Ye Olde Rocket Forum

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


Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 04-04-2005, 05:33 PM
Tweener's Avatar
Tweener Tweener is offline
Out To Launch
 
Join Date: Mar 2005
Location: Ottawa, Ohio
Posts: 281
Default ThunderRoc Launch Report!

Single launch today. First really beautiful day here in NW Ohio for a LONG time. Winds were about 3-6 MPH, temp 75 degrees. Launch was with an Estes D12-5 , rod angled about 10 degrees windward to be sure of a close recovery. Tracked very straight with no discernable rolling or spiraling. Estimate peak altitude at about 450 to 500 feet. Deployment of both 18" chutes was perfect for a nice, gentle descent. Touched down about 50 yds upwind. (I could have reduced the angle to 5 or 0 degrees as I had plenty of room downwind also, but better safe than sorry.) This is one awsome flyer; even better than I remember!

I really want to thank Semroc for the laser cut fins and JimZ for the pdf decal sheet, and last but not least the "Fish" for tipping me off in his EMRR review that this could be built from a stock Mean Machine kit.
Reply With Quote
  #12  
Old 04-10-2005, 08:21 PM
Tweener's Avatar
Tweener Tweener is offline
Out To Launch
 
Join Date: Mar 2005
Location: Ottawa, Ohio
Posts: 281
Default

Man! Am I glad I decided to go with the dual 18" chutes instead of the single 24" that came with the Mean Machine kit that I bashed. I had one launch this afternoon, my third for the 'Roc, and somehow one of the 'chute canopies got draped over the fins while the shock cord was stretched. When it contracted, it tightened the entire canopy over the aft end. The rocket came down with the body horizontal dangling from the remaining 'chute which was attached by pure coincidence at what was very near the CG point on the body. I think some of the onlookers thought the horizontal recovery was nominal. I shudder to think what would have happened if a single parachute had hung up like that. The only damage was a little deformation of the chute that contacted the still hot engine nozzle.
__________________
John Lance Ladd
Yoyodyne Propulsion Systems
Grovers Mill, NJ
Established 1938
lladd.netau.net
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 05:27 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe © 1998-2024