Well, I must confess
to being skeptical about such claims and when there appears to be a clear
attempt to mislead, it heightens my doubts even
more.
Here is what I found,
first, it DOES have a motor and Fan Blade – so why the claim it is “bladeless”
. They appear to channel air up to the ring and with air flowing from
the slits (air motion caused by the fan blades in the base of the unit) causes
external air to be channeled along with the fan induced flow. A Bunsen
burner does the same thing in principle the hot exhausting air pulls in fresh
air at the base. Now the real question is how this fan induced flow
is capable of inducting a 15 time greater flow of air. The
principal would appear to be the same as exhaust augmentation with a lot less
energy. So don’t see any deifying of the laws of physics so
far.
But, if
it works for the dyson fan, then why not get 15 times {:>) your current
cooling air flow sitting on the ground with your engine
running?:
Dyson unveils
blade-free fan
The Dyson fan has a conventional motor and fan blade
in the base. The air flows from the base into the upper ring structure. No
magic there. The magic is in the ring structure, where the air flows out a
slit around the front edge of the ring. Here a process called inducement is
put to work. The air flowing out of the slit recruits surrounding air because
of the configuration of the slit. So now there is more air flowing through the
ring structure than there would be from the base fan alone. Dyson claims that
inducement creates a 15x amplification in airflow. Hence the name “Dyson Air
Multiplier”.
I think I’ll wait a
bit before buying stock in the company
ed
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of kevin lane
Sent: Thursday, October 15, 2009 12:18
PM
To: Rotary motors in
aircraft
Subject: [FlyRotary]
off subject - dyson fan defies physics
Ed - I was thinking of
all your diagrams on turbulent inlet vent air flows when I saw a diagram
of the new dyson fan. they claim a sort of laser beam air flow
capabilities. I guess it truly is "revolutionary"!
kevin [maybe my plane doesn't need a
propeller]
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