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The John Batchelor Show

Preview: Bob Zimmerman discusses the shelving of the Dream Chaser mini shuttle, noting a lack of transparency after its anticipated launch date passed. He speculates that extensive ground testing, including vibration and environmental assessments, likely

The John Batchelor Show

John Batchelor

News, Arts, Books, Society & Culture

4.52.8K Ratings

🗓️ 1 October 2025

⏱️ 1 minutes

🧾️ Download transcript

Summary

Preview: Bob Zimmerman discusses the shelving of the Dream Chaser mini shuttle, noting a lack of transparency after its anticipated launch date passed. He speculates that extensive ground testing, including vibration and environmental assessments, likely uncovered a fundamental and expensive problem that developers are unwilling to discuss publicly.
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Transcript

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0:00.0

This is John Batchler speaking with colleague Bob Zimmerman about Dream Chaser, now put on the shelf.

0:08.0

Dreamchaser was a mini shuttle conceived many years ago and very popular to talk about. Great name.

0:15.4

And now it's not going to launch. Why? Bob explains a little, but there's no transparency,

0:21.8

and that's unwise

0:22.8

when it comes to space engineering.

0:26.8

It's a big,

0:28.0

big community,

0:28.9

and it's growing fast.

0:31.1

Odd.

0:31.7

We'll have more of this in future.

0:33.2

Here's Bob on,

0:33.9

Dream Chaser.

0:35.4

Maybe what went wrong.

0:40.5

More of this tonight. Oh, without question.

0:46.2

There's no question. Based on, they were saying they were going to launch last spring and they were going to do ground testing that should take a few months. But once you've done the ground

0:50.7

testing, it shouldn't show up any serious problems. If you designed properly, then you should launch.

0:56.4

But instead, silence.

0:58.2

And silence for more than a year, and ground testing doesn't take that long.

1:01.3

So that indicates the ground testing, vibration testing, environmental testing,

1:05.8

various testing to see a single function as it's launched and after launch and in space.

1:12.2

My speculation is they found something fundamentally wrong with it,

1:15.9

and it's expensive to fix, and they won't talk about it.

...

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