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Transcription: [00:11:34]

{SPEAKER name="Werner Karl Dahm"}
And you needed much control force to control power, control muscle, to put the vessel at an angle of attack. And with this center of pressure shift you simply didn't have the muscle for the A9, as well as for the, for my Wasserfall.
[00:11:58]

The wind tunnel, by trial and error, found a configuration which had very little center of pressure shift, and this was controllable and flew.
[00:12:13]

{SPEAKER name="Michael Neufeld"}
You're talking about Wasserfall now.

{SPEAKER name="Werner Karl Dahm "}
Yes.

{SPEAKER name="Michael Neufeld"}
Let me ask you a couple of questions about your A9 period.

{SPEAKER name="Werner Karl Dahm"}
OK.

{SPEAKER name="Michael Neufeld"}
Since that's, you know, that's something that I need to find out about as well. Um
[00:12:28]

{SPEAKER name="Werner Karl Dahm"}
You see here, this is [[crosstalk]]

{SPEAKER name="Michael Neufeld"}
the first configuration-- [[crosstalk]]

{SPEAKER name="Werner Karl Dahm "}
The first configuration

{SPEAKER name="Michael Neufeld"}
--for Wasserfall, the straighter wings in the later configuration
[00:12:39]

{SPEAKER name="Werner Karl Dahm"}
this configuration, you wrote.

{SPEAKER name="Michael Neufeld"}
uh hmm, yeah, um, so you basically spent your first year and a half mostly working on a design, a redesign of A9 --

{SPEAKER name="Werner Karl Dahm"}
on the A9 and worrying about what causes this center of pressure shift and so, learning more about the supersonic aerodynamics.
[00:13:04]

{SPEAKER name="Michael Neufeld"}
So does that mean that you would spend, I mean I'm trying to figure out what the division of responsibilities is here between the Projektenabteilung and the wind tunnel. You would be working on the design on paper and producing models for use in the wind tunnels, or?
[00:13:24]

{SPEAKER name="Werner Karl Dahm"}
The wind tunnel built its own models. They had a model shop. The wind tunnel is one discipline,

[00:13:32]
{SPEAKER name="Michael Neufeld"} Right

{SPEAKER name="Werner Karl Dahm "}
experimental aerodynamics.
[00:13:34]

The Projektenabteilung had a number of disciplines: we had people who would calculate projectories, people who would investigate control, people who did structure, structural design, structural assessment.
[00:13:52]

So in the Projektabteil there was more an overview over everything which was very interesting to me as a young, young engineer because I could see the whole interplay, somewhat. We had somebody who knew the engines
[00:14:11]

Transcription Notes:
---------- Reopened for Editing 2023-06-18 14:49:39