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 01-04-2012, 06:16 PM
CPMcGraw's Avatar
CPMcGraw CPMcGraw is offline
BARCLONE Rocketry
 
Join Date: Mar 2005
Location: Mobile, Alabama
Posts: 5,357
Exclamation Revised Design -- Flamsteed's Folly

This design has been tugging at me since I posted it, back in 2006. The performance was good, but the Dv numbers were too high for my comfort. The solution was a sweeping change in the tube lengths and the fin shapes. It's almost a new design as a result, but I think there's enough of the original to keep the name.

The fin material has been changed to 0.05" matteboard. I don't have as much distaste of this material since using some of Carl's custom fins for another design, which is still holding up after nearly eight years.

This, then, becomes the Mk II version.

Length: 32.23"
Diameter: 1.34" (ST-13)
Fin Span: 3.59"
Weight: 2.10 oz


B6-4......298'......Dv 16 FPS
C6-5......700'......Dv 14 FPS


It is safe to use a standard 1/8" x 36" launch rod for both engines. I don't recommend the B4-4, as the Dv number is higher for little to no improvement in altitude.

Enjoy!
Attached Thumbnails
Click image for larger version

Name:  Flamsteed's Folly Mk II 2D.jpg
Views: 27
Size:  69.4 KB  Click image for larger version

Name:  Flamsteed's Folly Mk II 3D.jpg
Views: 52
Size:  34.0 KB  Click image for larger version

Name:  Flamsteed's Folly Mk II Fin Sheets [Bold].png
Views: 31
Size:  155.1 KB  
Attached Files
File Type: rkt Flamsteed's Folly Mk II.rkt (122.3 KB, 25 views)
File Type: zip Flamsteed's Folly Mk II Fin Sheets.zip (37.6 KB, 21 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
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 09:44 PM.


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