نتایج جستجو برای: nanosatellite
تعداد نتایج: 230 فیلتر نتایج به سال:
The problem of pre-flight calculation the orbital parameters first nanosatellite Belarusian State University CubeBel-1 before launching from Jiuquan Satellite Launch Center in China has been solved. passes over ground station were predicted based on perturbed circular motion model. initial TLE file was generated and published Internet. This allowed dozens radio amateurs 5 continents successfull...
The problem of forming a rotating ring-shaped tethered system consisting three nanosatellites is considered. To analyze the dynamics tether system, mathematical model developed in orbital coordinate using Lagrange method. Using sliding mode control method, two programs for deployment tethers are proposed, which tensions and thrust forces created by low-thrust engines used as controls. In first ...
The paper describes reactive flywheels based on brushless magnetoelectric motors for controlling the spatial orientation of satellites, developed at Institute Electrodynamics National Academy Sciences Ukraine. main attention is paid to problem implementing a rotor angular speed and position sensor, provided that it can be integrated into motor design. influence number feedback signal pulses per...
In recent years a trend of using CubeSat-class nanosatellites for commercial and scientific missions has taken the lead; this is due to advantage available low-cost products on market without need large development infrastructure investments. On our behalf, advanced approach build CubeSat platform dedicated academic engineering training different satellite subsystems, including transponder base...
Auroras can be regarded as the most fascinating manifestation of space weather and they are continuously observed by ground-based and, nowadays more more, also space-based measurements. Investigations auroras geospace comprise main research goals Suomi 100 nanosatellite, first Finnish satellite, which has been measuring Earth's ionosphere since its launch on Dec. 3, 2018. In this work, we prese...
CORRECTION article Front. Astron. Space Sci., 20 February 2023Sec. Astronomical Instrumentation Volume 9 - 2022 | https://doi.org/10.3389/fspas.2022.1121003
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