View Single Post
  #11   Spotlight this post!  
Unread 05-10-2016, 09:15
IKE's Avatar
IKE IKE is offline
Not so Custom User Title
AKA: Isaac Rife
no team (N/A)
Team Role: Mechanical
 
Join Date: Jan 2008
Rookie Year: 2003
Location: Michigan
Posts: 2,148
IKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond reputeIKE has a reputation beyond repute
Re: Transparent Air Tank

Quote:
Originally Posted by RoboChair View Post
2 liter bottles are good to about 120psi before failure, 20oz is probably a fair bit higher. You can do some destructive tests first. I would suggest clear polycarbonate tubing which you can buy from McMaster as you can use pipe fittings with it.

Alternatively just use a long piece of clear hose.
I too was thinking along these lines. Most safety standards with regards to pressure vessels want a 2.3 Safety factor, so if the burst pressure is 120 PSI, then filling up to 50 PSI would be the responsible thing to do. I know for water rocket competitions, a lot of folks regularly fill them to 70 PSI (about a 1.5 SF).

The stresses should be lower on a 1 liter bottle which may be able to get a higher rating.
Reply With Quote