I am fasinated by Aerojet. The CECE, has a total qualified burn time of 10,000 seconds and with a total of 50 restarts. The LOX/LH2 engines have a great performance with a specific impulse of > 445.
Additional questions include: 1) Is the RL10B-2 used as a testbed for the CECE? Are the CECE, physical dimension the same as the as the RL10B-2?
2) Do the engines have gimble capability?