Common Extensible Cryogenic Engine

Aerojet Rocketdyne was contracted by NASA to develop the Common Extensible Cryogenic Engine (CECE), a deep-throttling 15,000 pound thrust class demonstrator rocket engine. A mixture of liquid oxygen and liquid hydrogen fueled the CECE.

Common Extensible Cryogenic Engine

Cryogenic propulsion is a key capability required to execute and support a variety of in-space applications, including human-lunar landings, in-space transfer systems and the exploration of Mars.

Aerojet Rocketdyne has extensive experience in cryogenic propulsion. The CECE benefited from the fundamental design of the RL10, which has earned a reputation of being one of the most reliable, safe and high-performing cryogenic upper stage engines ever developed. The RL10 is currently in production for service on the Atlas and Delta launch vehicles.

The CECE leverages the performance and reliability benefits of the RL10, offering NASA an affordable, low-risk solution to securing propulsion systems for use across multiple mission segments.

Specifications

Earth Departures

Propellants

Thrust

Specific Impulse

Dimensions

Fuel: Hydrogen
Oxidizer: Liquid Oxygen

 

Thrust: 22k–25k lb.

Specific Impulse: 450–465 sec.
Throttling: N/A
Reliability: > 0.9995
In-Space Starts (total): 50
Service Life (total): 10,000 sec.
Human Ratable: Yes 

Weight: 370–564 lb.

 

 Base Demonstrator

Propellants

Thrust

Specific Impulse

Dimensions

Fuel: Hydrogen
Oxidizer: Liquid Oxygen

 

Thrust: 15k lb.

Specific Impulse: > 445 sec.
Throttling: - 10–20:1
Reliability: > 0.9995
In-Space Starts (total): 50
Service Life (total): 10,000 sec.
 Human Ratable: Yes

Weight: 350 lb.

 

Methane Option

Propellants

Thrust

Specific Impulse

Dimensions

Propellants: CH4 / O2

 

Thrust: 15k lb.

Specific Impulse: > 350 sec.
Throttling: 3–5:1
Reliability: > 0.9995
In-Space Starts (total): 50
Service Life (total): 10,000 sec.
Human Ratable: Yes 

Weight: 370–564 lb. 350 lb.