Newsletter 12
Spring 2006
Updated on 25Feb2006
Published by the Hawker Association
for the Members.
Contents © Hawker Association

Arado crescent criticisms
Association ties
Beyond the Harrier
Christmas lunch
Col. John Driscoll
Comet to Hawk
Double testimonial
Hawk news
Hawker people news
Indian Harrier
Kingston heritage project
News of members
Not boring at all
Programme 2006
RAF Harrier story
RN CVF carrier and F-35b
Sea Harrier finale
Sea Fury racers
Sopwith stories
Thomas Allan Collinson
Who's who?  
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 this!

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.

top top
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.