Author Topic: EXOS aerospace  (Read 36037 times)

Online savuporo

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Re: EXOS aerospace
« Reply #100 on: 08/04/2017 07:02 AM »
Moar pics

http://exosaero.com/2017/07/28/sarge-update-73117/

Anything getting lit any time soon ?
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Online ringsider

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Re: EXOS aerospace
« Reply #101 on: 08/06/2017 08:51 AM »
Moar pics

http://exosaero.com/2017/07/28/sarge-update-73117/

Anything getting lit any time soon ?
Looks way more professionally-built than others I could mention...
« Last Edit: 08/06/2017 08:51 AM by ringsider »

Offline Craftyatom

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Re: EXOS aerospace
« Reply #102 on: 08/21/2017 05:07 PM »
EXOS posted a video to Youtube yesterday of a hold-down firing, using what looks to be a full-size SARGE engine and body.  It's characterized as a "low-pressure test", with a full-power one soon to come, but even at this stage it looks bloody impressive.  As some on this forum have said, others have made much more hype over much less achievement...  https://youtube.com/watch?v=SrkCULVaxGo

They also made a blog post to accompany it, with a lot of great pictures before and after the test (if anyone else wants to attach them over here feel free, I'm on mobile and can't really do so): http://exosaero.com/2017/08/20/tie-test-1/
« Last Edit: 08/21/2017 05:11 PM by Craftyatom »
All aboard the HSF hype train!  Choo Choo!

Offline CameronD

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Re: EXOS aerospace
« Reply #103 on: 08/21/2017 11:07 PM »
EXOS posted a video to Youtube yesterday of a hold-down firing, using what looks to be a full-size SARGE engine and body.  It's characterized as a "low-pressure test", with a full-power one soon to come, but even at this stage it looks bloody impressive.  As some on this forum have said, others have made much more hype over much less achievement...  https://youtube.com/watch?v=SrkCULVaxG

Gotta love how the test lasted ~30secs.. and then the minions spend the next minute-and-a-half putting out spot fires!!   :) ;D
With sufficient thrust, pigs fly just fine - however, this is not necessarily a good idea. It is hard to be sure where they are
going to land, and it could be dangerous sitting under them as they fly overhead.

Online savuporo

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Re: EXOS aerospace
« Reply #104 on: 09/14/2017 07:21 AM »
Tie me rocketship down, sport,
tie me rocketship down


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Re: EXOS aerospace
« Reply #105 on: 10/18/2017 10:11 PM »
Misidentified this initially and was told that it is an EXOS stand and engine :)
spaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaace

Online Robotbeat

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Re: EXOS aerospace
« Reply #106 on: 10/24/2017 01:33 PM »
Tie me rocketship down, sport,
tie me rocketship down



Super cool. I love this kind of test of rockets. Between a tethered hover test and a tie-down test, you can get pretty close to actual test flight without a big risk of losing your hardware if things go wrong. Relying more on engine gimbaling than control surfaces also helps address the risk of control inversion as you go through Mach 1.

Good luck!
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Offline lrk

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Re: EXOS aerospace
« Reply #107 on: 10/24/2017 11:04 PM »
I'm curious what sort of valves/plumbing you are using for controlling propellant flow to the engine - do you have one pair of fuel/LOX valves that provide start-up flow followed by a seperate pair of main-stage valves, or is it a single pair that can be opened partially? 
I am a member of a university group that is working towards something similar (if a bit smaller), and finding fast-acting valves with fine-grained throttle control has proven rather... difficult. 

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