Finally I am on someboby's list in a good way , at least this time !

Thanks Loretta, JP

James Pierson
NAR# 77907

A burly 24mm design for smoke and noise. The name fits the design, making more noise than a similarly sized model. Croesus was a braggard in his day, only spared from the smoke and flame by Cyrus at the last moment.

Length: 23.20"
Diameter: 1.04" (ST-10 main body)
Fin Span: 7.75"
Weight: 2.92 oz

All motors reach flight velocity in 36", although the C11 and D12 take it to the end of the rod...

C11-5......558'.......Dv 0.5 FPS
D12-7......1168'......Dv 24 FPS
E15-7......2459'......Dv 15 FPS
E6-6.......2782'......Dv 19 FPS

Enjoy!

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Attached Files

King Croesus.rkt (76.1 KB, 97 views)

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CPMcGraw

Good one Craig. I guess that this would be concidered a Mid Power design. Maybe instead of a Schoolyard Sounder it's a Sports Field Special ?

Here is a retro design with a sort of Russian appeal that I call the M-4. Its the typical 18mm motor mount and flies well on B-C motors. Also as usual all Semroc Parts.

Enjoy and Thanks Again, JP

James Pierson
NAR# 77907

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Attached Files

M-4.rkt (61.3 KB, 89 views)

I like it, James. Sometimes it's fun to just step back and whip out a simple design with good to modest performance. And it flies from a standard rod, too. Dress it up with some red stars and your Russian-Retro will be complete...

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Here is another Jet that flies on 13mm motor. The main body is a ST-7 tube and I have named it Mach 9.

Lately I have finished one job , took a week off of work , and started another job only working 40 hrs a week. It is very very nice to have my weekends back after 5 months of 60 hr weeks. Plan on getting some more test flights in soon .


Enjoy and Thanks Again, JP

James Pierson
NAR# 77907

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Attached Files

Mach 9.rkt (85.4 KB, 79 views)

Could you repost the 3D view in different colors? I can't make it out in black-on-black, and I don't have RockSim anymore...

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NAR # 115523
Once upon a better day... SAM #0076
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Solomoriah


Hope this Helps. I have not figured out how to save a file for the fin patterns yet so here are some other views and info.

Mach 9 (13mm)
Launch guide length: 36.0000 In

MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY
[1/2A3T-4].........210.33248 Ft................26.3935 ft/s
[A10T-3].............441.16155 Ft................24.9400 ft/s
A3T-4].................469.95209 Ft................1.1093 ft/s

The Dv's are a littler high but these design always seem to be a little heavier than Rocksim says.

Mach 9 Parts List: All Semroc Parts

--Nose cone Semroc - BC-727 - Balsa Nose Cone, Material: Balsa
Solid Ogive,
--Main Body tube Semroc - ST-790 - Body Tube, Material: Spiral/Glassine
--Wing Fin set - Custom, Material: Balsa 3/32” (2 Qty.)
--Motor Mount Body tube Semroc - ST-520 - Body Tube, Material: Spiral/Glassine
--Engine block Semroc - TB-5 - Thrust Block, Material: Paper
--Tail Fin set - Custom, Material: Balsa 3/32” (2 Qty.)
--Parachute Semroc - CP-12 - 12 in. Plastic Chute, Material: Polyethylene LDPE
--Screw Eye-Large Semroc - SE-12 - Screw Eye-Large
--Shock Cord Semroc - - , Material: 1/8 In. flat elastic 20 inches
--Centering ring Semroc - CR-57 - Centering Ring, Material: **Paper .05 Thickness** (2 Qty.)
--Canopy - Custom, Material: Balsa **3/8 inches thickness**
--Pod tube Semroc - Bt-3 - Semroc Classic, Material: Paper (2 Qty.)
Len: 2.0000 In. Location: 0.0000 In. From the base of Main Body tube
--Launch lug Semroc - LL-115 - Launch Lug, Material: Paper

James Pierson
NAR# 77907

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It's beautiful. But a margin of 0.46 without engines seems a bit unstable to me.

__________________
NAR # 115523
Once upon a better day... SAM #0076
My site: http://rocketry.gonnerman.org

Solomoriah


Solomoriah, in that particular view I move the wing fins forward and at 0 degrees so both fin patterns would be visible for you to see. The actual margin with an A3T-4 loaded is a healthy 1.60 margin with wings in rear location and at 90 degrees.

Also made a mistake on the previous parts list post. The balsa material in the Rocksim file is 1/16 ich material to get a margin of 1.60. Balsa material of 3/32 inch thick can also be used and only drops the margin down to 1.53 margin.

Thanks Again and Enjoy, JP

James Pierson
NAR # 77907

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RockSim has an export option button at the bottom of the fin dialog which saves a pattern as an SVG file, or "Scaleable Vector Graphic". You need Corel Draw (or some other vector-graphic program) to edit it. Photoshop is not capable of reading this or doing anything with it.

It's not 100% accurate, but for most plans, it works reasonably well. Corel Draw, on the other hand, has a steep learning curve as well as some internal bugs when it comes to importing SVG images to work with. There is also one book available for Draw 12, and it's not the most user-friendly or complete; it just happens to be the only book available anywhere. This is what I'm working with now for fin patterns on all future BARCLONE projects, and it's also what Carl uses to prime the Krell laser with.

Not an endorsement of the website, but you might be able to get a copy of Draw 12 here for $50: http://www.everythingoutlet.com/cid/soft-graphic

Note that Carl needs fin pattern files in Draw 10 format, not Draw 12, so anything you send him would need to be saved in the older format...

The book is called "Corel Draw 12 The Official Guide", by Steve Bain. You can get a copy from Amazon for $29.99: http://www.amazon.com/Coreldraw-12-...85663672&sr=8-1

__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
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SAM 0044
AMA 352635