HyperFlags and Rooster-Tails
As it turns out, sequentially synchronous "firing" of multiple membrane
wing-mills is a simple and easy AWE method.
A key synch pattern is to fire three wings in rotation, pulling on three
lines in turn (ADCABCABC...). This action will drive a triple crankshaft
on the ground, just as Lloyd long ago disclosed. The new trick is
to array wingmills along a pilot line downwind where the leading wing's
oscillation sets up a wave that flows in turn to the next wing in line,
and so on. It looks like a waving rooster tail hung upside down.
Consider a flag where the flapping wave starts at the pole and propagates
downwind. A flogging headsail acts the same way: the tensile continuity of
the fabric reliably acts as a
Further imagine that the flag is skeletonized into a herringbone pattern
of ribbon wings and you have a "hyperflag." I made some this morning
and observed highly enhanced oscillation with much less material. To tap
this motion lines are rigged (and tuned) from the lower wingtips in phase
to a conventional (ideally COTS) crankshaft.
See the many old KiteLab posts on membrane wing-mills for important