FlyingMonkey
Well-Known Member
- Joined
- Jun 19, 2016
- Messages
- 80
- Reaction score
- 20
The Bertha has been our favorite rocket so far. So I started with that but tried my hand at a few new things. Probably too many at one time.
TTW basswood to a 29mm mount
Clear payload section
Apogee strap on boosters
At the last minute I threw on a nose cone that matched the boosters.
Nomex chute protector.
I Sim'd this thing with a Bertha nose cone when I had a working pc about a year ago. The rest I just winged.
First launch was on a C6-5. That's a great motor for a standard Bertha but it turns out I added way more weight than I anticipated per the sim. It launched ok but the delay was too long. It lawn darted.
I quickly cut the visibly damaged section off (about 1.5"), removed the payload section, and strapped the boosters on.
C6-5, A8, A8.
Jumped off the rod quick! But 1 booster out performed. The rocket took a turn, boosters peeled away correctly, but rocket was once again too low for a proper recovery. The ejection charge clearly lit but it didn't pop the nose cone. This time it landed like a plane. With FAR more damage.
No wind on either launch.
I should have started with more motor in the main. I probably should have larger fins for stability in case of uneven power distribution. I can't help but wonder if the nomex was used wrong and caused the lack of ejection. I should have weighed it.
Love to hear your thoughts. Feel free to tell me what else I did wrong and what I should change next time around.
Sim is currently not an option.
TTW basswood to a 29mm mount
Clear payload section
Apogee strap on boosters
At the last minute I threw on a nose cone that matched the boosters.
Nomex chute protector.
I Sim'd this thing with a Bertha nose cone when I had a working pc about a year ago. The rest I just winged.
First launch was on a C6-5. That's a great motor for a standard Bertha but it turns out I added way more weight than I anticipated per the sim. It launched ok but the delay was too long. It lawn darted.
I quickly cut the visibly damaged section off (about 1.5"), removed the payload section, and strapped the boosters on.
C6-5, A8, A8.
Jumped off the rod quick! But 1 booster out performed. The rocket took a turn, boosters peeled away correctly, but rocket was once again too low for a proper recovery. The ejection charge clearly lit but it didn't pop the nose cone. This time it landed like a plane. With FAR more damage.
No wind on either launch.
I should have started with more motor in the main. I probably should have larger fins for stability in case of uneven power distribution. I can't help but wonder if the nomex was used wrong and caused the lack of ejection. I should have weighed it.
Love to hear your thoughts. Feel free to tell me what else I did wrong and what I should change next time around.
Sim is currently not an option.