#31
|
||||
|
||||
Quote:
Seriously, I fully expect Estes to roll out 2 new stagers to use that motor. An uprated EE Express would be perfect. In my mind, the BT-55 gives it just the right mix of high performance while still being recoverable (versus a minimum diameter bird, for example). Anyway, if I'm Estes, for stagers for these new motors, I'm thinking EE Express, Omega-E and maybe a BT-55 upscale Delta Star. Plus, for single stage birds, a Cherokee-E would be awesome (I need to build one of those anyway. In my naivete all those years ago when I cloned mine, I put a motor block in it and thus don't fly it on any motors longer than 70mm.) Doug .
__________________
YORF member #11 |
#32
|
||||
|
||||
This is the best news to come out of Estes in a LONG time. Would have rather had like an E20 to E24 also, but this is a START.
Does anyone know if they will be keeping the E9 in the line too or is this a replacement ?
__________________
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, and HAVOC ! |
#33
|
||||
|
||||
Quote:
Doug .
__________________
YORF member #11 |
#34
|
||||
|
||||
Me want Omega-E !!!!!!!!
__________________
-Fred Shecter NAR 20117 (L2) Southern California Rocket Association, NAR Section 430 |
#35
|
||||
|
||||
Quote:
I just worked up a BT-60 size version with really nice flight numbers (sweet, low Dv numbers - below 7 FPS) on the E12-6. It's not half bad on the D12-5, either, just high on the Dv. It will be posted in the BARCLONE area...
__________________
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 |
#36
|
||||
|
||||
Here is a 2 stage run E12-E12 in a stock minimum diameter rocket from U.S. Rockets.
Tandem Goodness Summary: Lengths: 32/28" CDr's: 0.65/0.45 cd Stage 1 mass: 140+60+60 = 0.574# Stage 2 mass: 120+60 = 0.397# BOA+0.20s 448 ft BOV+0.20s 269 fps SUMMARY TABLE: E12-E12 LIFT-OFF WEIGHT -LBS = 0.3975 MAX ALTITUDE -FT = 4101.2 MAX ALTITUDE -MILES = 0.7817 MAX MACH NUMBER = 0.5842 MAX VELOCITY -FT/SEC = 605.11 MAX VELOCITY -MPH = 412.58 BURNOUT VELOCITY -FT/SEC= 598.27 BURNOUT ALTITUDE -FT = 1594.89 MAX ACCELERATION -G'S = 17.14 COAST TIME -SEC = 11.05 4101 feet with no piston launcher on the booster stage. Attached is the detailed rtf file. Tech Jerry |
#37
|
|||
|
|||
Bill has a very interesting point.
The E12 would be a "more generally useful" motor than the E9. Less chance of it being put in the "wrong" rocket. It couldn't hurt to buy a few extra packs of E9s . . . Hmmm, could an upscaled Comanche be called the "EEE! Express?" |
#38
|
||||
|
||||
Quote:
Comanch-E 3
__________________
-Fred Shecter NAR 20117 (L2) Southern California Rocket Association, NAR Section 430 |
#39
|
||||
|
||||
Quote:
Comanch-E BYE-BYE |
#40
|
|||
|
|||
Quote:
NO need to upscale, just stretch the booster lengths. Seriously, though, would a stack of 3 x E12 ( or E12 / E12 / E9 ) boost fast enough ? don;t have a rocksim file here to try to play with, but might be alil slow off the pad due to the extra weight ? When we used to fly the 5 stage rack rockets, ( 5 x D12's ) . a DE12 was not a good boost motor, but a D20 to 4 x D12's worked nice. got it moving. As for Commanche 3 - lost mine on D12-0 to old Aerotech E10-0 ( direct staged ),direct staged to a D12-7 ... tipped off some and bye bye birdie...... ~ AL |
Thread Tools | Search this Thread |
Display Modes | |
|
|