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  #351  
Old 12-18-2008, 06:36 PM
James Pierson James Pierson is offline
Master Modeler
 
Join Date: Dec 2005
Location: Washington State
Posts: 654
Smile New Design: Lighthawk Interceptor

Had some real trouble coming up with a name for this design and finally settled on Lighthawk Interceptor. The swept back wings look kind of like a hawk in a dive. This design has both good altitudes and excellent Dv's on four of the 18mm motors. Also added some fins to the inside of the tube fins of some interesting details. It should prove to be an interesting build and even more so to test fly. Add another to the evergrowing build pile.

3rd Annual

7 Days Before Christmas

Enjoy and Merry Christmas to ALL, JP.

James Pierson
NAR# 77907

Lighthawk Interceptor (18mm)
Launch guide length: 36.0000 In

MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY
A8-3..................186.63878 Ft..............6.3637 ft/s
B4-4..................438.62533 Ft..............4.5100 ft/s
B6-4..................446.14173 Ft..............5.7191 ft/s
C6-5..................934.14042 Ft..............6.6165 ft/s
.
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Attached Files
File Type: rkt Lighthawk Interceptor.rkt (81.8 KB, 91 views)
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  #352  
Old 12-18-2008, 08:50 PM
snaquin's Avatar
snaquin snaquin is offline
The_Ripper
 
Join Date: Jun 2005
Location: Louisiana
Posts: 1,933
Default

F.Y.I.

After registering the v9 beta version with my license file, RockSim did an auto update to Beta release 65.

Version information
Apogee Components RockSim
Version: 9.0.0b65
Copyright: 2006 Paul L. Fossey
Beta release, 65
Registration status
License file verified.

This product is registered to:
Name: Steve Naquin
Address: .
EMail: .

.
__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim
🚀 4/10/21-4/11/21 w/rain date of 4/17/21-4/18/21
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  #353  
Old 12-18-2008, 09:44 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Exclamation New Plan -- Aggressor

This design may have just uncovered another flaw. Someone tell me how likely it is to get a 3.2 oz model to 655' on a single C6-5...

Here's the Aggressor, one of the sketches from November, which is an extreme asymetrical rocket. I call it the "ice sled in space"...

Length: 25.68"
Diameter: 1.04" (ST-10)
Fin Span: 17.69"
Weight: 3.2 oz



B6-4......267'......Dv 20 FPS......36" x 1/8" rod
C6-5......655'......Dv 16 FPS......36" x 1/8" rod



The margin is 1.57 on the B6-4, and 1.24 on the C6-5. It took a 1/8 oz mass in the forward section to get it to balance properly. I think this is yet another issue...

I'll be sending bug reports to TVM and PF shortly...

Otherwise, Enjoy!
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Attached Files
File Type: rkt Aggressor V9 Mk II.rkt (101.6 KB, 90 views)
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  #354  
Old 12-18-2008, 09:54 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default Design Count Update...

518...

Note: Neither Aggressor, nor Star Legionaire, have been added to the list. The most recent addition was JP's post from today.
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  #355  
Old 12-18-2008, 11:46 PM
Tau Zero's Avatar
Tau Zero Tau Zero is online now
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,208
Wink Behind the scenes...

Quote:
Originally Posted by CPMcGraw
...And, of course, Jay has his Tau Zero now as an official kit, which was designed with V8.
The reason I haven't posted any new RS9 designs is because I've been using the "scale" factor to upscale the Tau Zero to SLS ("Semroc Large Scale") ~175% size.

It upscales the tubes, nose cones, and fin material by length *and* thickness! My 3/32" (0.0938") balsa fins upscaled to 0.1642" T.

RS9 does weird things to fins inside tubes in the 2D view. So I requested my license to see if the updated build makes any difference before shooting a bug report off to Tim and Paul.

(Thanks for the license/update propaganda, Steve. )


Cheers,
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"Centuri Guy"/"Tau Zero"
YORF Member 28
Semroc SAM #0029
NAR 86131

"Your lightyears may vary."


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
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  #356  
Old 12-18-2008, 11:53 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default

Quote:
Originally Posted by CenturiGuy
RS9 does weird things to fins inside tubes in the 2D view. So I requested my license to see if the updated build makes any difference before shooting a bug report off to Tim and Paul.


One of the fixes in B65 did correct a fin positioning problem. But now I've just sent T&P a few additional bugs to look at. Some of my buttons don't respond...
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  #357  
Old 12-18-2008, 11:58 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Exclamation New Design -- Nebula Rat

Well, here's yet another effort to break R9 before it even gets shipped. I'm succeeding!

Length: 10.375"
Diameter: 0.908" (ST-8)
Fin Span: 3.94" (BT-101)
Weight: 1.18 oz

I have not simulated this yet, as the CG is behind the CP. The margin reads -11.55!!!

Study it and enjoy the freedom to create things we can't simulate yet!
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Attached Files
File Type: rkt Nebula Rat V9.rkt (55.8 KB, 72 views)
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  #358  
Old 12-19-2008, 01:53 AM
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CPMcGraw CPMcGraw is offline
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Location: Mobile, Alabama
Posts: 5,357
Exclamation New Plan -- Willit

Finally got one to work without major issues!

This is another ring tail. I'm not especially fond of them, since RS doesn't really know how to deal with them, but they do make for some interesting concept designs...

Length: 18.00"
Diameter: 1.04" (BC-760)
Fin Span: 3.94" (BT-101)
Weight: 1.09 oz


B6-2......179'......Dv 2.08 FPS......36" x 1/8" rod
B4-2......185'......Dv 3.46 FPS......36" x 1/8" rod


Enjoy!
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File Type: rkt Willit.rkt (47.0 KB, 89 views)
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  #359  
Old 12-19-2008, 02:31 PM
James Pierson James Pierson is offline
Master Modeler
 
Join Date: Dec 2005
Location: Washington State
Posts: 654
Smile New Design: Stump Jumper

This next design called the Stump Jumper looks simular to an Big Bertha but is quite different. I used the BNC-60 AL for the
nose cone along with the 5 inch BT-60R and the BTC-60A hollow balsa transition to crerate the main body of this design.
All of these parts are Semroc "Classic" parts which I have recently added to my parts database.
So many parts and so many new design ideas, Thanks Carl!

3rd Annual

6 Days Before Christmas

Enjoy and Merry Christmas to ALL, JP.

James Pierson
NAR# 77907

Stump Jumper (18mm)
Launch guide length: 36.0000 In

MOTOR.................MAX. ALTITUDE...........DEP. VELOCITY
A8-3..................228.68504 Ft.............4.5855 ft/s
B4-4..................501.22047 Ft.............9.7857 ft/s
B6-4..................505.75459 Ft............12.9399 ft/s
C6-5..................996.93898 Ft.............4.9348 ft/s
.
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File Type: rkt Stump Jumper 18mm.rkt (61.1 KB, 107 views)
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  #360  
Old 12-19-2008, 03:31 PM
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CPMcGraw CPMcGraw is offline
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Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Exclamation New Plan -- Zorchou

It's nice when a design works. This one took some tweaking, and probably could use some additional trimming, but it seems to work well enough to try building a prototype.

Length: 19.17"
Diameter: 0.908" (ST-8)
Fin Span: 6.3"
Weight: 1.11 oz

The simulation runs are attached below. The best motor is the A10-3T.

Enjoy!
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Name:  Zorchou Simulation Runs.jpg
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Attached Files
File Type: rkt Zorchou V9.rkt (152.4 KB, 90 views)
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