#21
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Doug |
#22
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Whoa! That's cool! That looks like something that needs to be drawn up as a mini-plan set for BARCLONE, Doug!
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Scott D. Hansen Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe! Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies! Ye Olde Rocket Forum WOOSH NAR Section #558 |
#23
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I agree, Scott & Doug. Seeing how the model has separate upper and lower body tubes, you could put a bulkhead in that upper section and call it a Super Ranger. That would allow for useful-load ballast instead of dead-weight ballast... Have you tried this package on RockSim yet?
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Craig McGraw BARCLONE Rocketry -- http://barclone.rocketshoppe.com BARCLONE Blogsite -- http://barclone.wordpress.com BARCLONE Forum -- BARCLONE Forum BARs helping BARs SAM 0044 AMA 352635 |
#24
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Fortunately, with the long moment arm, a little noseweight goes a long way. I thought about a payload section, but elected to just glue the nosecone in and fill the seam. There's no bulkhead forward of the coupler, so much of the recovery harness can be stuffed in there in case the aft section doesn't have enough space. Instead of using the stock gussets (Wouldn't they be stronger with the grain running radially instead of parallel to the BT?) I applied FNF fillets then glassed over them with strips of 4 oz cloth. The fins have a layer of tissue and dope. They're quite rigid near the glass - rock solid in fact - but still kinda flimsy near the trailing ends so I expect to put another coat of tissue and dope on. BTW, the drawing for the MMT is here: http://home.flash.net/~samily/stuff/BT-80Clusters.pdf The only variation is that two of the BT-5's ended up tight against the center tube while the other two BT-5's are gapped slightly farther outboard. (Reality meets math :) Doug |
#25
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Well..after chasing a ESTES fin guide on Ebay up to $44 I have now decided to build a jig..this doesn't appear to be rocket science...I've got a bit of MDF, a few pieces of hardboard and a router......I've got a rough idea....anyone have a plan?
Great learning experience trying to fill a V2 vac molded fin with epoxy/micro ballons....I'm going to straight epoxy so it will flow in a little easier. Oh well live and learn. |
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