There were hints in the data that C*_eff _might_ have been dropping off
a percent or so at the bottom end of the L* range under test. Or, it
might have been measurement noise that just coincidentally dropped a
percent or so at the shortest chamber test length.
My 'umble opinion, we were being careful enough about the data
collection that it probably was the start of C*_eff dropping off.
Woulda taken more test runs than we had budget for to prove it though;
we moved on.
Henry V
On 2/22/2018 2:54 PM, Doug Jones (Redacted sender randome for DMARC) wrote:
In trombone chamber testing for the 5M15, we went as low as 18" L* and saw no dropoff in C*, with C*_eff about .96 to .98 in multiple runs.
If your injection is gas-liquid microcoaxial, the combustion is complete about 3" from the injector face, I don't know how to make it go slower than that.
On 2018-02-22 1:19 PM, Carl Tedesco 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