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  #31  
Old 01-04-2009, 01:55 AM
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CPMcGraw CPMcGraw is offline
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Quote:
Originally Posted by rkt2k1
Craig - nice catch! Yeah, the more eyes looking at these files the better!

After a while, one can get a little bleary eyed working directly with the CSV files!

I'm trying my best to review parts in design mode in Rocksim prior to submitting files to forum. But there be a lot of parts in them there files.

... Bill


I'm keeping local copies of these files in the ODS format, which preserves any formulas I want to use. That formula for figuring out the CG location is just such an animal, as I only have to do the formula once and copy/paste it down the column.

So, have we completed anything (pending review)? I think we've worked on BTDATA (body tubes), BHDATA (bulkheads), NCDATA (nose cones), TCDATA (tube couplers), and TRDATA (transitions, reducers, and tail cones). Have we actually completed the data for all of the SEMROC components in these categories, for both SEMROC Standards and LTs, and Estes Classics?

What other components have we not worked on yet? CRDATA (centering rings)? EBDATA (engine blocks)? LLDATA (launch lugs)? PCDATA (parachutes)? STDATA (streamers)? SLDATA (sleeves)? MODATA (mass objects)?

I just noticed RTDATA and TFDATA. Want to guess what these cover?
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  #32  
Old 01-04-2009, 02:02 AM
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Quote:
Originally Posted by snaquin
Thanks Bill

I guess it's pretty obvious but I'm an SLS freak.

I'm finding I have a few designs including some that have been built and flown that I entered into RockSim and either posted them to other threads on the forum or just neglected to consider posting to BARCLONE. Shame on me .....

The next design I'll rework is an FSI rocket that was one of my favorite two stagers. I have to rework it with Semroc parts because all my FSI rockets were entered into RockSim 5 and I used FSI parts when I entered the data to create the files.

.


Sorry I haven't said "Thanks" earlier. I've been a bit... distracted...

I really like that Hornet. I have a clone of the standard version waiting for some yellow paint. One day this century, I'll try to get around to it.
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  #33  
Old 01-04-2009, 02:30 AM
rkt2k1 rkt2k1 is offline
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Default

Quote:
Originally Posted by CPMcGraw
So, have we completed anything (pending review)? I think we've worked on BTDATA (body tubes), BHDATA (bulkheads), NCDATA (nose cones), TCDATA (tube couplers), and TRDATA (transitions, reducers, and tail cones). Have we actually completed the data for all of the SEMROC components in these categories, for both SEMROC Standards and LTs, and Estes Classics?


I think pending final review, BTDATA, BHDATA, NCDATA, TCDATA, and TRDATA are as complete as possible based on the parts that can be created without using sub-assembly feature. I have included all parts from Semroc's website, including LTs and Estes classics, with files I've submitted.

Quote:
Originally Posted by CPMcGraw
What other components have we not worked on yet? CRDATA (centering rings)? EBDATA (engine blocks)? LLDATA (launch lugs)? PCDATA (parachutes)? STDATA (streamers)? SLDATA (sleeves)? MODATA (mass objects)?


Yes, I think these are the next part sets to begin working on. Not as much data on web site for some of these. Is the Material CSV data file updated for some of these parts? I was specifically thinking of the fiber used in some of the centering rings.

Quote:
Originally Posted by CPMcGraw
I just noticed RTDATA and TFDATA. Want to guess what these cover?


RTDATA = Ring Fins
TFDATA = Tube Fins

Neither have any data loaded in the default parts files.

Any particular parts area you'd like me to focus on next. Let me know.

... Bill
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  #34  
Old 01-04-2009, 02:33 AM
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Exclamation New Plan -- Mini Alpha

Another reduced-size version of one of the all-time favorite designs. This is an ST-8 variation of the Astron Alpha, using 13mm motors. The performance on the A3-4T is rather zippy.

Length: 12.00"
Diameter: 0.908" (ST-8)
Fin Span: 3.91"
Weight: 0.68 oz


1/2 A3-4T......215'......Dv 23 FPS......36" x 1/8" rod
A3-4T..........528'......Dv 17 FPS......36" x 1/8" rod


Enjoy!
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  #35  
Old 01-04-2009, 02:42 AM
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Quote:
Originally Posted by rkt2k1
I think pending final review, BTDATA, BHDATA, NCDATA, TCDATA, and TRDATA are as complete as possible... Is the Material CSV data file updated for some of these parts? I was specifically thinking of the fiber used in some of the centering rings.


I was wondering about the materials file. We might want to create a new entry for "Matteboard" and use Carl's numbers for the 0.020", 0.050", and 0.070" boards he works with. That data could then be used to update the centering rings data already in the file.

Quote:
RTDATA = Ring Fins
TFDATA = Tube Fins

Neither have any data loaded in the default parts files.


I was hoping Jay would take notice of those two...

I'm not sure just yet how those data files are supposed to work, since there's nothing in them.

Quote:
Any particular parts area you'd like me to focus on next. Let me know.


Right now, only CRDATA and EBDATA are critical, since they have the most items. The remaining files can probably stay as they are, unless or until something new gets added. If you'd like to tackle those two, it works for me. I'll look at the LLDATA file, and see if anything is missing (I know already of a few missing items...).
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  #36  
Old 01-04-2009, 04:06 PM
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Exclamation New Plan -- Tiger Tail

Here's a two-stage design for Semroc components. It was one of the sketches posted last month, with minor adjustments.

Length: 29.75"
Diameter: 1.04" (ST-10)
Fin Span: 5.04"
Weight: 2.11 oz


B6-0 / A8-5......592'.......Dv 15 FPS
B6-0 / B6-6......872'.......Dv 19 FPS
C6-0 / A8-5......996'.......Dv 10 FPS
C6-0 / B6-6......1245'......Dv 7 FPS
B6-0 / C6-7......1424'......Dv 29 FPS......parachute reefed
C6-0 / C6-7......1762'......Dv 24 FPS......parachute reefed


All combinations require a 48" x 3/16" rod for reaching safe flight V.

Enjoy!
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  #37  
Old 01-04-2009, 04:08 PM
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Default TRDATA Error found

Bill,

Check the REAR OD values in the reversed transitions. I found one while working the Tiger Tail design (BR-710 [R]) that has a 0.0001" rear diameter. There may be others like this. That diameter was only used with the reversed nose cones.
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  #38  
Old 01-04-2009, 04:44 PM
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Default New Design -- Mach 1 Dart with RX-1 Thruster System

Mach 1 Dart with RX-1 Thruster System

I flew my first Mach 1 Dart with RX-1 Thruster System when I was a teenager .....

After several flights purchasing the motors (RX-1 Thruster System) I looked for a less expensive alternative and something for small field flights. The Dart model and booster that I built in the images below have the 21mm mounts in both stages, meaning Semroc ST-8F tubing less the motor mount in the Dart. When FSI 21mm motors were available I used D20 or D18's in the booster and usually D18's in the Dart. Always turned in perfect flights.

This design is based on 18mm motors and uses all Semroc parts. The chamfer on the top of the booster on the original was actually the top of the F100-0 that had been rounded for a smoother transition between the Dart and the booster. This is the perfect place to use Apogee Fix-It Epoxy clay. The inside tube should be just a little longer so you can run a little snake of clay around the tube and smooth a really nice transition. If you look closely you can see this on the images with the booster separated from the Dart.

Use 1.00" motor overhang to give the Dart motor enough length to slide into the booster ST-30 mount.


Length: 24.85"
Diameter: 0.921" Dart (ST-8F) / 1.170" Booster (ST-11)
Span Dia: 4.920"
Weight: 1.551 oz


C6-0 / C6-7.......2,181'.........DV 3 FPS.........36" x 1/8" rod

For kicks I left the data in the flight simulations from a Mach-1 Dart two stage model, since I revised my FSI file that used parts data that I had recorded from an original kit.

F100-0 / D20-10.......3,249'.......DV 26 FPS.......36" x 1/4" rod
Max Velocity: 1,070 Feet / Sec.
Max Acceleration: 1,778 Feet / Sec / Sec



.
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  #39  
Old 01-04-2009, 04:46 PM
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Quote:
Originally Posted by CPMcGraw
Sorry I haven't said "Thanks" earlier. I've been a bit... distracted...

I really like that Hornet. I have a clone of the standard version waiting for some yellow paint. One day this century, I'll try to get around to it.


I'm always happy to contribute to BARCLONE and having some extra time off for the Holidays gave me a little extra time to play with version 9 and mess with a few old files.

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  #40  
Old 01-04-2009, 05:20 PM
rkt2k1 rkt2k1 is offline
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Default TDDATA file error ???

Quote:
Originally Posted by CPMcGraw
Bill,

Check the REAR OD values in the reversed transitions. I found one while working the Tiger Tail design (BR-710 [R]) that has a 0.0001" rear diameter. There may be others like this. That diameter was only used with the reversed nose cones.


Craig,

I checked both the TRDATA file I posted and submitted and the master TRDATA file you posted with the combined tailcones, and could not find the error you mentioned. I looked at the entire file and only the tailcones show rear diameter of 0.0001". I've posted screen shots of the two files in Excel.

... Bill
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