"Robert Ehrlich" wrote in message
...
Bert Willing wrote:

The Calif A21 has a pretty elaborate wing root fairing (I own one, so I
should know).

--
Bert Willing

ASW20 "TW"

"Slingsby" a écrit dans le message de
om...

For the sake of the discussion, why have an upper wing root fillet at
all? The Caproni A 21 wing blends into the top of the fuselage. What
are the advantages/disadvantages to this type of design?

A better example of a wing root without fillet is the LS1f. But the
manufacturer
added them to the LS4. Another example is the Janus B (just had a look on
our
Janus now disassembeld in the workshop).

Most common Grob models have no fillet and fly like it.

Peter Masak had a small publication a few years ago on performance
enhancements, including photos of ASW-20 fillets and mods and tufts in
action. No clue if it's still available.

Frank Whiteley