Build strength fast with 21-15-9 – the rep scheme that makes hard workouts feel more manageable

21-15-9 is one of CrossFit’s most recognisable and widely adopted workout formats. The structure is straightforward: you complete one or two movements for 21 repetitions each, then repeat those ...
IEEE

High-Voltage Wide Output Range Isolated DC–DC Converter for Micro-Newton Ion Thruster

Abstract: This article proposed an active clamp flyback (ACF) converter with a single transformer with multiple output windings as a power processing unit to provide energy for the ion thruster. The ...
IEEE

Measurement and Prediction of Micronewton Class Thrust of Electric Propulsion Based on the Torsional Pendulum and Machine Learning Technique

Abstract: Accurate and direct measurement of thrust is the most fundamental requirement in the evaluation of electric thruster performance. This article performed the measurement and prediction of the ...
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3I/ATLAS interstellar object could be steered by 'technological thrusters' after anomalies in rotation

A mystery object feared to be an alien ship heading to Earth could be steered by 'technological thrusters', a boffin fears. Photos of the "interstellar anomaly" known as 3I/ATLAS show its jets are not ...