#31
|
|||
|
|||
Hi there!
that's MY Goblin 8" Upscale. here's a link to my Level 3 website with some pics and a video, etc. http://home.usamedia.tv/robwegner/images/L3 Enjoy! |
#32
|
|||
|
|||
Hi there,
Its nice to see my project appearing here. Thats my rocksim of a BT80 based Two Stage Goblin. Check out this thread on The Rocketry Forum. It sims out to around 2300ft on 8 D12s. It is almost finished, and should fly at the end of September. Check the thread for more information and pictures. Just saying, you might want to include credit with pictures from other websites in the future. I look foward to seeing how your Goblin turns out! Phil |
#33
|
||||
|
||||
Well, I decided rather than stage my heavy 2X Goblin, I now have my first two F motors to try it out. Now to figure out how to use these copperhead ignitors. The motors are Aerotech Econojet F21-4W. I put one motor in the mount and weighed it at 16 ounces. Any idea if it will make 800' on one of these? Thanks Craig for all the help you have given me.
|
#34
|
||||
|
||||
Motors for 2X Goblin
Quote:
Go with the F21W-6 instead -- the 4-second delay is an instant shredder with a 77 fps Dv... Deploys about 12" pre-apogee with a 12.4 fps Dv. Nice and smooth for this model...
__________________
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 |
#35
|
||||
|
||||
Quote:
I re-simmed the model with an additional 3 oz of mass, to bring the weight up to ~16 oz. You should still use the 6-second delay instead of the 4. The overall altitude drops to 1200', and the Dv becomes 11.3 fps, with deployment still pre-apogee by about 3". Enjoy that puppy!
__________________
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 |
Thread Tools | Search this Thread |
Display Modes | |
|
|