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We're building a full size rocket motor for our Hermes Spacecraft. Help us Kickstart the next generation of space travel!
321 backers pledged $20,843 to help bring this project to life.

New Years Fireworks

Posted by STAR Systems (Creator)

Hi Everyone,

Quick Update here.  First, I'd like to show you the latest test firing we performed:

This was our best firing of our 3" motor to date!  Our two-stage test utilized two different feed lines, starting off with a low oxidizer flow rate and then switching over to a high oxidizer flow rate.  You can see the difference in thrust when the switch happens halfway through the video!  We've maxed out the oxidizer flow rate we can achieve using a 50lb nitrous bottle. 

For our next firing, we're going to:

  • Replace the external SS nozzle with an internal graphite nozzle.
  • Test out some thermal protect applicators to the head the motor.
  • Streamline the plumbing on the injector side to move the pressure transducer closer to the pre-combustion chamber.

We've also started work on designing our 10" Motor Test Stand.  Here's a preliminary mockup:

The test stand is going to drawn up in AutoDesk (a Computer Aided Drawing program) and force-tested using ANSYS (a computer-aided engineering program), then we'll start building the platform.

My goal is to provide you an end-of-January update with another test fire video, more work on the 10" test stand, a couple of screenshots of the Hermes in AutoDesk, and some pictures of the 10" motor being built. 

I hope you're as excited as I am about all of the work being done!  Thank you for your continued support!


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    1. STAR Systems Creator on

      ET3D - That was me wrestling with the Kickstarter Update GUI. According to the GUI those extra broken links had been removed, but I guess they were not.

    2. ET3D on

      Great to see the update and to read that you're making progress.

      I see two place holders for images and then an image. Are there supposed to be three images of the stand?