Harry,
The "bet" video that you found is priceless. Thanks. Once again the rep of UCLA
takes a hit :-)
Note also that there are actually 3 different effective (x,y, and z) axes of
rotation in the geared mechanism of the vehicle drivetrain - although
admittedly it is a stretch to say that they contribute at all to the surprising
outcome via the Dzhanibekov effect.
-- but neither is this ruled out by the favored explanation !
H LV wrote:
Regarding the Dzhanibekov Effect, this video from standupmaths (Matt Parker)
shows why it happens through the use of graphical representations of the
relevant equations.
https://youtu.be/l51LcwHOW7s
There is also a follow up to the veritasium video on the wind powered vehicle
involving a $10,000 bet.
https://youtu.be/yCsgoLc_fzI
Harry
Jones Beene wrote:
FWIW - The same poster has put up a video or two concerning the Dzhanibekov
Effect - which is fascinating in its own right - not well known, and possibly
not fully characterized since it seems to demand more than one (and preferably
three) interacting axes of rotation.
Veritas neglects to mention this oddball effect in the wind power situation,
for the obvious reason that there is apparently only one axis of rotation which
is the fan blades.
... but ...
what if the a similar effect (to Dzhanibekov ) relates to having one major axis
of rotation plus one or more truncated axes, which maybe manifest as vibration
? This relates to the spinning satellite with the whip antennae which will
flip-flop... (to the embarrassment of NASA)
H LV wrote: Is it possible for a wind powered vehicle to move faster than
the wind while it is moving in the same direction as the wind?
https://youtu.be/jyQwgBAaBag
