FUNcube-1 satellite: Why does spin direction flip? Since launch of the amateur radio FUNcube-1 (AO-73) CubeSat in 2013 the team have observed the spin of the satellite based on the panel temperatures The FUNcube team have speculated why the satellite spins up and down and occasionally flips the direction of spin. Recently Jason Flynn G7OCD found a YouTube video that might explain the flip: Watch The Bizarre Behavior of Rotating Bodies, Explained The spin rate change is still a mystery but the FUNcube team have proposed: • The YORP effect: • Electromagnetic torquing due to changes in current levels on the bus conductors during changes in illumination Read more here There is a FUNcube open group and you can join at https://groups.io/g/FUNcube/ AMSAT-UK https://amsat-uk.org/ https://twitter.com/AmsatUK http://www.southgatearc.org/news/20...n-difficult-issues-mark-first-week-of-wrc.htm
That may explain when I work the sats sometimes the signals fade in a Milli-second and then come back in a short time. I assume the antennas polarization changes very rapidly. Interesting video. Mike, ve4mm
Left hand circular polarization & Right hand circular polarization ! on your antenna array help on up link & down link but sometimes nothing helps ! Hi Hi 73' Phil KI6PMD see you on the next pass..
They only allow people who are left handed put them on. So if you take them off with your left hand, everything works out nicely.
You had me scratching my trying to figure out this out. Darn satellite systems keep changing so fast!