BINGO my friend, you guessed it. I am glad you like it. A3-4T has the power but too long of a delay. The A10T-3 should be the chosen motor for this design as actual biuild wieghts are usaully heavier so I would avoid the 1/2A3T-2.

Craig what is your opinion with my chaet to the Margin reference? I just used the inside of the BT-55 tube for the reference. If I could sim the drag of the landing pads we might be able to delete an WL-7 and get some more altitude.

James Pierson
NAR# 77907

I see what you mean...

Hard to say, JP. Using the MFD setting lowers the margin below 1.00 (about 0.74) even without the motor installed. However, using the NCBD brings it up to 2.74 with the A10-3T installed. Changing this to the URD drops it to 1.03, even though the specified diameter is exactly the same as the NCBD. I'd say it's neither, and more like somewhere in the middle.

I know it's heresy to say this, but RockSim doesn't always know what it's talking about...

__________________
Craig McGraw

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

LOL, ain't that the truth though!

I guess only one way to find out if it will fly, built it and it will either fly or crash and burn.
Although the flying part is fun, the crash and burn part is always much cooler .

James Pierson
NAR# 77907

Inspired in part by the Viking series of FSI kits.

Length: 17.74"
Diameter: 0.908" (ST-8)
Fin Span: 5.41"
Weight: 1.75 oz

A8-3......150'......Dv 14 FPS......36" x 1/8" standard rod
B4-4......390'......Dv 3 FPS.......36" x 1/8" standard rod
B6-4......395'......Dv 3 FPS.......36" x 1/8" standard rod
C6-5......895'......Dv 8 FPS.......36" x 1/8" standard rod

Although not illustrated in the RockSim images, the tubes really should be cut on a bevel at the top and bottom ends, matching the cut tubes of the FSI Vikings.

Enjoy!

Attached Thumbnails

   

Attached Files

Norseman.rkt (70.7 KB, 109 views)

__________________
Craig McGraw

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SAM 0044
AMA 352635

Well, I will admit that I have been too busy to post many new Rocksim designs these past few months. I have been busy doing something and that's building a few. So without any further do do, here they are .

PS. The weather here stinks, in fact it snowed the past two days off and on so I havn't got much painting done and will postpone any test launches as well .

Enjoy and Thanks Again, JP

James Pierson
NAR# 77907


Cap Ship and Outpost Voyager



Nebula and Anti Cyclone



Sky Ace and Hostile Intentions



Sky Champ Lander (Version 2)



Ion Explorer (Version 2, 13mm) and Tranquility 1, and Away & Beyond


.

Finally found some time to finish some design files and get them ready to post. Here is a new design I call the Vulcan Shuttle. It has a combination of parts using an Semroc BC-1674 nose cone and an Balsa Machining BMS60V2B drilled tailcone that shapes the main body. Also, the rearward pointing fins with the ringfin look good, I tend to wonder about how they will fair with ground impact during recovery .

Enjoy and Thanks Again, JP

Vulcan Shuttle (18mm)
Launch guide length: 36.0000 In

MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY
B4-4..................270.99803 Ft.............22.7568 ft/s
B6-4..................278.26214 Ft.............18.5061 ft/s
C6-5..................687.48032 Ft.............11.4319 ft/s

James Pierson
NAR# 77907

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Attached Files

Vulcan Shuttle.rkt (57.9 KB, 96 views)

I know that feeling...

I had to force myself to build something this month, and wound up with a nice set of "K" series clones to add to the collection. The newest clones are a Mark and Mark II, an Aerobee 300, an A-20 Demon, and with a bit more looking around, I found a BNC-20B nose cone to build another Invader. Emptying out the parts bin, I found a spare Tau nose cone (BC-760), and I used this to build up a Tau Draconis prototype (13mm version). Add to this two prototypes of the Dominion Keeper, and you get the idea of what I've done in May...

Feels good, too!



Why not attach some hard dowel stock to the tips? Say, some 1" lengths of 3/32" or 1/8" diameter, with only about 1/8" below the balsa edge? Let this take the impact shock instead of the balsa.

__________________
Craig McGraw

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SAM 0044
AMA 352635

James, nice work on the Tranquility 1! I love the design! How about a parts list?

CPMcGraw Quote:


That's a good idea Craig, it would definitly help the tip of the fins from damage and/or breaking off .



jay Quote:


Let me complete a test launch first. A few week ago at the OPROC launch I preped this design for the test launch and then discovered that I forgot the upper and lower launch lugs. Must be the Dain Bramage thing again .

Some other design change on the Neptune Lander, Spaceman 2006, and the Sky Champ Lander are that I have removed the 13mm motor mount and have converted all three design to 18mm. Plan on trying the A8-3 first and then work my way up to B4-4 and B6-4's.
We will just have to see what happens regardless of what Rocksim says .

Thanks for the input guys, JP.

James Pierson
NAR# 77907
.

(tapping foot impatiently) Pictures, please!

(Don't make me beg. It's *not* pretty. )

(Melodramatic, yes. Pretty, no. )


Cheers,

__________________
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