I feel this* should be standard for an L2. And something you've come to be comfortable with while L1.... add Avionics to it for work up to my L3 Cert. I look forward to any comments.
I believe he means the backing material; the 'stuff' the screws from the flange screw into..I've used some flange mounts but not sure what you are asking regarding minimum thickness of what?
Tee nuts or even regular hex nuts behind the centering ring are all you need for a flange mount retainer. Or just use the included inserts and put some epoxy filets on the part that protrudes on the backside. No need to add a piece of backing material (nor does it hurt anything).If I am not mistaken the Aero pack flange retainers come with threaded inserts for the screws. 1/8th FG CR is not enough for these to lock into, IMHO. I have used 1/4" ply behind the CR as a backer.
It used to be okay to reuse the same rocket for L2 and L3, but now, in both NAR and Tripoli you must already be L2 and get Design approval from your TAPs or L3CC before starting construction on your L3 rocket.Hello everyone, I am going to be building the Punisher 4" by Wildman for my L2 Cert flight then add Avionics to it for work up to my L3 Cert. I look forward to any comments. Thanks in advance.
When I get the printed sled I will mount it then position the vent band. One of the three vent holes will act as a access point for a screwdriver. The software I used to sketch with did have a decent symbol library. I am using a rotary switch.As far as your Alt layout, there are so many ways to do this. Probably none are wrong. Battery on opposite side from Alt's, I have used both single and double threaded rod, on this size rocket, I would use double. Use welded or forged eyebolts. Should be plenty of room for terminal blocks on bulkheads along with 2 charge wells each side. Do not use brass shell casings. I see a switch in your pics. How are you going to access it?
Steve, since starting this thread I was informed by my Chapter President of this. However, the rocket I chose performs in both L2 and L3 motor ranges. This is one of the reasons I chose it.It used to be okay to reuse the same rocket for L2 and L3, but now, in both NAR and Tripoli you must already be L2 and get Design approval from your TAPs or L3CC before starting construction on your L3 rocket.
From the Tripoli website:
Prerequisites for attempting Level 3 certification:
- The candidate must have successfully completed their Level 2 certification BEFORE they can commence their Level 3 certification process.
- The candidate will also need to demonstrate proficiency in flying Level 2 rockets with electronic recovery.
- Prior to beginning construction of an L3 certification project, your project design must be approved by your TAP members.
- The candidate needs to successfully design, build, fly and recover a rocket using a certified HPR motor in the M-O impulse range.
The way I looked at it was..."Oh darn I have to build yet another rocket for my L3."Under the current rules, it’s not generally allowed for a person to use the same rocket for both certifications: L2 and L3. The philosophy is that candidates learn different things at each certification level and apply what they have learned to the next certification process, resulting in better rockets at each level.
Your rocket does that in a sense by adding the avionics and dual deployment to the foundation you’re building for L2. I admire what you’re doing. It’s smart.
Start talking to your TAPs now to see how you can leverage what you’re doing.
I am building another rocket that will be done in the spring due to material costs but size restrictions prevent M or higher motors.The way I looked at it was..."Oh darn I have to build yet another rocket for my L3."
I don't know about everyone else but for me building is half the fun in this hobby. I mean it would have been kinda cool I guess doing one rocket for both L2 and L3 but that's not my cup-o-tea.
Anyways, this is looking like a nice thread so far. Keep the updates coming.