Cluster rocket

[apburner]

Built this one a couple of years ago. I've only flown it on a central CTI G65. Flew great. But looking forward to burning a full load of BP in it in dayton this weekend. With a D12-7 and 7 C6-0's it will be 1.5 newton seconds shy of a G and an average thrust of 78. Should be a fantastic flight with lots of smoke and fire.

 

[soopirV]

Built this one a couple of years ago. I've only flown it on a central CTI G65. Flew great. But looking forward to burning a full load of BP in it in dayton this weekend. With a D12-7 and 7 C6-0's it will be 1.5 newton seconds shy of a G and an average thrust of 78. Should be a fantastic flight with lots of smoke and fire. View attachment 319627

As one who has not attempted many clusters (I've got 2 or 3 LPR birds that are built for it, but sadly remain unflown), how do you ignite that many motors? Are you successful with a clip whip or do you plan to try the more-flashy "flash in the pan" (pun intended)?

 

[AfterBurners]

As one who has not attempted many clusters (I've got 2 or 3 LPR birds that are built for it, but sadly remain unflown), how do you ignite that many motors? Are you successful with a clip whip or do you plan to try the more-flashy "flash in the pan" (pun intended)?

what you need to say if you have 3 engine cluster you just divide the wires and tie them together. You take one wire from each motor and you twist the wires together. You do the same for the remaining wires. So now you have two groups of wires to attach the alligator clips. Make sure you have a good connection with the clips or else they won't ignite.

 

[rstaff3]

I know of a guy who lit 7 motors using Estes (now the old style) by taking scrap wire and extending each lead. It was all twisted together and the joints were taped. I personally have never done over three motors without the old Q2G2s or quickmatch. The launch system makes a difference. A relay launcher with the battery at the pad makes a big difference.

Here is a good reference https://www.narhams.org/library/tech/006-Clustering.pdf

 

[Trident]

Back in the 90s there was a rocket at a HPR launch that flew on a cluster of 60+ D12 motors. I don't recall the exact number,, but it was a spectacular display of fire. I'm pretty sure all motors had Thermalite fuse, which was great for clusters and airstarts. I'm trying to find video.

 

[rstaff3]

I have seen several large clusters like that. Would have to research them now. Boris is our current cluster guru.

 

[rstaff3]

Google Darth Maul's Revenge...132 motors is not too shabby. https://www.darthmaulsrevenge.zapto.org/

 

[TRFfan]

What about 1 G150 and 6 D21's? Can you say shred? :lol:

 

[rstaff3]

Included borrowed photos...included link is dead. This one has 316 D11-P motors https://rocketdungeon.blogspot.com/2008/05/big-rocket-of-day-maxi-d.html

here's another https://www.rocketryforum.com/showt...ter-till-you-ve-seen-this&p=896041#post896041

 

[Incongruent]

What about 1 G150 and 6 D21's? Can you say shred? :lol:

Flight not RSO approved.

 

[RocketflierVB]

At LDRS in 2003 he flew the Maxi-D. Came out to be an M motor. 1330 or a 3330, can't remember...

 

[RocketflierVB]

This is my BSD Horizon modified to fly on (7) G-80's

View attachment 319702

 

[rstaff3]

View attachment 319701

This is my BSD Horizon modified to fly on (7) G-80's

View attachment 319702

Nice! I have only clustered two AP motors. Wimpy.

 

[apburner]

What about 1 G150 and 6 D21's? Can you say shred? :lol:

LOL. I was thinking a G150 and 7 D21's since it is a 24mm central and 7 18mm. Now that would shread

 

[apburner]

I am going to go old school and flash pan. I have clustered a central 18 and 7 13's several; time without a single misfire of any-kind

 

[Trident]

Google Darth Maul's Revenge...132 motors is not too shabby. https://www.darthmaulsrevenge.zapto.org/

Between this one and the Maxi-D, I'm not even going to try to find the one I mentioned ... child's play.

 

[RocketflierVB]

View attachment 319800

Here is another interesting design...pulled from the internet...Andrew from Voodoo Rocketry

[video=youtube;S6acoiFkFG8]https://www.youtube.com/watch?v=S6acoiFkFG8[/video]

 

[rharshberger]

View attachment 319799 View attachment 319800

Here is another interesting design...pulled for the internet...Andrew from Voodoo Rocketry

[video=youtube;S6acoiFkFG8]https://www.youtube.com/watch?v=S6acoiFkFG8[/video]

Beautiful rocket, was it fins ripping off or assymetrical thrust that got it, lookex to me like the fins came off. What motors?