vault backup: 2026-06-25 08:42:23
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windyboy
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---
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title: "Astrobotic Breaks Records for Hot Firing Rotating Detonation Rocket Engine (RDRE)"
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source: "https://www.youtube.com/watch?v=DjnC8KvakKk"
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author:
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- "[[Astrobotic]]"
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published: 2026-04-23
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created: 2026-04-26
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description: "Astrobotic today announced the successful hot fire test of its Chakram rotating detonation rocket engine (RDRE) at NASA’s Marshall Space Flight Center in Huntsville, Alabama. Two Chakram engine protot"
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tags:
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- "clippings"
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- "webclipper"
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---
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> [!info] Source
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> URL: https://www.youtube.com/watch?v=DjnC8KvakKk
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> Title: Astrobotic Breaks Records for Hot Firing Rotating Detonation Rocket Engine (RDRE)
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> Clipped:
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Astrobotic today announced the successful hot fire test of its Chakram rotating detonation rocket engine (RDRE) at NASA’s Marshall Space Flight Center in Huntsville, Alabama. Two Chakram engine prototypes completed eight successful hot-fire tests, accumulating more than 470 seconds of total run time without any discernible damage to the engine hardware. The campaign included a 300-second continuous burn, which is now believed to have set the record for longest duration hot firing of an RDRE engine to date. During testing, each engine produced more than 4,000 pounds of thrust, making Chakram one of the most powerful RDREs ever demonstrated.
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## Transcript
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**0:01** · Astrobotic just successfully hotfired a 4,000lb rotating detonation engine. That puts it squarely in the category of one of the largest rotating detonation engines ever fired. That's not just within small businesses. That's not just in the United States. That's in human history. This is one of the most powerful embodiment of this technology that has ever been created and demonstrated. On each of these tests, we generate over 4,000 lbs of thrust. Uh we achieve steadystate combustion in all of our longduration tests and all of our initial signs are extremely positive.
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**0:34** · We've got a lot of math to do. We've got a lot of analysis to do, but everything we've seen so far indicates that this engine performed as well as we possibly could have hoped for. One of the things that differentiates what we're doing is uh a lot of the rotating detonation engine demonstrations that have been done to date have all been at relatively small scale. So in a lot of cases we're talking a couple hundred pounds of force. Some of them have been, you know, have been incrementally creeping upwards. But to really enable some of these next generation systems, we have to go bigger. And that's exactly what we did.
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**1:03** · Considering what we did this with, this is a small team working across multiple offices on a very modest budget. We think that, you know, not only is this engine efficient, our team is really efficient. And they put in so many hours. Uh so to see this pay off the way it did and to achieve such a historic milestone on our first try uh that was just incredible.
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**1:26** · This is uh a model uh of our Chakram RDRE. This is actually exactly lifelike.
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**1:32** · This is very representative of what we actually fired. So we fired two thrust chambers. It doesn't look like a conventional rocket engine. There's no giant bell on it. It's it's quite small.
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**1:42** · You've got an aerospike nozzle coming out the back here. And all of these are designed to propagate these detonation waves. And so what you get to make these RDREs work is you have these supersonic detonation waves that travel in circles around the outer part of this rocket engine. And in fact, we didn't have just one of these supersonic waves. We had three detonation waves chasing each other around the outside of this. And that's what allows for this very efficient, very rapid combustion to enable these these high thrust applications.
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**2:10** · There's a number of different opportunities uh for infusion of Chakram into some of our existing systems and as we look ahead that's where this gets really exciting is having a rocket engine is one thing.
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**2:22** · What you do with that rocket engine is really what matters. We're excited about developing this technology but we're not developing it just for the sake of of science projects and advancing the state-of-the-art. We're looking at ways to introduce this into our existing product lines. Whether that's our next generation Zogdor vertical takeoff and landing reusable rocket which will be able to get uh affordable space access uh and rapid reuse. So takeoff and land.
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**2:45** · But by introducing this into a future Zogdor variant, we think we can get much higher performance and potentially take more payload up higher or faster. Uh it allows us to just do more because we have more uh more efficient combustion.
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**2:59** · I think most people who are familiar with Astrobotic know about our lunar lander line and we're certainly interested in looking at ways to introduce this to our lander architecture. There's a number of different opportunities potentially for that, but uh that's certainly something we're exploring.
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**3:15** · What What do I have next to me? Um Kitty, this is like this is amazing.
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**3:22** · Okay.
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@@ -0,0 +1,114 @@
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---
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title: dm database usage
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date: 2026-05-22
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vpn_username: gwjhgzzn
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vpn_password: Pygwjh@202409
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102-password: 102GZgw$jH1170510M
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107-password: zwdC1PhH63Zh
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db-user: PYGWJH
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db-pass: Gwjh@2021
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---
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# `=this.title`
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## Project Overview
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**Start Date**: `=this.date`
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**Target Completion**: `= this.date`
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**Status**: Active
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## Objectives
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- [ ] login dm database server 10.160.20.102, 10.160.20.107
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- [ ] check database usage
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- [ ]
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## Context
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### vpn
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easy connect
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https://218.20.201.210
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## Success Criteria
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<!-- How will we know this is complete? -->
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## Key Resources
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<!-- Links to relevant notes, documents, people -->
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## Progress Log
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login server 10.160.20.107 with root
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cat /etc/passwd , if there is dm database user, find dmdba
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```bash
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su - dmdba
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disql
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# PYGWJH
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# Gwjh@2021
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```
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107:
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```sql
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SQL> SELECT
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TABLESPACE_NAME,
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FILE_NAME,
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BYTES/1024/1024 AS MB
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FROM DBA_DATA_FILES
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ORDER BY MB DESC;
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行号 TABLESPACE_NAME FILE_NAME MB
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---------- --------------- ----------------------- --------------------
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1 MAIN /dmdata/dmdb/MAIN.DBF 395964
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2 GWJH /dmdata/dmdb/GWJH.DBF 41018
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3 TEMP /dmdata/dmdb/TEMP.DBF 26396
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4 ROLL /dmdata/dmdb/ROLL.DBF 4330
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5 SYSTEM /dmdata/dmdb/SYSTEM.DBF 236
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已用时间: 4.736(毫秒). 执行号:649496702.
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```
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```bash
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du -h --max-depth=2 /dmdata 2>/dev/null | sort -h
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du -h --max-depth=2 /opt/dmdbms 2>/dev/null | sort -h
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```
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102:
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```sql
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disql
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SELECT
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TABLESPACE_NAME,
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FILE_NAME,
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BYTES/1024/1024 AS MB
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FROM DBA_DATA_FILES
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ORDER BY MB DESC;
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行号 TABLESPACE_NAME FILE_NAME MB
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---------- --------------- ----------------------- --------------------
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1 MAIN /dmdata/dmdb/MAIN.DBF 395964
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2 GWJH /dmdata/dmdb/GWJH.DBF 41018
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3 ROLL /dmdata/dmdb/ROLL.DBF 4330
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4 TEMP /dmdata/dmdb/TEMP.DBF 1024
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5 SYSTEM /dmdata/dmdb/SYSTEM.DBF 236
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已用时间: 395.278(毫秒). 执行号:11300.
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```
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### {{date}} - Project Initiated
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- Set up project structure
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- Initial research phase
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## Open Questions
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<!-- Track what we need to figure out -->
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-
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-
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## Next Actions
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<!-- Immediate next steps -->
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- [ ]
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- [ ]
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||||
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---
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*Using Claude Code? Say: "I'm working on {{title}} in thinking mode. Let's explore."*
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||||
@@ -19,3 +19,9 @@ Obsidian:
|
||||
```
|
||||
sk-44363e94da3847169ac6d7e1aba13fb1
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```
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hemers:
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||||
```
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sk-d5b8444ed4bd4a38883a6dcb30860e95
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```
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Reference in New Issue
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