Dutch roll coordination technique

Cub Driver wrote:
The proper use of the term "Dutch Roll" applies to a characteristic of
the lateral stability of an aircraft, i


One of the more famous aircraft subject to Dutch Roll was the Northrop
YB-49 turbojet Flying Wing bomber. The military test pilot Robert
Cardenas (who took over the project after Glen Edwards was killed)
recalled that the bombardier used to get seasick from the
oscillations.

(The YB-49 is cited as the predecessor of the B-2 Spirit stealth
bomber, because it was from Northrop and had the identical span. In
fact, the B-2 more closely suggests the German "nurflugel" designed by
the Horten brothers. www.warbirdforum.com/edwards.htm )


all the best -- Dan Ford
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see the Warbird's Forum at www.warbirdforum.com
and the Piper Cub Forum at www.pipercubforum.com

Yup I would definately believe that. The lateral stability in those
tail-less designs was achieved through wing sweep rather than the usual
vertical fin. I would imagine that they had interesting spin
characteristics as well, although I don't remember it being mentioned
anywhere. The father of flying wing / tail-less designs was Alexander
Lippish.

I would imagine that they had interesting spin
characteristics as well,

I think it was Eric Brown who wrote about flying the British all-wing
aircraft, and having it almost rotate backward on him.

This is probably exactly what happened to the YB-49 that crashed near
Muric (now Edwards AFB) killing the pilot Danny Forbes, co-pilot Glen
Edwards, and the crew.

There are two files on the Warbird's Forum consisting of interviews
with Robert Cardenas, the military test pilot after Edwards, and a
very different view from Northrop test pilot Charlie Tucker
www.warbirdforum.com/edwards.htm


all the best -- Dan Ford
email:

see the Warbird's Forum at www.warbirdforum.com
and the Piper Cub Forum at www.pipercubforum.com