#11
|
||||
|
||||
Quote:
Let's face it: cluster black powder *anything* is not really needed these days and hasn't been for years. BUT, people still fly them for fun...and what they want to do for fun (within legal bounds, or 'rocketry' legal bounds, lets say) is up to THEM. As for composites, well, to me, those REALLY don't start until you get up to 38mm, and in some ways, I'd stretch that to say they don't really, really get interesting until you get up to 54mm and beyond (say, J class and higher). I mean, if you are going to go high power lets really pour the coal on. But, fun and challenge is in the eye of the beholder. Live and let live. Earl
__________________
Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#12
|
||||
|
||||
Does anyone know the filament and fiber optics sizes needed for the full size 3D cineroc camera project?
__________________
======================= If the Sky is the Limit, then, why is there Footsteps on the Moon? ======================= |
#13
|
|||
|
|||
Quote:
Cool flight video Raul. I like the dual smoke trails from the canted motors! I built a LOC Weasel-29 with a Aiptek PenCam and I had decent results at the time but the 808 1080p cameras like you used is sooooo much better https://www.oldrocketforum.com/showthread.php?t=2222 I see in my old thread I got the idea from tbzep from his StormCaster rocket that carried the same camera I used in my Weasel-29. I still have parts from that rocket somewhere .....
__________________
Steve Naquin TRA# 677 L2 NAR# 85518 L2 SAM# 0052 🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals 🚀 In Paint & Detail: USR Banshee 🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate 🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim 🚀 Stay Tuned For Fall 2021 Launch Dates |
#14
|
||||
|
||||
Quote:
Plenty of good reasons: 1. Making it more complicated just for the sake of making it more complicated. 2. Twin cluster just for fun. 3. Practice for novices before stepping up to triple clusters. 4. Having a crap ton of C6-5's to burn from a Walmart clearance so you build a twin cluster. (me) 5. Using B6-4's in your C6-5 cluster burner for smaller field demos. (me) 6. Scale models. 7. Clones of twins such as the Centuri Power System. (me) 8. Because we can. Forgot a big one. With twin motors, you can get a similar thrust profile to your vaunted B14 with two A8's, or close to the D8 with a pair of B6's.
__________________
I love sanding. Last edited by tbzep : 05-20-2020 at 12:01 AM. |
#15
|
||||
|
||||
I stand corrected, tbzep.
You make several valid points.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#16
|
||||
|
||||
Back in the 70's, one of my carrier vehicles of choice was a two stage, two engine cluster. BT60 body tube, steamed and 'squashed' on one end to fit two BT50 engine mount tubes, and what used to call "CHeap And Dirty" (CHAD) staging where you simply tape the boosters to the bottom of the sustainer engines.
It made for very interesting Cineroc videos (especially when one of the booster engines CATO'd - which happened more than once - fortunately they'd lite the sustainer when they let go), got good altitude, and it was cheaper than an Enerjet or an F100 (and interestingly more reliable than the F100s which had a nasty habit of not firing the ejection charge). I'm thinking about recreating that booster for a modern day 'Cineroc' project. |
#17
|
||||
|
||||
I never had trouble with F100's not firing their ejection charge if they did not cato during the thrust phase. Plenty of catos during the propellant burn, but nowhere near as bad as the cato rate of the E60. I have no idea why those stupid E60s were not de-certed within 6mos of their first existence. Only motor I'm aware of that had an over 50% cato rate.
__________________
When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC ! |
#18
|
||||
|
||||
Quote:
I used to fly the Cineroc from my front yard - I lived on the very east end of town (our back windows literally looked out on the prairie - we could see the local airport ~6 miles away) so with the wind out of the west (which was the norm) I could easily recover out in the prairie. Views of the neighborhood were far more interesting than when I launched it in the prairie... I flew 3 F100 motors (two lofting a Cineroc), and one failed to fire the ejection charge (dust bin recovery of the Cineroc when it impacted on asphalt ). Granted, 3 motors is not a good statistical sample, but it was enough to convince me not to bother with that motor. In contrast, I flew my two stage/two D cluster Cineroc carrier over a dozen times with just one unsuccessful recovery when one engine failed to ignite. It went up about 50 ft. and did a loop, then staged when it was roughly parallel to the ground, headed west . It flew over one house, then crashed into the next house. It took out a few potted plants but there was no damage to the brick house. Cineroc and booster were pretty much destroyed, but the film cartridge was intact - the video was ASSUME ! |
#19
|
||||
|
||||
Quote:
AWESOME perhaps?? Darn autocorrect strikes again??? LOL OL J R
__________________
The X-87B Cruise Basselope-- THE Ultimate Weapon in the arsenal of Homeland Security and only $52 million per round! |
#20
|
||||
|
||||
Quote:
Yea, AWESOME. I do need to look closer when it corrects my spelling |
Thread Tools | Search this Thread |
Display Modes | |
|
|