shouldnoteatindat Posted December 15, 2013 Posted December 15, 2013 is there anyone on here making 24" shells if so can you post vids 1
Mumbles Posted December 15, 2013 Posted December 15, 2013 I'm moving this to a more appropriate section. Rocketry doesn't really apply without some NASA booster underneath. There might be a couple of members here who have been involved in making them. I know a few others who have done it as well who likely aren't members. You'll be able to find videos online of some Japanese ones being shot. Other than that, there really isn't anything special about their construction that isn't done with smaller, more frequently built shells. I'd suggest using a 3 piece assembly method on something this large. That technique is described in Shimizu in the warimono section.
leedrill Posted December 16, 2013 Posted December 16, 2013 well said mumbles 24" in the rocketry section is a little ludicrous but 24" shell alone is pretty massive id have to say i would not want to paste a 12" let alone a monster like one of these id almost need 4 hands to join the filled hemis together and for a 3 petal 24" is a hell of a lot of stars and experiments to get the burn times right to how you want them {in saying that no matter how you put it together it would hold enough stars to be impressive no matter of the configuration but to see the 12" shell get shot at pgi on a large no. of 3lb motors a 24" shell would really take some nasa solid booster motors to get it up there
LambentPyro Posted December 16, 2013 Posted December 16, 2013 (edited) Do not know anyone on here, but this YouTube user films outstanding Japanese shells, check them out. I think he has a collection of 24" inchers. http://www.youtube.com/user/hiramu55bocaboca Edit: Here is a great video Edited December 16, 2013 by LambentPyro
Arthur Posted December 16, 2013 Posted December 16, 2013 With 16 shells breaking at 1000ft plus, I'd expect 24" shells to break higher. In aviation friendly countries this definitely counts as conflicting traffic. Also there is a video (youtube I thnk) of the crater where a Japanese permanent mortar was destroyed by a 24" shell going off in the tube. Most likely shoot sites wouldn't want that much earth moved that quickly.
Niladmirari Posted December 19, 2013 Posted December 19, 2013 shouldnoteatindat you have a 24-inch mortar? 1
Niladmirari Posted December 22, 2013 Posted December 22, 2013 (edited) If the Shells in Shell, which dealt strengthening? As far weaker than the chrysanthemum? Edited December 22, 2013 by Niladmirari
MrB Posted December 22, 2013 Posted December 22, 2013 What amazes me, is the amount of work, and skill that goes in to a huge shell like these 24", and they still just refuse to come out nice and symmetrical in the sky. The structural challenges to make them survive the launch alone is incredible, i mean the thing ways in at 65+ kilos. It might be nice and round when it goes IN to the mortar, but all bets are of when it's going back out... So, when are we all joining together for the (re)creation of the 48" shell? And who's sewer-pipe will we use to launch it from? Those things hit real close to half a ton, so i'd suggest we make it a joint effort...B!
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