I’m still trying to figure out how the thing doesn’t turn into a
hybrid/tribrid. Must be some significant mass flow of oxidiser/coolant.
Troy
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Brian Feeney
Sent: Monday, 3 October 2016 1:35 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: 3D Printed Plastic Test Engine
YES! ... Apologies Troy. I shouldn't have yelled like that :)
On Oct 2, 2016 10:09 PM, "Brian Feeney" <alaiadesign@xxxxxxxxx
<mailto:alaiadesign@xxxxxxxxx> > wrote:
I cannot say so for sure... :)
On Oct 2, 2016 10:04 PM, "Brian Feeney" <alaiadesign@xxxxxxxxx
<mailto:alaiadesign@xxxxxxxxx> > wrote:
YES! At least one of the chambers was made from see through plastic. The throat
may have been a metal. I cannot B-Day so for sure.
Cheers
Brian Feeney
On Oct 2, 2016 10:02 PM, "Brian Feeney" <alaiadesign@xxxxxxxxx
<mailto:alaiadesign@xxxxxxxxx> > wrote:
It has received development and I believe it flew in 2012 on a Garvey rocket.
Not necessarily directly related, but this is one of the reasons why I think
rocket engine development and related parts, needs an overhaul, new approach.
Lower cost and more rapid methods for extensive experimentation.
Cheers
Brian Feeney
On Oct 2, 2016 9:56 PM, "Brian Feeney" <alaiadesign@xxxxxxxxx
<mailto:alaiadesign@xxxxxxxxx> > wrote:
Henry do you know of or can you conjecture why the Orbitec idea did not
takeoff. It seams like a good solution, lower P drop, simpler or at least
different from a regenerative cooled engine. They were achieving 97 to 98
percent off. IIRC
Not invented hear syndrome?
Cheers
Brian Feeney
On Oct 2, 2016 9:47 PM, "Henry Spencer" <hspencer@xxxxxxxxxxxxx
<mailto:hspencer@xxxxxxxxxxxxx> > wrote:
On Mon, 3 Oct 2016, Troy Prideaux wrote:
...vortex swirling of oxygen was another method utilised by hybrid researchers
to significantly increase the regression rates...
Vortex flow in the chamber, by itself, was nothing new -- the Surveyor vernier
engines (fifty years ago) used tangential injection.
Nor is upward injection, in fact. But the combination may well have been a
genuine innovation by Orbitec.
Henry
