Hello and welcome in the eve project. As you may know, we’re trying to build the first Open CH4+LOX Liquid Rocket Engine.
In this thread you will find the most recent updates from the members of the project that are not directly related to a specific activity or work package. It’s a sort of sink for unstructured material, ideas, videos or images of your current work on the project that do not fit more structured places in the Gitlab Issue boards.
The project root namespace on Gitlab is here. Within that namespace you will find all the individual projects we are currently working on. In particular you can check the project issues in order to see what are the current opened (and closed, if you’re curious) activities, the deadlines and milestones imposed, and what we’re struggling with. If you find something you’re interested in, don’t feel shy and post whatever comes to your mind.
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One relief valve is placed before entering the injection head:
It should be as close as possible to the combustion chamber in order to quickly react to a pressure increase.
Being positioned on the feed line and not directly on the combustion chamber is not the best solution but it simplifies the first combustion chamber architecture. It should be moved directly to the injector head if possible.
One manual valve is placed on each relevant section of the feed line in order to depressurise the system in case of an electric valve failure.
One Check (non return) valve is placed on the feed line in order to avoid the pressure raise toward the tank. It can create a large pressure drop: its impact has to be evaluated.
The electric valve is commanded through the Eve Control System, following the programmed test path. It is placed as close as possible to the injector head.
The electric emergency valve is commanded by the operator through an independent control system in order to abort the test (Eve Safety Control System). It is placed as far as possible from the combustion chamber in order to reduce the probability of being damaged during an explosion.
Feel free to comment with critics, suggestions or proposing a different solution
I modified the position of two manual valves to be able to depressurize the system even if all the electric valves are inoperative.
Note: the check valves in the schematic are considered “normally open”.
Ehi @luca.litterio, thanks for the feedback. Can you please provide this feedback directly on the Gitlab issue? Let’s keep this forum thread for informal, unstructured discussion.
I just join the association and the EVE projet. My name is Calin, I am an aerospace engineer. I have a background in thermal and fluid simulation. I am eager to learn and work on more concrete projects
I am still reading all the material available on the forum (quite a lot actually !).
PS: I’m in Paris (actually in Palaiseau), so we can actually organize a meeting somewhere near the RER B . Maybe with the others that are around Paris or just the two of us… Let’s see if someone else is available
We identified a possible task for @mathis.blt that will be the mechanical design of the injector plate.
2020-03-08T19:00:00Z → 2020-03-08T20:00:00Z we’re going to do the next videocall with the objective of setting up a bunch of todos for the next weeks on the Gitlab Issue Board.
Good morning.
We are writing down the circuit schematic for the control system tests. As an example, we report the schematic for the feed line control system test:
As you can see, the schematic has been quickly drawn utilising powerpoint.
Do you know a software which can help in realising a similar schematic in a « better » way?
Better in terms of:
precise connection lines;
automatic ranging/organization of connection lines;
Even if it is not ‹ open ›, Fusion 360 enables since one year the creation of schematic up to gerber files in order to subcontract pcb. (Fusion 360 absorbs Eagle)
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