Wow, Craig... so after you build yours, I can just order up a set of those fins from Carl?

... might have to build one myself.

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

Let me get at least one prototype flown before everyone bombards Carl with requests ...

It may need some tweaking...

__________________
Craig McGraw

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SAM 0044
AMA 352635

This is a new plan, but it is also a 15% upscale of the original design I posted here some time back. I have now completed a prototype of that version using 13mm motors, and should be flight-testing it tomorrow (weather permitting, which looks great). This larger version seems better suited for the 18mm motors available, as the Dv numbers are all below 8 FPS.

All motors reach flight velocity on a standard 36" x 1/8" rod.

Length: 19.565"
Diameter: 1.04" (ST-10)
Fin Span: 5.665"
Weight: 1.33 oz

A8-3......200'......Dv 4 FPS
B4-4......460'......Dv 5 FPS
B6-4......470'......Dv 7 FPS
C6-5......965'......Dv 3 FPS

Enjoy!

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Attached Files

Argo 18.rkt (62.9 KB, 103 views)

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Craig McGraw

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SAM 0044
AMA 352635

Sorry Bill, you can see the video at http://www.youtube.com/watch?v=DGUI-6Xi4XM. It is also on EMRR in the Design This Spaceship contest from last year. The rocket is the Federated Transport and Delivery rocket which took third place.

__________________
Geoffrey

NAR 85416 L3 as of 4/2010

"There is never enough rope to do the job but it is always long enough to hang yourself up with problems"

Pronounced: a-po-ka' ly-psis

I just like the sound of the name...

This was a simple doodle in RockSim tonight. Try to imagine those fins as being nose cones with pod bodies stuck on the tips, similar to those on the Antares.

Good performance, low Dv numbers. All motors reach safe flight velocity on a standard 36" x 1/8" launch rod.

Length: 23.30"
Diameter: 0.908" (ST-8)
Fin Span: 5.53"
Weight: 1.23 oz

A8-3.......232'......Dv 6 FPS
B4-4.......526'......Dv 15 FPS
B6-4.......531'......Dv 19 FPS
C6-5......1084'......Dv 16 FPS

Enjoy!

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Attached Files

Apokalypsis.rkt (70.6 KB, 92 views)

__________________
Craig McGraw

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SAM 0044
AMA 352635

Ok, Craig, can you do anything with this one? Put it together from two others that were not quite right for what they were built for and I didn't want to throw them out. It has flown, it went remarkably high on two A10-3T's. Recovered just fine not far from the pad. I have tried to get it into RockSim but I don't have enough experence with the program to do so, if it can at all. It is called the "Two Fer".

BT-5 tubes : 2@ 8.5"
2@ 1.75
Std. Estes PNC-5 nose cones
Fins from the Mirv Gryphen
Duel streamer recovery using #30 Kevlar only
Motor blocks in the main tubes only
Small spacer blocks between main tubes to allow easier engine removal

I would like to try four engines but I would also like to get it dang thing back!!

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Attached Files

Two 'fer.rkt (17.9 KB, 94 views)

__________________
Geoffrey

NAR 85416 L3 as of 4/2010

"There is never enough rope to do the job but it is always long enough to hang yourself up with problems"

This is still a "work-in-progress", but I thought I'd share it in its current form to see if anyone can "spot the loony" as to where I'm hung up. The inspiration comes from the twin-glider project by Buzz Nau, but as you can easily tell, it's not an exact copy. My idea is to use twin drop-off boosters with "D" motors, and very possibly incorporate one of the new "super-micro" Spektrum or Futaba radio systems for control of the glider.

Obviously I cannot simulate this model in RockSim beyond the graphics, but I think you can get the general idea. The glider will need flight balancing, and that will be determined by whether I do include the radio or not (I am leaning that way, but I still want to see the glider free-flight...).


Glider:

Length: 23.8"
Diameter: 1.34" (ST-13)
Wing Span: 10.09" (5 degree dihedral total)
Weight: 1.81 oz (no radio)

Each Booster:

Length: 23.0"
Diameter: 1.04" (ST-10)
Fin Span: 3.54"
Weight: 1.06 oz


Planned motor is the D12-3 in each booster.

Contemplate!

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Attached Files

	Starlighter Booster.rkt (21.2 KB, 90 views)
	Starlighter Glider.rkt (31.1 KB, 87 views)

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Craig McGraw

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SAM 0044
AMA 352635

Found this pic on ebay.
Looks like something Mr. Pierson designed.

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Here is the backside of the photo of the vintage rocket model.

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Good find Chris. Looks like Mr. Maurice Poirier has a nack for sci-fi and is way ahead of his time for 1937. I would like to have seen that test launch from behind a concrete bunker !
A couple of other thinks I noticed in the photo is the size of the rafter tails coming down from the roof system. They are true 2 inch by 4 inch 2x4's and they also look to be cut by hand with an handsaw. That was before power tools came along .

PS. Please don't call me Mr.-- Makes me feel old and I'm only 39 and holding .

James Pierson
NAR# 77907