The Magnum Load's fins are too big and the wrong shape. And the fin can looks like it's smaller in diameter than the main part of the rocket (or am I misreading this picture?) Zoom in on the fin can.
How about a scratch build "Beneath The Planet Of The Apes Rocket"....
or just buy the Estes Magnum load cut the body tube be shorter and paint it gold!
https://www.walmart.com/ip/Estes-Hunter-s-Choice-Model-Rocket-Launch-Set/38578739
or just buy the Estes Magnum load cut the body tube be shorter and paint it gold!
https://www.walmart.com/ip/Estes-Hunter-s-Choice-Model-Rocket-Launch-Set/38578739
And the movie rocket looks more like a bullet than the kit that is supposed to look like one.
I just can't get over that solid pine nose cone not having enough weight. Maybe I'll gin up a design file myself and we can compare.
So I tried that. I upscaled the fins by 20% (so 44% by area) and that almost did it. Then I lengthened the body tube by 20%, which got me to over 1 caliber. An I still think it looms right enough to me.
Anyway, it's yours to build, so whatever way you want.
Are you sure you want to print that? It would be lighter if you use bent balsa. You could print a two piece form to sandwich moistened balsa to make the blades all come out the same.
Cool concept! To reduce weight maybe just get rid of the outer ring altogether?
I feel like the outer ring is important to hold the fins on, but I could be wrong on that. But since I don't really know and I like the look, I'm going to keep it. I might rescale a bit to match the Basement Balsa (tm) supply.
Recruit. The Recruit was flown with a vacuum adapter nozzle that makes a great cone fin. I’ve flown it a single stage test - haven’t gotten to the Terrier Recruit yet. This year’s flights got taken up with Nike Tomahawk and Terrier Malemute flights.@Charles_McG has a finless upperstage on one of his Nike stagers. Is that the Deacon or the Recruit?
I like the look to... kind of like the rotor on a turbo charger.
But since you are using the ring... you should be able to make those fins really, really thin.
How do you calculate that?In theory* if this thing hits 200-300 ft/s on boost, we'd be looking at 3600+ RPM.
Scroll down to the bottom of the page and look at the “twisted” rocket.Looking like a turbo isn't entirely accidental... My theory (and I don't know if it's a good theory) is that the rounder leading edge will help reduce the chances of aiflow separating along the back side when the angle of attack is off nominal. And honestly, the angle of attack is always going to be off nominal. Paranoia about flow separation comes from working mainly with boats since water is a lot less forgiving than air in that regard.
In theory* if this thing hits 200-300 ft/s on boost, we'd be looking at 3600+ RPM. I don't think we'll really get there, but it'll be interesting to see how high it does go and how hard it spins.
* In theory, there's no difference between theory and practice.
How do you calculate that?
So, does this thing have a launch lug, rail guide, whatever somewhere? It's not clear to me how it gets off the pad...
Also, don't rapidly spinning objects that are longer than they are wide have a tendency to adjust their spin access so they're tumbling the long way?
Looking like a turbo isn't entirely accidental... My theory (and I don't know if it's a good theory) is that the rounder leading edge will help reduce the chances of aiflow separating along the back side when the angle of attack is off nominal. And honestly, the angle of attack is always going to be off nominal. Paranoia about flow separation comes from working mainly with boats since water is a lot less forgiving than air in that regard.
In theory* if this thing hits 200-300 ft/s on boost, we'd be looking at 3600+ RPM. I don't think we'll really get there, but it'll be interesting to see how high it does go and how hard it spins.
* In theory, there's no difference between theory and practice.
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