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  #1  
Old 09-14-2007, 02:34 AM
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CPMcGraw CPMcGraw is offline
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Default BARCLONE Designer's Studio 2008

Welcome to BARCLONE's Designer Studio, a thread dedicated to the development of new model rocket designs using classic construction methods, modern materials and software creation tools. All persons interested in designing models are encouraged to participate by posting their work here for others to study and critique, giving you a "peer review" by fellow model builders, flyers, designers, and even manufacturers. Generally speaking, the best review you can receive because it comes from people just like yourself!

BARCLONE was started with the ideal of "BARs Helping BARs", and that ideal is carried forward in this thread. Feel free to submit and post your work here, and listen to the advice offered. Because that's the point -- making the hobby more enjoyable not only for yourself, but for others as well.

The thread is now OPEN.
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  #2  
Old 09-16-2007, 11:39 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Say Cheese

To inaugurate this thread with the first new plan we have the Say Cheese, which as the name implies, is a Camera Ship. It has been trimmed to reach 800' consistently on a D12-5, and is intended to fly the Aiptek Mini Pen like TBZEP uses in his modified Stormcaster.

The starting point for this design is a Screamin' Mimi, with the main tube cut into 12" and 6" lengths. To save weight, I used a simple 0.07" thick matteboard bulkhead and a tube coupler instead of a solid balsa bulkhead to join the payload body to the booster body.

Fins are standard 1/8" thick balsa.

A 48" x 3/16" rod is needed to reach a safe flight speed. The camera is listed as 45g, and I allowed 50g to account for the needed padding and support. With that much mass to move, even the reliable D12 can't push hard enough to get it off in less than 38".

Length: 25.75"
Diameter: 1.637" (BT-60)
Fin Span: 4.13"
Weight (with camera): 5 oz
Weight (without camera): 3.25 oz

If you fly the rocket without ballast, you will need to reef the parachute shrouds, as the Dv is above 25 FPS. The unballasted altitude is over 1030', or 330' better than with the camera. Use the 48" rod for unballasted flights as well.

Enjoy! And, if you build it before I do, you're obligated to share some in-flight videos!!!
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  #3  
Old 09-18-2007, 09:29 PM
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CPMcGraw CPMcGraw is offline
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Exclamation New Plan -- Sky Lance

Ahem...

Another reuse of an old name...

This is a 13mm cluster ship, probably Skill Level 3 for difficulty. It requires some very careful surgery on a BC-1032 (used as the tailcone) to fit the ST-5 tubes through without breaking the remaining balsa. Also, you will need to cut and trim the ST-5 tube where it overlaps the ST-10. The gaps must be sealed completely, as the deployment pressurization would escape otherwise. The ST-10 does not need to be slotted. Study the 2D and 3D images carefully to see what I'm trying to describe (poorly) in words.

Note the override in the mass of the tailcone, reduced about 30%. The final piece will likely be even less mass than this, considering what has to be removed to fit the tubes. This is critical to the simulation, as it has much higher Dv numbers if left "stock".

Length: 18.70"
Diameter: 1.04" (ST-10)
Fin Span: 5.44"
Weight: 2.13 oz

(2) 1/2 A3-2T......120'......Dv 18 FPS.......23" guide length required
(2) A3-4T..........383'......Dv 3-7 FPS......33" guide length required

Don't try this with the 1/4 A3 as it never gets above 35'. The A10-3T is also not recommended as the Dv is above 30 FPS.

Enjoy!
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  #4  
Old 09-19-2007, 01:54 AM
James Pierson James Pierson is offline
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Lightbulb New Design: Solar Sailor III

Another recycled name here as well .

Here is another design I decided to call the Solar Sailor III after its two predecessors. This design will carry a 24 inch chute as well. The Dv's are a little high for the B4 and B6 so I reccomend flying this design on the C6-5.

Enjoy and Thanks Again, JP

James Pierson
NAR# 77907

Solar Sailor III (18mm)
Launch guide length: 48.0000 In

MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY
B4-4..................205.06955 Ft............30.0259 ft/s
B6-4..................229.79921 Ft............25.3781 ft/s
C6-5..................640.47572 Ft............8.5704 ft/s
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  #5  
Old 12-27-2008, 09:28 AM
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SierraCharlie SierraCharlie is offline
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Thumbs up Cheese Grater

[QUOTE=CPMcGraw]To inaugurate this thread with the first new plan we have the Say Cheese, which as the name implies, is a Camera Ship. It has been trimmed to reach 800' consistently on a D12-5, and is intended to fly the Aiptek Mini Pen like TBZEP uses in his modified Stormcaster.

QUOTE]
Nice looking bird ! I will be building another camera ship pretty soon. I had been using a scratchbuilt BT60 IRIS for my Oracle camera until about two weeks ago when my shock cord and the Kevlar separated at ejection. (yes, I know, glue those knots!) I built it with 24mm mount for D & E engines with 3/32 TTW ply fins. With the IRIS nosecone and "E" engines the CG was a bit aft, requiring ballast. The Oracle camera moved things up to about 1 calibre stability. I was getting about 800' ft with a D12-5, which was what I was using the day of the ill-fated launch. The video camera parachuted to safety, booster continued on a beautiful ballistic decent with the sun glinting off it's fins teminating with a sickening "pop" as it was eaten by a tree.

http://www.youtube.com/watch?v=8n_IiVa1UEk




Again, glue those knots!
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Last edited by SierraCharlie : 12-27-2008 at 10:57 PM.
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  #6  
Old 12-27-2008, 01:32 PM
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CPMcGraw CPMcGraw is offline
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Default

Quote:
Originally Posted by SierraCharlie
[QUOTE=CPMcGraw]To inaugurate this thread with the first new plan we have the Say Cheese, which as the name implies, is a Camera Ship. It has been trimmed to reach 800' consistently on a D12-5, and is intended to fly the Aiptek Mini Pen like TBZEP uses in his modified Stormcaster.

QUOTE]
Nice looking bird ! I will be building another camera ship pretty soon. I had been using a scratchbuilt BT60 IRIS for my Oracle camera until about two weeks ago when my shock cord and the Kevlar separated at ejection. (yes, I know, glue those knots!) I built it with 24mm mount for D & E engines with 3/32 TTW ply fins. With the IRIS nosecone and "E" engines the CG was a bit aft, requiring ballast. The Oracle camera moved things up to about 1 calibre stability. I was getting about 800' ft with a D13, which was what I was using the day of the ill-fated launch. The video camera parachuted to safety, booster continued on a beautiful ballistic decent with the sun glinting off it's fins teminating with a sickening "pop" as it was eaten by a tree.

http://www.youtube.com/watch?v=8n_IiVa1UEk

Again, glue those knots!


Pretty good video from that Oracle. Sorry to hear about the IRIS loss. At least the camera was recovered.

Reminds me of a flight I put in with an Estes Sunbird about 20 years ago. Beautiful arc, followed by the immediate separation of the NC from the rubber band. I watched the sustainer do a beautiful death dive all the way to impact, then started walking in that direction to recover it. About halfway to the target, I was greeted by the NC on the streamer as it fluttered down in my face.

Agreed, a drop of glue on the shock chord knots can work wonders.
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  #7  
Old 12-27-2008, 02:13 PM
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CPMcGraw CPMcGraw is offline
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Default More "Lost Souls" Found!

Well, it seems I done forgotted how to count...

I just located another batch of ten from the "Scrounged...2007" thread that did not get posted, and one that needs to be reworked using R9, for a total of eleven designs not counted.

As was the case with the last batch, many of these belonged to JP. Three others belonged to me, one belongs to Fore Check, and one belongs to Manic BAR.

Subtracting the one that needs revision, this gives us a new total standing at 552...

The new "Magic Number" for reaching 600 is now 48...

We still have 4 days in December, and I still have "Scrounged...2006" to look through. Can we make it to 600 before then???
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Last edited by CPMcGraw : 12-27-2008 at 02:17 PM. Reason: I still cain't count straight!!!
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  #8  
Old 12-27-2008, 04:21 PM
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Tau Zero Tau Zero is offline
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Quote:
Originally Posted by CPMcGraw
Well, it seems I done forgotted how to count...

I just located another batch of ten from the "Scrounged...2007" thread that did not get posted, and one that needs to be reworked using R9, for a total of eleven designs not counted.
So if my feeble brain can follow your straightforwardly convoluted calculations, you found a total of 21 new designs... or what?


Inquiring minds want to know,
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  #9  
Old 12-27-2008, 04:35 PM
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CPMcGraw CPMcGraw is offline
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Default Still More "Lost Souls" Found!

I just completed the pass through the "Scrounged...2006" thread, and located 11 more designs that for whatever reason was not included. As I think about these, some may have had excessively high Dv numbers, or other issues of stability that were not fully addressed at the time.

This now gives us 563...

I also located 17 additional designs that need revision with R9. If these can get worked over, that would give us 580 plans in the Master List. Needless to say, I'll be busy for the next few days...
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  #10  
Old 09-22-2007, 12:28 AM
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Default New Plan -- Aiptek Mini PenCam 1.3 Rocket

A two-stage PenCam carrier .....

While waiting the five days for my two Aiptek Mini PenCam 1.3 cameras to arrive, I set out to build a quick and basic rocket to fly the camera in. Appropriately named "Aiptek Mini PenCam 1.3 Rocket" I found parts & fin cans from a couple of Estes Eliminator and OOP Longshot kits and some lengths of Semroc series 13 tubing.

The parts I selected stacked up to be an Estes Longshot only with Estes & some additional Semroc parts including a Mars Lander nose cone - a short length of Semroc ST-16, and the short Semroc BR-1316 transition. Although it wasn't my intention, after looking at it in RockSim I realized the capsule somewhat resembled the old Estes Camroc.

My main design goal for this project was quick assembly with the plastic fin cans and to get the camera in the air and launch it tomorrow, but the weather is flaring up again. I have since abandoned this design although someone else on the forum may have interest in it.

Length: 35.75"
Diameter: 1.64" (ST-16)
Fin Span: 5.716"
Weight (with camera): 8.21 oz
Weight (without camers): 5.76 oz

.
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