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Posts by johnmpowell.bsky.social

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New Video: youtube.com/shorts/dKyX4...
Spaceship don't get any cooler than the
X-24B. The hot rod of spaceplanes.

15 hours ago 0 0 0 0
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Does anybody remember this 1996 space classic? I watched it again recently. Still an amazing vision of hope and possibility.

1 day ago 1 0 0 0
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Hypersonic glider 2026

1 day ago 4 1 0 0
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Fun report from 1958. The things they knew back then...

1 day ago 1 0 0 0
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1/200 of a second after 60 foot diameter balloon burst at 100,000 feet.

1 day ago 2 1 0 0
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At 100,000 feet aboard Away 121. Camera 1.

4 days ago 3 0 0 0
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Away 121 balloon platform up top. Those little boxes are MiniCube payload containers. They are just like standardized containers on ships, just a lot small and at the edge of space.

4 days ago 1 0 0 0
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Fun Fact: If the Stanford Linear Accelerator was a rocket engine it would have a specific impulse (ISP, a measure of performance) of 30 million. To compare: Chemical engines, ISP 350 to 400, Nuclear thermal rockets (theoretical) ISP 900, Ion Engine ISP 3,000 to 30,000.

5 days ago 4 0 0 0
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New Video! youtube.com/shorts/F_G3V...
The F-86 Saber, the plane that fought Godzilla. If you want to see great F-86 B-roll scenes, old Godzilla movies is where to find it. It's hard to believe this advanced aircraft was designed in 1945.

5 days ago 2 0 0 0
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New Video! youtube.com/shorts/aOOGF...
The C-119 Flying box car on the inside. A YouTube short.

1 week ago 1 0 0 0
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New Video! youtu.be/PueIpRivhQE?...
Unexpected discoveries. What can happen when you build an old model.

1 week ago 2 0 0 0
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Forgotten Space History. Before there was Project Mercury there was Project Adam.

1 week ago 3 1 0 0
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Playing in the sky. A moment after balloon burst aboard the Away 135 mission. That's the Humbolt river and the Rye Patch reservoir below.

1 week ago 2 0 0 0
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Video: youtube.com/shorts/4ZbjK...
A tale from dark (chocolate) side of space.

1 week ago 2 0 0 0
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New Video! youtu.be/iwTjW8_oKcM?...
This is an expanded version of the video I posted earlier, but with more details and an explanation of how it works.

1 week ago 3 0 0 0
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Breathtaking.
Go Artemis Go!

1 week ago 5 0 0 0
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The more helium you put in your balloon, the faster you climb shorting your landing distance, but the balloon pops sooner. Solution? Vent the extra helium up top with a valve. This video shows the valve still attached coming back down.

2 weeks ago 2 0 0 0
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Working the program. A moment after balloon burst on one of our high-altitude platforms. We have found that if you want to develop upper atmospheric systems, nothing beats being there.

2 weeks ago 3 0 0 0
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We had a leak in the submarine support boat we just could not find. Gallons of soapy water, no luck.
So we turned the boat into a bathtub.
Success. Now on to patching.

2 weeks ago 3 0 0 0
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Totally made my morning. The world out the window, taken today from Artemis 2.

2 weeks ago 3 0 0 0
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New Video: youtube.com/shorts/AClH5...
It's your time. Get out there. (sound up)

2 weeks ago 1 0 0 0
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New Video! youtu.be/KAAwqzpu0H4?...
One of our little test block engines and where it will lead.

2 weeks ago 1 1 0 0
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Earth from the Orion spacecraft right now.
Awesome.

2 weeks ago 1 0 0 0
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New Video! youtu.be/5gaNLIgfK8M?...
I've posted a lot of quick clips of our Tandem airship. I've finally put them all together in this two minute "directors cut".

2 weeks ago 3 1 0 0
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With Artemis on the pad it's time to shamelessly promote Space Kitten on the Moon Mug!
dark-sky-market.myshopify.com/collections/...

2 weeks ago 4 0 0 0
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Go Artemis Go!

2 weeks ago 5 0 0 0
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New Video! youtu.be/p0DsjCyJ084?...

3 weeks ago 5 0 0 0
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The flight of Away 131. This mission tested a new valve system for our high-altitude airships and carried hundreds of student experiments. We flew it a few years ago during the big fires in the western US. This made the Earth look more like Venus.

3 weeks ago 3 0 0 0
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High Altitude operations. One of ours seen from one of ours.
The second balloon platform is a about a 1/4 off. One of the missions we're working on is rendezvous.

3 weeks ago 3 0 0 0
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Book Review:
I just finished "Who Owns the Moon" by A.C. Grayling.
It's an overview of outer space treaty, Antarctic Treaty System, & the Law of the Sea Convention& how they relate to the Moon. What works, what doesn't & the current state of play. An excellent intro to the subject.

4 weeks ago 2 1 0 0