#51
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That cone is becoming quite the workhorse out west.
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Bill Eichelberger NAR 79563 http://wallyum.blogspot.com/ I miss being SAM 0058 Build floor: Estes - Low Boom SST Semroc - Marauder, Shrike, SST Shuttle In paint: Canaroc - Starfighter Scorpion Centuri - Mini Dactyl Estes - F-22 Air Superiority Fighter, Multi-Roc, Solar Sailer II, Xarconian Cruiser Semroc - Cyber III Ready to fly: Estes - Solar Sailer II Semroc - Earmark |
#52
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I'd be interested in seeing some production numbers from Carl as to how many of these cones he's pulled from the Krellvenator since Jay got him started. The "Tau" series really needed them, and I think there's a few more possibilities with it in the future...
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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 |
#53
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Great Design Jay!
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Yes! We have managed, once again, to squeeze another great design from Jay. Its good to hear from you Buddy and hope all is going well in your neck of the woods . Quote:
I agree Craig. I would really like to see an ST-10 based Tau Cone someday soon. Hint Hint Jay . As for me here in WA the weather really sucks! Still below 50 degrees, snowed again Friday & Saturday so I cannot primer the prototypes yet. I am waiting to post pre-testflight photo's after at least one coat of primer is on. Pre-testflight photo's just in case some don't come back in one piece . Still consumed with starting the build of the Tranquility 9 but still have not started it yet . James Pierson NAR# 77907 |
#54
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A Modest Proposal -- BC-1082
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Dredging up the original file posted on Ye Olde Rocket Forum (YORF) back on 06-08-2006: http://forums.rocketshoppe.com/show...83&postcount=81 ...I have updated it per young Mr. JP's request. The cone section is 7.2" long, while the transition is 1.0" long. The widest point is 1.43", while I'm suggesting a shoulder of 0.75" long. I humbly submit that its designation should be BC-1082. [EDIT] Instead of 10820... I got carried away and added that extra zero, which is used in *body tube lengths.* Please notify Mr. McLawhorn if you feel his most excellent company should make this nose cone available. (Oh, and have him bring the dowels back. Gordon "Sandman" Agnello would probably like that. ) Cheers,
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Jay Goemmer "Centuri Guy"/"Tau Zero" YORF Member 28 Semroc SAM #0029 NAR 86131 "I think about organizing things all the time. Never seems to happen. I find something that piques my interest and I'm off on a quest. Or a Centuri. " --Bill Eichelberger, 02/22/2022 “Centuri fret buzz in an updated form.” Bill “Wallyum” Eichelberger re: Estes Flutter-By 03 Sept 2014 Last edited by CenturiGuy : 04-02-2008 at 09:53 AM. |
#55
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In for a penny, in for a pound...
Jay,
An upscale Andromeda SLS was proposed HERE, so I think another variant would be appropriate. Probably could work it into a 24mm power package (the SLS was 29mm)... If Carl says yes, I'll get one or two and try building this upscale. Of course, this also means I need to upscale the Andromeda fin patterns, which Carl would need to feed into the Krellvenator to produce laser-cut frames; and some new bulkheads, too, for those shrouds...
__________________
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 |
#56
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New Design: Galactic Goblin
I don't know if I have posted this design of not? Cannot find it posted anywhere so here it is. I call it the Galactic Goblin and am posting version 3 of 5 with this design. It looks OK, but is not as stable as I would like it to be. This design really needs an ejection charge of 3 seconds on B motors according to Rocksim for better DV's.
Enjoy and Thanks Again, JP Galactic Goblin (18mm) Launch guide length: 36.0000 In MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY A8-3..................125.45308 Ft.............21.9994 ft/s B4-4..................314.03970 Ft.............18.4159 ft/s B6-4..................320.77789 Ft.............13.9452 ft/s C6-5..................713.53347 Ft.............18.4870 ft/s James Pierson NAR#77907 |
#57
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Interesting images, James. 19 and 14 FPS are not horrible DVs, but if they could be brought down a bit it would make for a not-quite-such-a-nail-biter at chute time... Could the altitude performance be sacrificed for a softer DV? Larger diameter shroud, or larger fins (greater margin)?
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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 |
#58
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Input Appreciated.
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I tried both and they did raise the margin only slightly. Maybe what this design needs is more length and some nose wieght, but it just don't look right any longer. Besides after it's built it will most likely be heavier than RocKsim says, as usual, and be better off with some nose wieght and a 2 second delay just like the Sabre Tooth on a C motor . Thanks for your input Craig, JP. James Pierson NAR# 77907 |
#59
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New Design: Sky Champ
Here is another variation of a Lander I came up with called the Sky Champ. It uses an
BnC-55BE as a nose cone and the main body is shaped by using an BTC-70HZ hollow balsa transition. I cheated the Static Margin reference for this file as I felt the Maximum Frontal Diameter is too much for this short wide design. I also added for extra drag at the bottom of the landing legs some CR-7 kockouts of Carl's .05 cardstock to look like landing pads. I always save these and know I finally ahve a purpose fro them. I don't know how to sim the drag for the landing pads so I will leave it up to Jay to fiqure that out. These pads may just be the thing needed to fix the Neptune Lander CG-CP as well. Enjoy and Thanks Again, JP Sky Champ (18mm) Launch guide length: 36.0000 In MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY 1/2A3T-2..............70.68996 Ft..............4.7838 ft/s. A10T-3................204.79724 Ft.............7.3262 ft/s James Pierson NAR# 77907 . |
#60
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I've GOT to build this one! Great looking design, James! Let me guess (without looking at the RS file), the A3-4T has too high a Dv, or it deploys during the down-swing...
__________________
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 |
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