View Single Post
  #136  
Old 08-05-2008, 11:14 PM
Tau Zero's Avatar
Tau Zero Tau Zero is offline
Incurable SEMROC Fan
 
Join Date: Mar 2005
Location: Twin Falls, Idaho, USA
Posts: 2,207
Thumbs up Mars Voyager -- Take 3!

Quote:
Originally Posted by CenturiGuy
I actually ordered the nose cones and centering rings (CR-1013, 1020) for the Argo-C and my Mars Voyager [SNIP] from Semroc
Craig, Jim, and all,

This one *doesn't* count toward the "Magic Number" since I'm updating it from 2006. I plan on building it with 3/32" balsa and "skinning" the fins with label paper. While the performance is slightly improved from using 1/8" balsa, *both* versions fly best using C6-3 (18mm) and E9-4 (24mm).

+++

Mars Voyager. version 3 (Semroc parts list)

BC-2032 Nose cone
ST-2060 Body tube
2 - LL-320 Launch lugs
4 ST-530 Body tubes
ST-10120 Body tube -- 12" L, 3.0" inside PR-1020, ST-2060
PR-1020 Paper Reducer (Transition)** -- 1.5" L
2 - CR-1020 Centering rings
EM-710 Engine mount (protrudes 0.125")
Includes:
* 2 - CR-710 Centering rings
* ST-730 Body tube
* TR-7 Thrust ring (Engine block)
* EH-28 Engine hook
CP-160 Parachute
Kevlar thread
Elastic cord
Fin set -- 3/32" balsa
Launch lug standoff -- 3/32" balsa

___

**Not all parts available from Semroc yet.


Motor / Max. Alt. / Dv / Calibers (stability)

18mm mount (standard)
C6-3 -- 431 ft. -- 8 fps -- 2.27

24mm mount (mod)
C11-3 -- 371 ft. -- 19 fps -- 1.84
D12-3 -- 672 ft. -- 28 fps -- 1.63
E9-4 -- 1051 ft. -- 0.8 fps -- 1.25


PLEASE USE AT *LEAST* a 48" launch rod!
This design first becomes stable at heights of 31", 31", 30", and 36" on the motors listed above.

+++
Attached Thumbnails
Click image for larger version

Name:  MarsVoyager_04_Edit.jpg
Views: 157
Size:  48.3 KB  Click image for larger version

Name:  MarsVoyager_05_Edit.jpg
Views: 94
Size:  24.7 KB  Click image for larger version

Name:  MarsVoyager_06_Edit.jpg
Views: 97
Size:  14.8 KB  Click image for larger version

Name:  MarsVoyager_Paper_Reducer_PR-2010.jpg
Views: 82
Size:  81.3 KB  
Attached Files
File Type: rkt MarsVoyager_v3.rkt (112.0 KB, 74 views)
__________________
Jay Goemmer
"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
Reply With Quote