Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > BARCLONE > Designer's Studio
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 11-07-2010, 11:50 PM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,036
Exclamation New Design -- Abrogator

Apparently I've seen the "Babylon 5" TV show at least *one* time too many, and I borrowed the gold and purple color scheme from the Centauri ships.

Definition: abrogate - revoke formally. abolish, get rid of - do away with.

I can hear Londo Mollari saying in his Hungarian accent, "We are formally revoking your *tiny leetle government's* independence, and sending our personal representative to oversee your planet for us. "


I'll post the fin pattern later, but I wanted to get your input on this design.

I have several others of this general size (Semroc/Centuri ST-10 upper body tube/ST-13 lower body tube). While I prefer 3 fins instead of 4, with this maximum diameter (1.34"), I often have to increase the number to 5 fins to get reasonably slow (i.e., "non-chute shredding") deployment velocities. These fins extend about 2.75" from the lower body tube.


Craig and anybody else, got any thoughts along these lines? Please post 'em here!

Cheers,
.
Attached Thumbnails
Click image for larger version

Name:  Abrogator_00.jpg
Views: 190
Size:  71.1 KB  Click image for larger version

Name:  Abrogator_01.jpg
Views: 114
Size:  145.2 KB  Click image for larger version

Name:  Abrogator_02.jpg
Views: 124
Size:  159.8 KB  
Attached Files
File Type: rkt Abrogator.rkt (91.0 KB, 102 views)
__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014

Last edited by CenturiGuy : 11-08-2010 at 09:40 AM.
Reply With Quote
  #2  
Old 11-08-2010, 10:50 AM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default

Looks like "Design #801" to me...

Should be plenty rugged for typical flying, nothing delicate to break off. Only suggestion I might make is to move the launch lug forward a bit. Position it closer to the CP, or between the CP/CG points, to keep aerodynamic torquing down during launch. Load it with the C6 (heaviest engine) to find the zone.

Let's go with it!
__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635
Reply With Quote
  #3  
Old 11-08-2010, 07:01 PM
Brain's Avatar
Brain Brain is offline
Creator of 'STONE TREK'
 
Join Date: Aug 2010
Location: Bradenton, FL
Posts: 613
Default

Quote:
Originally Posted by CenturiGuy
Craig and anybody else, got any thoughts along these lines? Please post 'em here!

My first gut reaction: I'm not crazy about the fins. In my head, they don't match the 'feeling' I get from the segmented body tube, which I like a whole bunch!

I could get to like them, but I'd be interested in seeing some alternative styles... Just my 2 cents worth...
__________________
-Brain
SKY AYE ROCKETRY
Follow Your Impulse!
Reply With Quote
  #4  
Old 11-08-2010, 10:49 PM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,036
Thumbs up Thanks, Brain!

Quote:
Originally Posted by Brain
My first gut reaction: I'm not crazy about the fins. In my head, they don't match the 'feeling' I get from the segmented body tube, which I like a whole bunch!

I could get to like them, but I'd be interested in seeing some alternative styles... Just my 2 cents worth...
Brain,

Thanks for your two cents!

I'll let my "little gray cells" stew some more on the fin patterns. I have no problem with trying some "variations on a theme," like I did with my "5820 (Fifty-Eight Twenty)" series a while back.

Cheers,
.
__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
Reply With Quote
  #5  
Old 11-09-2010, 12:21 AM
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
Brain,

Thanks for your two cents!

I'll let my "little gray cells" stew some more on the fin patterns. I have no problem with trying some "variations on a theme," like I did with my "5820 (Fifty-Eight Twenty)" series a while back.

Cheers,
.


There's always the "open frame" concept...
__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635
Reply With Quote
  #6  
Old 12-26-2010, 02:29 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Default Fin Patterns

Here's the fin sheet pattern. You will need two sheets to do the model as-designed, and this will leave 1 extra fin (3 fins per sheet).
Attached Thumbnails
Click image for larger version

Name:  Abrogator Main Fin.JPG
Views: 94
Size:  41.8 KB  Click image for larger version

Name:  Abrogator 3D.jpg
Views: 109
Size:  51.7 KB  
Attached Files
File Type: zip Abrogator Main Fin.zip (5.7 KB, 84 views)
__________________
Craig McGraw

BARCLONE Rocketry -- http://barclone.rocketshoppe.com
BARCLONE Blogsite -- http://barclone.wordpress.com
BARCLONE Forum -- BARCLONE Forum

BARs helping BARs

SAM 0044
AMA 352635
Reply With Quote
  #7  
Old 12-26-2010, 03:51 PM
johnnwwa johnnwwa is offline
BAR
 
Join Date: Apr 2005
Location: Washington State
Posts: 467
Default

The first thing I look at when I see a new design published here is this.

The design itself. Would I build this rocket, Does the design appeal to me.
The answer is YES.
I move on to.

What motors will this rocket fly on? .. In this case A,B,C prefect
What is it's maximum altitude . Just about a 1000' perfect. ( I like to be able to see my rockets for lift off to recovery/ landing)

What is the FPS at apogee ... In this case all motors used are less that 7 FPS perfect.

So I would say Jay..You Have a Winner.

John
__________________
John

NAR #91135 L1
SAM #0037
Reply With Quote
  #8  
Old 12-27-2010, 12:32 AM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,036
Thumbs up Jay chats with John W.

Quote:
Originally Posted by johnnwwa
The first thing I look at when I see a new design published here is this.

The design itself. Would I build this rocket, Does the design appeal to me.
The answer is YES.
I move on to.

What motors will this rocket fly on? .. In this case A,B,C prefect
What is it's maximum altitude . Just about a 1000' perfect. ( I like to be able to see my rockets for lift off to recovery/ landing)

What is the FPS at apogee ... In this case all motors used are less that 7 FPS perfect.

So I would say Jay..You Have a Winner.
Thanks John! It feels awful lonely to post a design here and get NO comments. (sad look)

I mean, I don't think I've "got it all down," even with the Semroc release of my Tau Zero design. (Thanks, Carl!) So anything constructive that *anybody* wants to say is *greatly* appreciated.

FWIW, I *do* have an alternate "tube fin" variation that broke the current version of RockSim, so hopefully Paul Fossey is making at least some progress on fixing that.


Glad you like it, John! Thanks for your comments!


Cheers,
__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
Reply With Quote
  #9  
Old 12-27-2010, 11:31 AM
johnnwwa johnnwwa is offline
BAR
 
Join Date: Apr 2005
Location: Washington State
Posts: 467
Default

Jay

Keep those designs coming.

BTW I live pretty close to James Pierson we get together to test his designs at our launch site. Overhead photo here. www.4hrockets.blogspot.com
\
The user name Johnnwwa is John N orth W est Wa shington

John Ludwig

James and I are going to NARCON
__________________
John

NAR #91135 L1
SAM #0037
Reply With Quote
  #10  
Old 12-27-2010, 09:39 PM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,036
Talking John Ludwig, master of the drumkit?

Quote:
Originally Posted by johnnwwa
Jay

Keep those designs coming.

BTW I live pretty close to James Pierson we get together to test his designs at our launch site. Overhead photo here. www.4hrockets.blogspot.com
\
The user name Johnnwwa is John N orth W est Wa shington

John Ludwig
John,

All these years I've been reading it "Johnn W. WA."

So I may have to remember that your *real* last name is the same as a company that manufactures drumsets.


Please forgive me if I accidentally call you "Johnny Roland," because that's the brand of drums that I play.



Quote:
James and I are going to NARCON
Excellent! Have fun!


Cheers,
__________________
Jay Goemmer
"Centuri Guy"/"Tau Zero"
Semroc SAM #0029
NAR 86131


“Centuri fret buzz in an updated form.”
Bill “Wallyum” Eichelberger re: Estes Flutter-By
03 Sept 2014
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 05:48 AM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2020