14bis
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- Joined
- May 3, 2018
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Hello everyone! Long time lurker here.
I finally have some time on my hands to make my first post here.
This is a scratch build for a homemade rocket that has flown with great success in the past.
As a bit of back story, I'm from Brazil, and I started my journey into rocketry in 2014, when I joined my uni's rocketry club. I was a part of projects from low, mid and high power rockets. In 2016 I was able to fly at FAR and IREC as an exchange student, and in 2017 I was the team lead for my uni's IREC team.
I know I have a lot to learn and my objective with this post is to shed some lights on the design techniques one could use when short on resources (rocketry is growing here in Brazil, but we don't have easy access to rocketry stores).
A couple of observations:
1) This rocket uses a sugar motor (KNSU), however it's not on the scope of this post to explain it's design. I'll only use it's specs. This motor was throughly tested and performs within it's designed specs. I will not discuss how to make this motor as it belongs in the [Restricted[Research section of this forum.
2) The parachute deployment signal will come from a stratolloger, this is the only part that is not homemade. I used arduino based altimeters in the past, but I don't think they are as reliable as commercial ones.
3) The rocket will have roll control. Once again, this is not in the scope of this post. I can comment on this, but there is a lot to be learned from this post: https://www.rocketryforum.com/showthread.php?35679-Active-roll-control-system-Success
Objectives:
This is my first time doing all of the rocket by myself. I will definitely have some problems along this build that I'd like to discuss with everyone here. Especially with regards to the recovery, sewing the parachute, recovery harness, etc.
I will also like to discuss some manufacturing techniques, as nose cone construction.
Meet the rocket:
NAME: TBD
Motor: J class, 1000 Ns (224.8 lbf-s)
Predicted apogee: 1000 m (3280 ft)
LO Mass: 5.4 kg (11.9 lb)
Length: 1.80 m (5.9 ft)
Diameter: 75 mm (3")
Below are pictures of the Open Rocket simulation. The .ork simulation may be run with a similar total impulse/mass motor.
Let's go!
View attachment PVC.ork
I finally have some time on my hands to make my first post here.
This is a scratch build for a homemade rocket that has flown with great success in the past.
As a bit of back story, I'm from Brazil, and I started my journey into rocketry in 2014, when I joined my uni's rocketry club. I was a part of projects from low, mid and high power rockets. In 2016 I was able to fly at FAR and IREC as an exchange student, and in 2017 I was the team lead for my uni's IREC team.
I know I have a lot to learn and my objective with this post is to shed some lights on the design techniques one could use when short on resources (rocketry is growing here in Brazil, but we don't have easy access to rocketry stores).
A couple of observations:
1) This rocket uses a sugar motor (KNSU), however it's not on the scope of this post to explain it's design. I'll only use it's specs. This motor was throughly tested and performs within it's designed specs. I will not discuss how to make this motor as it belongs in the [Restricted[Research section of this forum.
2) The parachute deployment signal will come from a stratolloger, this is the only part that is not homemade. I used arduino based altimeters in the past, but I don't think they are as reliable as commercial ones.
3) The rocket will have roll control. Once again, this is not in the scope of this post. I can comment on this, but there is a lot to be learned from this post: https://www.rocketryforum.com/showthread.php?35679-Active-roll-control-system-Success
Objectives:
This is my first time doing all of the rocket by myself. I will definitely have some problems along this build that I'd like to discuss with everyone here. Especially with regards to the recovery, sewing the parachute, recovery harness, etc.
I will also like to discuss some manufacturing techniques, as nose cone construction.
Meet the rocket:
NAME: TBD
Motor: J class, 1000 Ns (224.8 lbf-s)
Predicted apogee: 1000 m (3280 ft)
LO Mass: 5.4 kg (11.9 lb)
Length: 1.80 m (5.9 ft)
Diameter: 75 mm (3")
Below are pictures of the Open Rocket simulation. The .ork simulation may be run with a similar total impulse/mass motor.
Let's go!
View attachment PVC.ork