Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Weather-Cocked > FreeForAll
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-22-2017, 12:02 AM
blackshire's Avatar
blackshire blackshire is offline
Master Modeler
 
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default *Clear* C6-7 motor (link)

Hello All,

Here is an interesting video (see: www.youtube.com/watch?v=_xvVJQSGHts ) of a *clear* Estes C6-7 motor being fired, shown at several frame speeds. The production of the glass tubing-cased transparent motor is also shown. I wonder when Estes will start selling these? :-)
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
Reply With Quote
  #2  
Old 05-22-2017, 03:25 PM
tbzep's Avatar
tbzep tbzep is offline
Dazed and Confused
 
Join Date: Mar 2005
Location: TN
Posts: 11,610
Default

I know he drilled a little to clean the nozzle, but you can see that the thrust vectored back and forth during the burn. I have some still photos that show a D12 vectored considerably more, enough that it helped tip over a nose heavy rocket and cause it to crash.
__________________
I love sanding.
Reply With Quote
  #3  
Old 05-23-2017, 04:07 AM
blackshire's Avatar
blackshire blackshire is offline
Master Modeler
 
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default

Quote:
Originally Posted by tbzep
I know he drilled a little to clean the nozzle, but you can see that the thrust vectored back and forth during the burn. I have some still photos that show a D12 vectored considerably more, enough that it helped tip over a nose heavy rocket and cause it to crash.
I thought of GH and B14s when I saw him drilling that motor... :-) I remember seeing a picture of your Astron Omega doing a "gravity turn" (with some unwanted TVC [Thrust Vector Control] help, after part of the nozzle eroded suddenly) before it pranged--Ouch!
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
Reply With Quote
  #4  
Old 05-23-2017, 06:32 PM
luke strawwalker's Avatar
luke strawwalker luke strawwalker is offline
BAR
 
Join Date: Dec 2007
Location: Needville and Shiner, TX
Posts: 6,134
Default

Neat but needlessly difficult in the execution... Milling off the casing and then machining down the propellant slug to epoxy it inside glass... I guess for purposes of the video of ACTUAL mass produced model rocket propellant it's pretty cool, but if the idea is to just see a model rocket engine burn through a clear casing, this video below does it MUCH easier and safer (using a clear plastic tube)... (from 4:45 onward).

https://www.youtube.com/watch?v=12fR9neVnS8&t=288s

Later! OL J R
__________________
The X-87B Cruise Basselope-- THE Ultimate Weapon in the arsenal of Homeland Security and only $52 million per round!
Reply With Quote
  #5  
Old 05-23-2017, 08:50 PM
blackshire's Avatar
blackshire blackshire is offline
Master Modeler
 
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default

Quote:
Originally Posted by luke strawwalker
Neat but needlessly difficult in the execution... Milling off the casing and then machining down the propellant slug to epoxy it inside glass... I guess for purposes of the video of ACTUAL mass produced model rocket propellant it's pretty cool, but if the idea is to just see a model rocket engine burn through a clear casing, this video below does it MUCH easier and safer (using a clear plastic tube)... (from 4:45 onward).

https://www.youtube.com/watch?v=12fR9neVnS8&t=288s

Later! OL J R
I agree, but for a different reason. It isn't necessary to mill off the rolled paper casing of a black powder (or even composite propellant, in the case of the new Klima motors) model rocket motor--I have peeled off the parallel-wound paper casings. Also:

Thank you for posting the video of the "scratch-made" clear-cased motor. Another type of clear motor that I've seen pictures and videos of is the acrylic-fuel hybrid motor, in which the "integral fuel grain/casing" consists of an acrylic cylinder with a void running down its center (these see-through hybrid rocket motors are also sometimes featured in science museums as "hands-on" rocket demonstration exhibits).
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
Reply With Quote
  #6  
Old 05-24-2017, 09:01 PM
luke strawwalker's Avatar
luke strawwalker luke strawwalker is offline
BAR
 
Join Date: Dec 2007
Location: Needville and Shiner, TX
Posts: 6,134
Default

Quote:
Originally Posted by blackshire
I agree, but for a different reason. It isn't necessary to mill off the rolled paper casing of a black powder (or even composite propellant, in the case of the new Klima motors) model rocket motor--I have peeled off the parallel-wound paper casings. Also:

Thank you for posting the video of the "scratch-made" clear-cased motor. Another type of clear motor that I've seen pictures and videos of is the acrylic-fuel hybrid motor, in which the "integral fuel grain/casing" consists of an acrylic cylinder with a void running down its center (these see-through hybrid rocket motors are also sometimes featured in science museums as "hands-on" rocket demonstration exhibits).


You're welcome.

Yep, I've seen vids of those too.

Hope you're doing well blackshire!

Later! OL J R
__________________
The X-87B Cruise Basselope-- THE Ultimate Weapon in the arsenal of Homeland Security and only $52 million per round!
Reply With Quote
  #7  
Old 05-25-2017, 12:40 AM
blackshire's Avatar
blackshire blackshire is offline
Master Modeler
 
Join Date: Jan 2009
Location: Fairbanks, Alaska
Posts: 6,507
Default

Quote:
Originally Posted by luke strawwalker
You're welcome.

Yep, I've seen vids of those too.

Hope you're doing well blackshire!

Later! OL J R
Thank you--my leg wounds *finally* closed, after years! I'll have to use a leg sequential-compression pump (along with my compression garments) for the rest of my life to keep the legs from swelling, but that's a small price to pay for keeping my legs (and hopefully avoiding another life-threatening MRSA and pseudomonas infection). Also:

If you know anyone who has lymphedema and/or veinous edema in their legs, I discovered an almost embarrassingly-simple solution to the persistent open wounds problem that could help them. For years I had sat and slept (I have to sleep in a recliner chair; I can't sleep on a bed because my back locks up if I try, due to ankylosing spondylitis) with my feet on a box that served as a hassock, but my legs were angled about 30 degrees down from horizontal. Just switching to a taller hassock that keeps my legs almost horizontal resulted in my leg wounds closing within less than three weeks!
__________________
Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
http://www.lulu.com/content/paperba...an-form/8075185
http://www.lulu.com/product/cd/what...of-2%29/6122050
http://www.lulu.com/product/cd/what...of-2%29/6126511
All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com.
NAR #54895 SR
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 06:06 AM.


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