Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 48 users online :: 4 registered, 0 hidden and 44 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Rocket cones (NO SOLID FUEL, just the nose cone)

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
Sponsored 
  • Author
    Message

Rocket cones (NO SOLID FUEL, just the nose cone)

Unread postAuthor: Pilgrimman » Wed Aug 15, 2007 1:17 am

I have a small Estes rocket from physics class last year, and I recently made the discovery that the nosecone fits perfectly in 1 1/4" PVC. Needless to say, in 48 hours time, many things will be destroyed, and damage pics will be posted. It'd be faster, but I have to work early tomorrow, I don't have the parts at home, and I'll be at work until at least 5 O'clock, so the hardware store will be closed.

I also thought of filling the hollow plastic with something heavy for penetration. If anyone has one of these model rockets, I'd suggest testing the nosecone as ammo!

Thoughts?
  • 0

User avatar
Pilgrimman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 481
Joined: Thu Jun 28, 2007 1:10 pm
Location: Grants Pass, OR
Reputation: 0

Unread postAuthor: spud yeti » Wed Aug 15, 2007 2:07 am

Sounds pretty cool. What you could to to add strength, weight and peneration potential to it is dip the nose in molten lead :twisted:
I can think of 100's of ideas, but they all against forum rules, so I'll keep them to myself.
Nice "find" though
  • 0

really good quote/phrase here
User avatar
spud yeti
Brigadier General
Brigadier General
 
Posts: 1030
Joined: Tue May 08, 2007 1:41 pm
Location: Cape town south africa
Reputation: 0

Unread postAuthor: Killjoy » Wed Aug 15, 2007 2:43 am

cast the nose cone in plaster (so you won't have to stop experimenting when the nose cone breaks, but fill the inside of the nose cone with modeling clay, to make the cast solid), then you can make many nose cones out of different materials like lead, wax, hell even steel, you'd just have to make the mold out of sand instead and use thermite.

Oh good idea, buy some tungston rod and then cast it in steel using the thermite/sand method, that would give you some great "penetration" haha.
  • 0

Stanford Class of 2012

"In the end our society will be defined not only by what we create, but what we refuse to destroy"- John Sawhill

Killjoy
Brigadier General
Brigadier General
 
Posts: 1053
Joined: Sun Nov 12, 2006 12:51 am
Location: New Mexico
Reputation: 0

Unread postAuthor: Pilgrimman » Wed Aug 15, 2007 12:27 pm

I had already panned on the plaster thing, but I never really thought about filling it with metal! :twisted:

@spud yeti

I have hundreds of ideas as well, and, coincidentally, they're all against forum rules too! Evil minds FTW!! :twisted: :twisted: :twisted:
  • 0

User avatar
Pilgrimman
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 481
Joined: Thu Jun 28, 2007 1:10 pm
Location: Grants Pass, OR
Reputation: 0

Unread postAuthor: spud yeti » Wed Aug 15, 2007 12:30 pm

I have hundreds of ideas as well, and, coincidentally, they're all against forum rules too! Evil minds FTW!! :twisted: :twisted: :twisted:

Muahahahahaha!

Can we get a picture of the cone though pretty please?
  • 0

really good quote/phrase here
User avatar
spud yeti
Brigadier General
Brigadier General
 
Posts: 1030
Joined: Tue May 08, 2007 1:41 pm
Location: Cape town south africa
Reputation: 0

Unread postAuthor: paaiyan » Wed Aug 15, 2007 12:39 pm

Well I like the plaster cast idea, but I have one for that. Make the cast and use lead, but see if you can find a way to make hollowpoints.

EDIT: Then you should make some ballistics gel :twisted:

EDIT EDIT: You could also have a sharpened rod and put it in the mould, then pour some kind of low-density foam around it maybe? That would be pretty good.
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Unread postAuthor: spud yeti » Wed Aug 15, 2007 1:15 pm

Yes, you could use a sharpened bolt/metal rod and then use polyurathane/resin/epoxy/bondo/wax/metal/poo( :D ) or another material to mold around the cone. Then you could drill out the back to make it lighter and more aero-efficient.
  • 0

really good quote/phrase here
User avatar
spud yeti
Brigadier General
Brigadier General
 
Posts: 1030
Joined: Tue May 08, 2007 1:41 pm
Location: Cape town south africa
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: paaiyan » Wed Aug 15, 2007 1:19 pm

spud yeti wrote:Yes, you could use a sharpened bolt/metal rod and then use polyurathane/resin/epoxy/bondo/wax/metal/poo( :D ) or another material to mold around the cone. Then you could drill out the back to make it lighter and more aero-efficient.


No no no, I mean low density foam. Maybe like that orange foam crap they use to seal stuff, it's called Great stuff or somethign like that. But something like that, the idea being that you can launch a lower density projectile at a higher speed, then when it strikes the target, that foam would break up and allow the sharpened (insert object) to penetrate on it's own.
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Unread postAuthor: spud yeti » Wed Aug 15, 2007 1:34 pm

Ja thats actually a really cool idea, but its not durable (at all) so I was just giving some options :wink:
  • 0

really good quote/phrase here
User avatar
spud yeti
Brigadier General
Brigadier General
 
Posts: 1030
Joined: Tue May 08, 2007 1:41 pm
Location: Cape town south africa
Reputation: 0

Unread postAuthor: paaiyan » Wed Aug 15, 2007 1:38 pm

spud yeti wrote:Ja thats actually a really cool idea, but its not durable (at all) so I was just giving some options :wink:


Well, durability wasn't the idea... The idea was for the foam to be a sabot pretty much, then break off upon impact, while the projectile continues on it's path.
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Unread postAuthor: spud yeti » Wed Aug 15, 2007 1:57 pm

Yeah sure, I got the whole concept and idea; and I like it. I was just elaborating and giving my 2 cents. Is foam expensive?
  • 0

really good quote/phrase here
User avatar
spud yeti
Brigadier General
Brigadier General
 
Posts: 1030
Joined: Tue May 08, 2007 1:41 pm
Location: Cape town south africa
Reputation: 0

Unread postAuthor: paaiyan » Wed Aug 15, 2007 2:09 pm

Well, there's some binary stuff they use for boats that's about 20 bucks for enough to make two cubic feet. That's pretty pricey, but there's probably other stuff.
  • 0

"Who ever said the pen was mightier than the sword, obviously, never encountered automatic weapons."
-General Douglass MacArthur

Read my dog's blog - Life of Kilo
User avatar
paaiyan
Major General
Major General
 
Posts: 2140
Joined: Wed Dec 27, 2006 10:03 pm
Location: Central Oklahoma
Country: United States (us)
Reputation: 1

Return to Construction Materials/Ammo Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'