Phil J wrote in
:

On Feb 1, 7:20*pm, John Smith wrote:
In article ,
*Dudley Henriques wrote:

The DR1 was the result of many different designers from different
countries experimenting with more wings at different aspect ratios
trying to get greater maneuverability and rate of climb.
You are correct in that they were slow, specifically the DR1 which
had a

top speed of barely over 100mph. The reason was interference drag
between the wings.
The maneuverability was excellect in the hands of good drivers, but
the ham handed could dent the fabric in a nano-second with this
crate. Eventually, the idea for the 3 wings (actually, many
airplanes of the period had even more than 3 :-) went the way of
all bad ideas as the structural issues in monoplane design began to
get solved. Bottom line on the DR1 was that it was something new to
be played with by experienced pilots, but the cons outweighed the
pros and the damn thing was slow as molasses, so it was eventually
canned as a viable weap
on.

Didn't AIR&SPACE magazine do an article last year with photos showing
the interference drag on each will resulting from the others?

Yeah, they did. They said the same things Bertie mentioned. The
middle wing was useless due to the interference.

Yeah, to be fair a lot of what I said was form that article. IIRC they did
a computer analysis of the Fokker and found it wanting.

Bertie