Dear Martin,

Are you saying the frequency of the beat oscillates at frequency x and sets
up a standing wave in the air surrounding it? Just and old f*rt technician
seeing if he understands.

Jerry W. Hubbard

PS This is a great list. :)

> -----Original Message-----
> [mailto:[EMAIL PROTECTED]]On Behalf Of Martin Tuip
> Sent: Friday, January 04, 2002 7:04 AM
> To: Exchange Discussions
> Subject: RE: Was: Question from a troll to a Yoda - Now: RFC Question
> Obviously bumble bees do fly but no fixed wing study in a conventional
> wind tunnel has shown how enough lift can be generated to lift the huge
> mass of a bumble bee (compared to its wing size). A wide range of
> studies have been done in recent years to try to understand the bee's
> unique method of flying.
> Insects like the bee do not flap their wings up and down as one might
> think. The movement of their wings is forward and backward. Lay your
> right hand on the table (palm down) and move it to the left. That is
> what the bee does as the first part of its wing beat. This movement
> produces lift because your hand produces the same effect as an airplane
> wing. Air moving over the top produces a low pressure because of the
> greater curvature, a principal known as Bernoulli's principal. Now flip
> your hand over (palm up) and return it to its original position.
> Computer studies shown that the timing of the flip is critical. The wake
> of the forward stroke allows the wing to recapture energy as the wing is
> moved back. There is a surge of forces on the wing as this happens which
> provides great lift at minimal energy. Dr. Adrian Thomas of Oxford
> University says, "The whole system is a lot more complicated than we
> thought." A lot remains to be done to understand this, but the
> maneuverability and efficiency of it indicates man needs to understand
> to improve his own methods of flying.
> To suggest that such systems come about by chance strains credibility to
> the limit. The enormous complexity of the motion, the design of the
> wings to do the flying, and the support system that moves the wing all
> speaks of highly planned and designed structures that we still do not
> totally understand.
> Does that answer your question?
> Martin Tuip
> MVP Exchange
> Exchange 2000 Listowner

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