Barry Jenakuns
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jenakuns.bsky.social
Barry Jenakuns
@jenakuns.bsky.social
New profile new Akin Law:
"Capabilities drive requirements, regardless of what the systems engineering textbooks say."
Past 3 days of Blue Origin if you even care.

I mean come on this is cool.
November 22, 2025 at 1:53 AM
Is LOX ISRU architectures a thing? I want them to be a thing. Lunox from the 90s did a fair amount of work on it and it's certainly doable. However, going for full reuse with a re-entry vehicle lander might be a bit more dubious; those margins look tight.
October 26, 2025 at 12:48 AM
Reposted by Barry Jenakuns
I found some footage of the tripropellant preburner demonstrator hot fire test from the Aerojet-CADB (KBKhA) RD-0120 program.

The article also includes this video as well.
September 17, 2025 at 5:48 PM
I like chaos in my programs. At least a little. The permutations allow for new structures to form. This new budget is maybe too much chaos though.
nasawatch.com/trumpspace/c...
May 25, 2025 at 6:32 AM
2 sides of the coin ay. We caught it for a second time; Yay. But we lost it for a second time for a same failure mode; Nay. It's so weird having the two extremes of SpaceX right next to each other.
It's annoying because we were set for 2025 and now this has to be dealt with.
January 18, 2025 at 2:30 AM
Honestly if I disagree with you, it probably means I at least have hope for you. A certain group of people are now pointing lasers at commercial aircraft which they think are drones, I'm never going to interact with them. It's pointless. You however, can grow. And maybe I can to.
December 15, 2024 at 9:27 AM
Conjunction vs Opposition is everyone's favourite argument, even though it will be decided for us. I guess I just think that the view that minimizing time spent at Mars/on mission as a FOM is bad and results in priotizing/funding delta V over mission duration capabilities.
December 14, 2024 at 11:14 PM
Updated Nova page. Dropped a couple secs of ISP on that second stage to allow for flat heat shield, probably for cooling (and maybe hot staging) reasons. Stretched, to be expected, as thrust is pushed, expect tall rocket with hydrolox second stage activity.
December 4, 2024 at 8:51 AM
Varda's success in any measure is one of the companies I care about most. It's the leading effort to crack open the new market of space pharma (maybe very big); if hypersonics is how the sausage is made I guess that is also cool.

spacenews.com/u-s-air-forc...
U.S. Air Force awards Varda $48 million to test payloads on reentry capsules
The Air Force Research Laboratory will leverage Varda Space’s reentry capsules to test various payloads
spacenews.com
December 3, 2024 at 11:23 AM
"Now if only we could talk them into getting a real landing system to go with that stage..." quote from Jon Goff in October 2006 about SpaceX Falcon 9. At the time SpaceX were pursuing passive parachute recovery, which is nowhere near as effective as VTVL reuse for RRR.
December 1, 2024 at 5:12 AM
Hmm. This is a very interesting platform. Twitter being owned by Elon incentives the stans to stay there, so we get to see what space looks like without them. Lots of very 'interesting' posts about SpaceX or at least in how they were derived. Am I in a fighting mood?
November 30, 2024 at 10:41 AM