Harry Fraser-Mitchell writes...
I cannot let you get away with the canard on page 3 (of the
Winter Newsletter) that HP got the idea for the crescent wing
from Arado. I have already taken Ralph Denning to task over
Tne version of the Arado 234, not in fact built, had a swept
wing, the outer panels of which were given less sweep in
order to get the centre of lift nearer the C of G. The
aircraft originally had straight wings and the pure swept
wing which they investigated could not be made to balance.
ARADO CRESCENT CRITICICISM
The idea behind the 'crescent' was aerodynamic in that in
that it was kinked in order to limit the amount of boundary
layer build-up towards the tips. A vortex was shed from each
kink which tended to reduce the outflow.
Both Godfrey Lee and Dietrich Kuchemann, then Head of the RAE
Aero Department, averred that the specific Arado work on the
234 was not used by Handley Page in 1946, and of course the
Ar 234 did not have the linked thickness-sweep relationship
designed to keep critical Mach constant across the span,
which was the other feature of the crescent wing.