James Keller
Well-Known Member
Hey all,
As a disclaimer this is not my first HPR rocket build. I have built 3 Level 2 rockets with my school that I just graduated from. However I couldn't get certified with the program. I also know this is way over complicated and is way over the top for a level 1 certification rocket, but in my opinion that's what makes it fun. Now that we got that out of the way here are some goals for this rocket.
Goals
RasAero Form 2 (K627)
Current Progress
Currently I have an airframe curing and am pulling it off the mandrel tomorrow. I also have carbon fiber laid up on g10 tomorrow I will cut them out on my CNC router. After that I think I will move onto the nosecone as I am pretty sure I will need a few tries at that. I also need to make a new fin beveling jig. I might instead try to use my CNC router to bevel the fins. Any input on that would be helpful.
As a disclaimer this is not my first HPR rocket build. I have built 3 Level 2 rockets with my school that I just graduated from. However I couldn't get certified with the program. I also know this is way over complicated and is way over the top for a level 1 certification rocket, but in my opinion that's what makes it fun. Now that we got that out of the way here are some goals for this rocket.
Goals
- Break personal altitude record and speed record (15k ft and Mach 1.2)
- Have a camera on board for at least the test flights and cert flights
- Minimum Diameter Build
- Certify Level 1 and 2
- 2 "Forms" of the rocket will be made
- Form one will include 2 CF airframe sections a fiberglass coupler and a fiberglass nosecone. This is the version I will be using to certify with. The coupler will house the camera. While the nosecone houses the electronics and main chute.
- Motor- This will be flown on a initially on a Aerotech I140 SU motor for L1 Cert, which sims to just over 6K ft and Mach .83. Then eventually on an L2 motor for Cert.
- Form two will get rid of the upper airframe and will be flown without the camera. That way I can squeeze the most altitude and velocity out of it.
- Motor- This will eventually be flown on a Loki K627 which sims to 25k ft and Mach 2.75 however I will fly it on a bunch of smaller motors before this.
- Structure
- 3 wrap .05 CF
- 3 Fins .0625 G10 with 1 layer of CF then 1 Layer tip to tip
- Fiberglass NC 5:1 VK using Robopups technique with a total length of 12in with metal tip
- Electronics
- Eggtimer Quasar in NC for both telemetry and chute ejection
- 300mah 2s lipo (I know Cris recommends a 500+mah battery but I will be using a switch and turning it on right before the rocket fires)
- Featherweight Magnetic Switch
- Runcam Thumb as a camera
- Recovery
- 24in main TF chute, and a 9in chute for the drogue(subject to change)
- Main will be stored in nosecone and drogue will be stored in the airframe
- 550lbs Kevlar
- Sim and CAD
RasAero Form 2 (K627)
Current Progress
Currently I have an airframe curing and am pulling it off the mandrel tomorrow. I also have carbon fiber laid up on g10 tomorrow I will cut them out on my CNC router. After that I think I will move onto the nosecone as I am pretty sure I will need a few tries at that. I also need to make a new fin beveling jig. I might instead try to use my CNC router to bevel the fins. Any input on that would be helpful.