Usually the flamey end is up, down, or sideways. In this case the flamey end seems to be both up and sideways at the same time. This is a highly unusual case and should be studied further.
A cracked nozzle will still direct flow for a little while before it totally falls apart - it was a hairline fracture that grew when the burn started - that let gas hit the wall and from there it was all over
That’s crazy, it looks like half of the nozzle was completely shredded. Definitely need to look into the issue. I think you just need a little bit more of JB weld on it Joey.
@BPS.shorts Joe, are you doing propellant characterization burns on the 54mm scale as well, or just looking to use 98mm motors for testing? I can send you CAD (Solidworks v2023 so should work in OnShape) and a testing procedure for a series of 54mm test motors to characterize the propellant using various throat diameters (converging only).
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Usually the flamey end is up, down, or sideways. In this case the flamey end seems to be both up and sideways at the same time. This is a highly unusual case and should be studied further.
Tim did would be very surprised 😊
At least your stand made it out alive!
How come it produced 5000 N when the nozzle cracked? Does it usually have more thrust?
Nevermind, I saw that the nozzle cracked AFTER it had gave out 5000 N :)
A cracked nozzle will still direct flow for a little while before it totally falls apart - it was a hairline fracture that grew when the burn started - that let gas hit the wall and from there it was all over
@@bps.shorts Ok, thanks!
A little bit of hot glue will fix it
That’s crazy, it looks like half of the nozzle was completely shredded. Definitely need to look into the issue. I think you just need a little bit more of JB weld on it Joey.
1382.6psi to 4990.0N the Psi couldn't keep up.
Where’s the landing footage?
Was this the same nozzle from the simplex video or have you made new ones for each test firing?
@BPS.shorts Joe, are you doing propellant characterization burns on the 54mm scale as well, or just looking to use 98mm motors for testing? I can send you CAD (Solidworks v2023 so should work in OnShape) and a testing procedure for a series of 54mm test motors to characterize the propellant using various throat diameters (converging only).