 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
| HomeDiscussion Groups General ModelsRailroadsRocketsRadio Controlled Air ModelsHelicoptersLand ModelsWater ModelsModelGeeks.com Contact UsLink To UsSearch & Site Map |
Model Forum / General / Rockets / June 2009My L1 Certification
I earned my L1 certification at ROCstock XXIX today. My 29 mm diameter Blue Tube™ rocket rocketed skyward on an H128 at about 10:20 AM on pad 19 at the ROC's Lake Lucerne launch site. For about a minute I thought the Rocket Gods had taken it. Then, someone found it quickly drifting away on its 18-inch yellow parachute in the 15+ mph winds. In about a minute, it disappeared again from sight. Fortunately, some ATV drivers recovered it about a mile away from the pad. (Saved by a pair of bright orange return labels!) John Wahlquist of ROC witnessed and signed. He deserves extra credit for his patience with me. I wonder how high I can make a "L" impulse minimum diameter go? (I've really got to work on dual deployment and radio location.) -.-. --.- Roger Coppock I earned my L1 certification at ROCstock XXIX today. My 29 mm diameter Blue Tube™ rocket rocketed skyward on an H128 at about 10:20 AM on pad 19 at the ROC's Lake Lucerne launch site. For about a minute I thought the Rocket Gods had taken it. Then, someone found it quickly drifting away on its 18-inch yellow parachute in the 15+ mph winds. In about a minute, it disappeared again from sight. Fortunately, some ATV drivers recovered it about a mile away from the pad. (Saved by a pair of bright orange return labels!) John Wahlquist of ROC witnessed and signed. He deserves extra credit for his patience with me. I wonder how high I can make a "L" impulse minimum diameter go? (I've really got to work on dual deployment and radio location.) -.-. --.- Roger Coppock Congrats and welcome aboard! > I earned my L1 certification at ROCstock XXIX today. My 29 mm > diameter Blue Tube™ rocket rocketed skyward on an H128 at > about 10:20 AM on pad 19 at the ROC's Lake Lucerne launch site. Congratulations Roger! OK, please forgive my naivety regarding HPR, having never built or flown, but ... BT-5 is min. dia. for 13mm; BT-20 is min. dia. for 18mm; BT-50 is min. dia. for 24mm. What the heck is min. dia. for 29mm? From the specs, BT-55/56 seems too big. >> I earned my L1 certification at ROCstock XXIX today. My 29 mm >> diameter Blue Tube™ rocket rocketed skyward on an H128 at [quoted text clipped - 8 lines] > dia. for 24mm. What the heck is min. dia. for 29mm? From the specs, > BT-55/56 seems too big. You wouldn't want to use Estes tube for a high power rocket! Going to somebody like Public Missiles Limited, it turns out they've got phenolic airframe tubing with a 1.145" inside diameter: https://blastzone.com/pml/ >>You wouldn't want to use Estes tube for a high power >rocket! Going to >somebody like Public Missiles Limited, it turns out >they've got phenolic >airframe tubing with a 1.145" inside diameter: LOC Precision do some cardboard tube thats ok for lower end L1 stuff. You can use drain pipe. (sorry Quantum Tube) but glassed phenolic for anything the more extreme. There is also the new Blue Tube thats become available (http://www.rebelrocketry.com/shop/index.php?cat=c281_Blue-Tubes.html) - It's just getting to the UK now. Damian Damian Burrin UKRA 1159 Level 2 RSO http://www.ukrocketry.com http://www.larf-rocketry.co.uk LARF - Putting the amateur back in rocketry!! > > I earned my L1 certification at ROCstock XXIX today. My 29 mm > > diameter Blue Tube™ rocket rocketed skyward on an H128 at [quoted text clipped - 8 lines] > dia. for 24mm. What the heck is min. dia. for 29mm? From the specs, > BT-55/56 seems too big. [ . . . ] > BT-5 is min. dia. for 13mm; BT-20 is min. dia. for 18mm; BT-50 is min. > dia. for 24mm. What the heck is min. dia. for 29mm? From the specs, > BT-55/56 seems too big. 29mm works out to BT-52 in Estes' scheme. Yes, I have used BT-52 in a high power rocket. There are, however, many other products better than plain old kraft paper for high power model rocket body tubes. They are usually made with fiberglass and/or epoxy. Sometimes, exotic materials, like carbon fiber, are used. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2012 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.