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Transcription: [00:33:55]
{SPEAKER name="MICHAEL NEUFELD"}
Now, what, for Wasserfall, what, uh, what injector did you use? Did you use a modification of that injector? [[crosstalk]] Successfully?

{SPEAKER name="KONRAD DANNENBERG"}
As far as I know, they went finally to a Mischdüse.

[00:34:07]
{SPEAKER name="MICHAEL NEUFELD"}
So you did, perfect a smaller version?

{SPEAKER name="KONRAD DANNENBERG"}
Right. On the other hand, of course the Wasserfall was never mass produced. They flew a few test vehicles, and I'm sure they still have some problems. I was not too close to the Wasserfall, so I don't know the details there too well.

[00:34:29]
{SPEAKER name="MICHAEL NEUFELD"}
So you were not directly involved in the propulsion plant development for Wasserfall?

{SPEAKER name="KONRAD DANNENBERG"}
For Wasserfall, no I was not.

[00:34:36]
Ja. I was at that time in charge of getting the V-2 really being mass produced.

[00:34:41]
I was Riedel's deputy, Walter Riedel's deputy. And he, as head of research and development was in charge to get the drawings out, to get the drawings to the Mittelwerk for production, and that was really my main effort in the last 1 or 2 years. To get all the drawings established.

[00:35:01]
To stop changes, we had a fairly tight change procedure, so that people had to propose to the Change Board what they wanted to change, and if the Change Board turned it down, the change was not being made.

[00:35:14]
On the other hand, as you pointed out, there were many changes that had to be made. We didn't get the material anymore.

[00:35:21]
That is one of the reasons that we finally drilled the holes in these injection elements. We couldn't get enough brass.

[00:35:27]
These nozzles were built from brass, and we just couldn't get enough, so we finally went to the method just to drill the holes in the wall, which is of course also simpler, ja. So you also save labor.

[00:35:40]
{SPEAKER name="MICHAEL NEUFELD"}
What, how would you have done it with brass? Could you cast the, the [[crosstalk]] brass?

{SPEAKER name="KONRAD DANNENBERG"}
They were basically cast--
[00:35:47]

{SPEAKER name="MICHAEL NEUFELD"}
with the holes and the--

{SPEAKER name="KONRAD DANNENBERG"}
--they had to be turned on a lathe and then they were screwed into the wall. So the wall had to have instead of a round hole, a thread in it. A thread for these little individual nozzles.
[00:36:01]

{SPEAKER name="MICHAEL NEUFELD"}
Uh, the injectors you mean. Each, OK, so that you, but you had originally tried to, to cast them in bronze?

{SPEAKER name="KONRAD DANNENBERG"}
Right.

[00:36:11]
{SPEAKER name="MICHAEL NEUFELD"}
with the holes--

{SPEAKER name="KONRAD DANNENBERG"}
All the early designs were for all the nozzles, bronze nozzles.

[00:36:16]
{SPEAKER name="MICHAEL NEUFELD"}
They were cast [[crosstalk]] with the holes already--

{SPEAKER name="KONRAD DANNENBERG"}
They were cast--

{SPEAKER name="MICHAEL NEUFELD"}
without having to bore them?

{SPEAKER name="KONRAD DANNENBERG"}
No, no, you still had to drill the hole.

[00:36:22]
And you also had to turn them. They had to be fairly accurate, you couldn't in those days cast a, a thread. They had to have a thread in order to be threaded in.

[00:36:32]
So that involves a lot of lathe labor.
[00:36:37]