterogeneous nature of the maritime environment. On the ...
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Xiong Wang, Wei Liu, Jifeng Ding, Yi Sun and Yongbing Dang
The initiating explosive shock environment of an aerospace mission has the characteristics of instantaneity, high amplitude and a wide frequency domain. An improved method based on the acceleration frequency response function (FRF) and virtual mode synth...
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