Yeah, NASA never really believed our 97-98% number, but apparently they
were able to duplicate it.
Interesting - that paper has more detail about the Aerojet engine that
won the next phase of that contract. (We didn't bid - they'd made the
requirements impossible for a private company that didn't want to give
away its IP.) Liquid-liquid in an ablative chamber, just like NASA
wanted all along - and apparently it had a really hard time even getting
close to the Isp target without overheating and erosion problems -
needed too much film cooling.
Told 'em so! Oh well.
Henry
On 2/22/2018 3:50 PM, John DeMar wrote:
Some pertinent information here:
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100033741.pdf
NASA/MSFC had 98% c*eff with a 20" long chamber.
-John DeMar
https://www.linkedin.com/in/jsdemar/
On Thu, Feb 22, 2018 at 2:19 PM, Carl Tedesco <ctedesco@xxxxxxxxxxxxxx <mailto:ctedesco@xxxxxxxxxxxxxx>> wrote:
Anyone have know any useful values for L* for LOX/Methane? I have
searched all the common literature (Sutton, Hill & Peterson and the
www), but can’t find anything readily. I used RPA and it came up
with 32.88 in.
--- Carl Tedesco