I can only predict how hot that nosecone ultimately gets. The curves on a nosecone require finite analysis thermally with a Solidworks package I no longer have access to post graduation. The length of aluminum tip it is unknown because it’s not hand solvable that I know of but I would reckon a few inches of solid aluminum would be fine. Aluminum makes a great heat sink, forget the steel you won’t need it. Steel anything non recovery hardware related will make launch approval harder. Sorry to be the downer. Wish I could help more.
Does this finite analysis come on the 2018-2019 student edition of solidworks?
I don’t believe so. The university had some nice addons and had an “educational” full feature version which was unlocked as if it was a commercial license with the excuse of it was to be used for academic uses only. Many students complained the student version hardly did much to be honest. I never personally tried the student version.
Taking the nosecone in today to get the aluminum tip built. As stated before the tip will have all-thread so it can be bolted to a lower plate.
I'm thinking 3-4" in length should be plenty.
Chuck C.
I don’t believe so. The university had some nice addons and had an “educational” full feature version which was unlocked as if it was a commercial license with the excuse of it was to be used for academic uses only. Many students complained the student version hardly did much to be honest. I never personally tried the student version.
Taking the nosecone in today to get the aluminum tip built. As stated before the tip will have all-thread so it can be bolted to a lower plate.
I'm thinking 3-4" in length should be plenty.
Chuck C.
Started work today on the Avionics Bay. I'll post pics once I get a little further along.
It's going to have an aluminum u-channel on each side that the 6" x 12" Delrin plate for the electronics to slide into.
The Bay is designed to be removed completely from the rocket for prepping. There's a permanent 1 1/2" switch band that is the same OD as the airframe and will be epoxied right in the middle of the AvBay. It's purpose is to house the access holes for the arming of the electronics.
Again will post pics soon.
Chuck C.
What kind of switches are you thinking about? Given the anticipated performance I am thinking this is one area where you don’t need to go nutso.
. One of the Q’s is for testing.
Man, 385 pounds! Thats one big motor! What thrust are you hoping it will have?
Good question.
The switches are from SMT Design. You screw in the bolt from outside the rocket and it locks the spring switch into the "on" position.
Nothing is fool-proof of course but this is a very robust way to keep a switch on.
Chuck C.
Chuck,
I really like the "concept" of that Switch Lock . . .
A "word of caution" - You are still "at the mercy" of that cheap, little Chinese slide-switch,however !
Dave F.
Chuck,
Remember that each additional component introduces a potential "failure mode" . . . Be careful !
Got your back . . .
Dave F.
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