Only if it's electronically deployed.
So you are only testing the recovery charge?
So you are only testing the recovery charge?
From my basic understanding, the vacuum pump simulates altitude and when attached to a test bulb, shows whether the altimeter will fire at correct times.okay... might as well ask...
I'm brand new to Dual Deploy. I have an Adept 22, and I'll need to ground test charges before I launch in DD mode. This is a couple months off for me, but I saw this thread and figured I'd start the learning now...
1) How does one ground test an altimeter?
2) How do I test whether the altimeter will properly fire the ejection charges?
3) I've seen people use vacuum pumps (and rigged vacuum pumps using sealed containers and syringes)... How does that all work?
From my basic understanding, the vacuum pump simulates altitude and when attached to a test bulb, shows whether the altimeter will fire at correct times.
To ground test the charges, they are put into the loaded rocket and set off with different things from launch controllers, to 9v batteries. Anything that will fire the charge.
If I am wrong please correct me... I have not done DD yet but that is what I understand...
[video=youtube_share;qHfL20o2RaU]https://youtu.be/qHfL20o2RaU?list=UU3builfBvFxj13D88qCUR5g[/video]okay... might as well ask...
I'm brand new to Dual Deploy. I have an Adept 22, and I'll need to ground test charges before I launch in DD mode. This is a couple months off for me, but I saw this thread and figured I'd start the learning now...
okay... might as well ask...
I'm brand new to Dual Deploy. I have an Adept 22, and I'll need to ground test charges before I launch in DD mode. This is a couple months off for me, but I saw this thread and figured I'd start the learning now...
1) How does one ground test an altimeter?
2) How do I test whether the altimeter will properly fire the ejection charges?
3) I've seen people use vacuum pumps (and rigged vacuum pumps using sealed containers and syringes)... How does that all work?
To test structure?
Grab the nose cone with rocket in vertical position. Pick it up holding the NC only and shake a bit. The NC should be snug and barely begin to move.
If it comes right off, I put a wrap or so of tape on the shoulder to snug it up.
Sounds reasonable, anyone else do this?
Pretty sure that simulating the stresses of flight is beyond my budget. Nothing quite like a test flight..
Pretty sure that simulating the stresses of flight is beyond my budget.
I don't know that it is, that is what I'm asking about. If the structure (motor mounting, fins, etc..) can withstand being fixed for a ground test it seems reasonable it would survive in flight. The question is, could the static test itself tear the rocket apart when it would otherwise fly safely?
As a L2, the stress should be something you understand on your own without a stress test, and as a L2, it's quite foolish to not know and use a test flight with an L2 motor. I hope you were joking.
Yes, I'm a hard-azz when it comes to this actually being rocket science, and knowledge you should have at cert levels.. It's not a "badge". It's a journey!
Wait... Are you suggesting clamping the rocket to some sort of stand and lighting a motor in it?
Sure, no one does this in a controlled environment? It would seem that this type of testing would become more and more critical as one endeavors to build ever lighter air-frames.
Maybe I'm asking the question the wrong way... Does anyone calculate the stress on mounts, tubes, etc... exerted by the motor during launch, and then confirm their calculations?
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