Anomalous movement resistance in a spinning gyroscope
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From: Roy L. Fuchs on 2 Apr 2006 17:35 On 2 Apr 2006 03:06:41 -0700, top9(a)gazeta.pl Gave us: >Polish experiments with turbine >Scientists from the Jagellonian University and Opole University have >observed that multiple rotation of a simple turbine showed that the >more times you turned it, the longer it rotated on its own later, >although, theoretically, it should not. They published the results of >their research in "Journal of Technical Physics". > >THE ROTOR "REMEMBERS" THE EARLIER TURNS > >"It turns out that the rotor 'remembers' the earlier rotations and so >the more it is turned, the longer it will spin later. This effect is >more noticeable when the turn is in a different direction, that is the >turbine is turned first to the left, then to the right" - explains >Jerzy Mazur, a physicist, one of the authors of the article. When the >rotor is turned in different directions it appears to spin for much >longer. It also has a different timing for different directions. > >The experiment was conducted with the use of a turbine fixed in a >bearing (i.e. a gyroscope secured in a yoke). A gyroscope is a >mechanical appliance used mainly as a stabiliser. The simplest version >is a heavy wheel rotating round its own axis. The experiment involved >giving an impetus at a given speed and then stopping it so that the >friction of the bearing would cause it to stop. The speed and time was >measured by computer. > >BEARING OR TEMPERATURE > >The experimenters did ten minute breaks between each run so as to allow >the bearing to cool. Another session of measurements was conducted to >check whether the changes were not an effect of the smoothing of the >mechanism. > >"The rotor's axis was placed vertically, so the bottom bearing was in >work mostly as it was weighted with the turbine. After the first >measurement, the yoke was turned so that the bottom bearing was on top >and after taking five measurements the yoke was turned again and >another series of measurements was taken". The results show huge >differences between the measurements, which indicate that friction is >not the only factor. > >NOBODY KNOWS THE CAUSE > >"We cannot establish the cause of this phenomenon. We have discovered >the effect and now theorists are trying to get their head round it. But >this may change thinking about basic mechanics. We have run this >experiment for a few years on different gyroscopes and we have achieved >the same effect. We have made around two-hundred-and-fifty thousand >measurements" - says Mazur. > >The authors of the experiment would like other physicists to also >research this problem as it will enable the problem to be solved, which >may cause a technological breakthrough. It may be a solution as to why >temperature rises due to friction in turbogenerators (turbine >electrical generators), which usually results in damage. > >The research was conducted in the Physical Chemistry Institute of the >Jagellonian University as part of a science research contract signed >between Jerzy Mazur's team and the Rector for Science Research at the >Jagellonian University, Professor Maria Nowakowska. This is simple. The bearing, even though it seems as a point to you, is actually a tiny swept surface thrust bearing. The one bearing that holds the weight of the gyro in a gravitational setting, like being on the surface of a planetoid has quite a lot of pressure on that swept face bearing. A ten pound gyro would make for hundreds of pounds per square inch on the bearing face. That polished face becomes sympathetic to being wiped in a given direction, and going the other way, after a short time will show the spin down time to grow in that direction as well, just not from the start Upon a direction change. Sure, that metallic bearing face is burnished by the ruby. It seems reasonable to me to think that the burnished face of that mating surface might be more slippery wiped one way, than the other. Then after being wiped the other way, the bearing would sympathize with that direction friction wise. Thereby exhibiting the behavior in both directions eventually. Again, an uncaptivated gyro in earth orbit will spin for a very, very long time. Many, many hours longer, yet will show no "spin direction sympathy" or "memory" attributes. The main clock spring gyro in a clock mechanism rotates in both directions its entire life.
From: CWatters on 2 Apr 2006 19:12 "Roy L. Fuchs" <roylfuchs(a)urfargingicehole.org> wrote in message news:4sf0321f4s8sq23vie5bska0it325pdgml(a)4ax.com... > That polished face becomes sympathetic to being wiped in a given > direction, Yes it's probably something like that. This effect could easily be eliminated by turning the gyro disc over so that the bearing allways turns the same way but the main mass of the rotor is reversed.
From: top9 on 3 Apr 2006 05:06 http://jtp.ippt.gov.pl/
From: top9 on 3 Apr 2006 12:14 http://www.oswirus.krakow.pl/cat_14/gyroscope/artykul_JTP.pdf
From: Hexenmeister on 3 Apr 2006 14:42
<top9(a)gazeta.pl> wrote in message news:1144080851.538046.212680(a)v46g2000cwv.googlegroups.com... | http://www.oswirus.krakow.pl/cat_14/gyroscope/artykul_JTP.pdf Brass disk (242.94 g) supported on a steel spindle (23.46 g) and a steel bearing. Try an alnico rotor on a brass spindle. http://www.magnetsales.com/Alnico/Alprops.htm#magnetic Androcles. |