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  #381  
Old 12-25-2008, 12:53 PM
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  #382  
Old 12-25-2008, 02:22 PM
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Exclamation New Design -- Larkspur
This one just jumped off the board and flew in the simulations without a hitch. This is one for the prototype stage.

Length: 26.63"
Diameter: 1.04" (ST-10)
Fin Span: 7.54"
Weight: 2.92 oz

Averaged summary after 10 flights:

C6-5......652'......Dv 4 - 12 FPS......48" x 3/16" rod

Enjoy!
Attached Thumbnails
Click image for larger version Name: Larkspur V9 2D.jpg Views: 84 Size: 35.5 KB  Click image for larger version Name: Larkspur V9 3D.jpg Views: 122 Size: 53.5 KB  
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File Type: rkt Larkspur V9.rkt (176.4 KB, 103 views)
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  #383  
Old 12-25-2008, 03:11 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Design -- Nightwind
One of the earlier sketches finally simulated.

Length: 27.05"
Diameter: 0.908" (ST-8)
Fin Span: 8.91"
Weight: 1.43 oz



A8-3.......216'......Dv 5 FPS.......36" x 1/8" rod
B6-6.......585'......Dv 28 FPS......36" x 1/8" rod
C6-7......1346'......Dv 8 FPS.......36" x 1/8" rod*



Enjoy!

*Note: I think this altitude figure is a bit optimistic. It's going to take building one and watching it fly before I'm convinced...

Addendum: This design has most of the weight off to one side (top) of the thrust line, so there needs to be some offset in the motor tube. I will try to figure out what the angle needs to be, and try to create some centering rings to build this in.
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Click image for larger version Name: Nightwind 2D.jpg Views: 93 Size: 30.2 KB  Click image for larger version Name: Nightwind 3D.jpg Views: 112 Size: 31.4 KB  
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File Type: rkt Nightwind.rkt (85.2 KB, 88 views)
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Last edited by CPMcGraw : 12-26-2008 at 06:32 PM. Reason: Real rocket science at work...
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  #384  
Old 12-25-2008, 03:25 PM
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  #385  
Old 12-25-2008, 07:57 PM
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What's going to keep Nightwind from doing the St. Louis Arch maneuver? There's a lot of off-center weight there...
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  #386  
Old 12-25-2008, 09:43 PM
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Quote:
Originally Posted by Solomoriah
What's going to keep Nightwind from doing the St. Louis Arch maneuver? There's a lot of off-center weight there...


It will probably be a combination of additional fin area to the opposite side, and some thrust vectoring in the motor tube. It's not going to fly as intended the way it comes fresh out of RS.

That's the drawback to these asymetrical models. I am told, however, that RockSim Pro is capable of handling this type of calculation. I'm just not willing to spend $1000 for it.
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  #387  
Old 12-26-2008, 12:31 AM
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Exclamation New Design -- Terra Nova Probe
This is another from the 30 sketches that has now been worked up in R9.

Length: 28.70"
Diameter: 1.04" (ST-10)
Fin Span: 7.15"
Weight: 2.11 oz

Averaged from 10 simulation runs:

C6-3......489'......Dv 13-14 FPS......36" x 1/8" rod

Enjoy!
Attached Thumbnails
Click image for larger version Name: Terra Nova Probe V9 3D.jpg Views: 132 Size: 39.1 KB  Click image for larger version Name: Terra Nova Probe V9 2D.jpg Views: 102 Size: 27.6 KB  
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File Type: rkt Terra Nova Probe V9.rkt (166.8 KB, 131 views)
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  #388  
Old 12-26-2008, 04:39 PM
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Exclamation New Design -- Stardust
This one is supposed to be a Schoolyard Sounder, but the performance is a bit higher than anticipated. It has high Dv numbers, so use the streamer I'm calling out.

Length: 21.125"
Diameter: 1.04" (BC-760)
Fin Span: 4.26"
Weight: 1.07 oz


A10-0T / A3-4T..........868'......Dv 45 FPS......36" x 1/8" rod
A10-0T / 1/2 A3-4T......586'......Dv 25 FPS......36" x 1/8" rod


Enjoy!
Attached Thumbnails
Click image for larger version Name: Stardust 2D.jpg Views: 92 Size: 34.7 KB  Click image for larger version Name: Stardust 3D.jpg Views: 124 Size: 16.4 KB  
Attached Files
File Type: rkt Stardust V9.rkt (87.8 KB, 99 views)
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  #389  
Old 12-26-2008, 05:09 PM
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  #390  
Old 12-26-2008, 06:22 PM
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Exclamation Revised Plan -- Rogue Star
Here's one from the beginning of the Designer's Studio thread. The original idea was for the small fins at the rear to be mounted on the pods, canted outward. RockSim 8 could not handle this, but 9 can. It still doesn't know how to render the French Curve scallop on the large body tube, sad to say.

R9 spotted a stability issue with this version that did not show up on the original. The revised plan should be OK.

Length: 23.30"
Diameter: 1.34" (ST-13)
Fin Span: 11.44"
Weight: 1.97 oz


B4-4......330'......Dv 14 FPS.......36" x 1/8" rod
B6-4......338'......Dv 8 FPS........36" x 1/8" rod
C6-5......772'......Dv 6-9 FPS......36" x 1/8" rod


Enjoy!
Attached Thumbnails
Click image for larger version Name: Rogue Star V9 2D.jpg Views: 72 Size: 35.3 KB  Click image for larger version Name: Rogue Star V9 3D.jpg Views: 103 Size: 50.7 KB  
Attached Files
File Type: rkt Rogue Star V9.rkt (119.1 KB, 87 views)
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