Structures @ jake
How do you cut the bad ends? dremel hand saw - Vacuum and respirators clear our construct when cutting/post processing
How does the 60 angle work? Jake had a boom answer
Was paint included in any mass estimates? no, it won't be significant. We can compare before and after - do calcs for sims
Are you worried about outside surface finish? Yes
Why did you chose 4 layers not 3? Cuz the sidewinder is like that and its is a strength thing
Tube 1 and 2 are both fiber glass? Yes
How will you handle transitions? the toe is a bigger material we are still problem solving. Maybe a transition tube
How much thicker is it? 10th -maybe wood putty
How did you sand in the past? Palm sander and hand sanding final coat of epoxy - wet sanding, spray bottle
Do you do a final coat? uv sealant and clear coat
Does the smoke from the laser dangerous? just don't breath it
Why is this better than a thinner bulkhead? There is less surface area for epoxy
These are not going to break right? No
Are you going to redo the FEA for irec? Yes -Redo FEA
Did you consider the forces of a pressurized bay on the new bulk head? No - look into
Can u put the centering rings on the laser? Perhaps - look into thinner and doing on laser
Is the jig to hold the fins designed? Mike design needs to be printed
How are the fins cut? the crushinator- it can be done on the router if need be
What is onyx? nylon carbo fiber mixture
are you planning of sealing the edges of the carbon fiber? Yes and the tip to tip layup will cover it
Irec says melting is bad how to mitigate? use a torch and test to see what it looks like could move the motor down or boat tail down
The FR means it doesn't burn not melt? We will test a move forward
When is this going to come in and tested? Part is in and will be tested - test onyx part
Are you considered the rail guides could e damaged...? Nope. No slides in FDR for rail guides - look into that!! Design rev?
IN the future more material testing and research
Was the length problem resolved? Yes
how is the boat tail connected? it is bolted to the thrust plate
Plans to do coupler tubes compression testing? no but should be fine
There are holes in the motor retainer are for what? they go through the boat tail, into thrust plat, and the boat tail is holding the motor in
Have you done any cals on backward motion pulling into the thrust plate? in the past the motor retainer has been an issue -NEED TO DO A ANALYSIS OF MOTOR RETENTION to ensure it is secure
Avionics Will Merges (RIT Student) Yevgeniy Gorbachev (RIT Student)
What epoxy? rocket epoxy
No bolts? No load bearing bolts are you worried about it shaking apart? no cuz epoxy
How is the top tube attached? It is just laying
Do the holes in the airframe need to be precis? yes... there is a 3d printed jig that will place them - check with airframe that this is good and with their timeline
Petg is good? should be - look into ABS can do at construct now
Order Parts - order stuff
are we planning any testing on the signal with the fiberglass tube? wasn't but will - test fiber glass rf signal
Umbilical Jim Heaney (RIT Student)
How easy is it to make irec happy about the components? Yes very easy
Are you worried about some connector type? Yes but working on it - ensure connector safety and irec is happy with Avionics team
How will this disconnect from the rocket? hold on
Can we make 2 versions? yes -Look into more stuff
Has this been integrated with the the avionics bay CAD? Not yet, the shape of the cover will change with IREC rules. Holes have already been confirmed - Add in to cad with rules tbd
How do we assemble this in the bay? Wires go through before bolted on and wire harness that comes through hole in - Check with avionics
How do we get the the screws inside? Special printer that can but stop and put bolts in mid print. MethodX
Have you reached out to IREC? not yet waiting for this - Let team know when you send it out
What are you arguments for using xt30? Ergonomic considerations really and keying - Let team know
How far from the rocket is the battery form the rocket? 10-15 ft
Are there concerns on the vibrations on the xt30? They do not have any active lock but needs high acceleration to remove them and orientation on the board
what's the voltage drop to the flight computers when the umbilical disconnects? any risk of browning out right off the rail? - when the umbilical disconnects it drops by 12v to reduce this shock we can add capacitors but optimality need voltage regulator and 12-7 volts is in operating so it should be fine. -Double check this please
Is esera okay with battery near the pad? We need to talk to them about this but we can extend distance if need be - talk with esera