on a pyrotechnics forum i posted to, one guy said: this From all the
research I've read increasing the case pressure on sugar fuel beyond
1000psi results in zero net gain of total impulse. The fuel reaches a
plateau where increased pressure does not increase its isp.
do i just leave it at 1000 psi ( ~7MPa)?
Nikolai Nielsen
On Thu, 19 Nov 2020 at 13:02, DH Barr <dhbarr@xxxxxxxxx> wrote:
What is the particular reason for wanting to run your sugar motor at 2400
psi? Have you considered what that means for heat?
On Thu, Nov 19, 2020 at 4:00 AM Nikolai Nielsen <
nielsen.nikolai86@xxxxxxxxx> wrote:
i got the alloy type.
http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MA6063T6 . im
using this calculator
[image: burst.png]
the working pressure is 16.8 in MPa
[image: image.png]
can i run an aluminium cased motor with 38mm od and 3mm wall thickness at
this pressure?
Nikolai Nielsen
On Thu, 19 Nov 2020 at 01:49, Rick Maschek <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
This will help you get there...you need to look up the yield strength
for the formula.
Barlow's Formula - Internal, Allowable and Bursting Pressure
<https://www.engineeringtoolbox.com/barlow-d_1003.html>
Barlow's Formula - Internal, Allowable and Bursting Pressure
Calculate pipes internal, allowable and bursting pressure
<https://www.engineeringtoolbox.com/barlow-d_1003.html>
On Wednesday, November 18, 2020, 03:32:34 PM PST, Nikolai Nielsen <
nielsen.nikolai86@xxxxxxxxx> wrote:
I have aluminium tubing of the 6063 / 6082 alloys measuring 40mm od, 3mm
wall thickness. I want to find its accurate burst pressure so I can use it
to make a sugar rocket motor, can anybody help me find the correct figures?
Nikolai Nielsen