ColumbiaNX01
Red blooded white American male
How did you make your fin alignment jig and out of what material?
I did not make them myself. They are 1/8 inch G10. Curtis Turner made them for me. I assume they are made on a CNC machine.
How did you make your fin alignment jig and out of what material?
If I remember correctly, the Kobayashi Maru was a cargo ship that was in distress.The captain candidate was commanding a Starfleet ship. Now back to your regularly scheduled build thread.
https://en.wikipedia.org/wiki/Kobayashi_Maru
Do you have a picture of your Missile Works RTX and GPS antenna setup? The GPS receiver and antenna are made on one board that plugs into the RTX board by an 8 pin header from what I can tell from the Missile Works pictures I've seen. It's not clear to me how you can mount the GPS unit remotely from the RTX. I'm only going by what I see on the Missile Works website, but maybe they have other solutions than what's in this picture. The GPS antenna is the square piece at the top. If the GPS antenna is facing towards the fiberglass AB bay lid, I suppose that should work.
Yeah, it was not my picture. I linked a photo from Missileworks but deleted it since it didn't seem to be what Andrew is describing, but was the only pic of the RTX and GPS that I saw on the MW website. Sounds like he has it figured out.
How many of you guys are going the drag separation route or actually having a small charge to separate?
On my few two stage flights: j-I, k-j - I've used a charge to separate the interstage coupler and sustainer. 0.3 -0.5 gram 4F.
Works well.
I'd recommend it. You might like to check out the projects of the staging gods though - Jim Jarvis and others have written great stuff on staging etc.
Good luck with your flight.
What type of electronics do you use to ignite the seperation charge?
I use a PET2+ timer for ISC separation & booster recovery deployment.
It's a timer yes but has many options and they're all based on main engine start, cut off or sustainer start, cut off. Your choice but it's perfect for ISC separation and booster recovery.
What I would need it to do is.... Seperate the ISC then fire a charge at apogee break apart. Then at a special altitude deploy the main. I am using dual cable cutters. Can it do all those in the same flight?
It only has 2 event timers. I used it to separate ISC based on X seconds after booster burnout and then to fire second charge for booster recovery at the expected time of booster apogee. I also had a jolly logic chute release to deploy the booster main at 400'. It all worked as planned.
Curious as to why you would want to use sustainer ignition to separate stages. I have seen a sustainer CATO because it was a little too tight into the interstage coupler and the motor subsequently overpressurized in that split second the two sections were stuck together with the motor burning. It was a spectacular CATO. I think the explosion was heard in the next county.
Curious as to why you would want to use sustainer ignition to separate stages. I have seen a sustainer CATO because it was a little too tight into the interstage coupler and the motor subsequently overpressurized in that split second the two sections were stuck together with the motor burning. It was a spectacular CATO. I think the explosion was heard in the next county.
Yes this can and will happen . Ask Mark Clark . Thunderbolt 1 if I remember correctly . One way to prevent this is to use vent holes in the ISC equall to the throat area of the upperstage motor ( if you are keeping the stages together and not seperating them before ignition ) .
Eric
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