English: RL-10 engine characteristics. The RL-10 engine was developed under the management of the Marshall Space Flight Center (MSFC) to power the Saturn I upper stage (S-IV stage). The six RL-10 engines, which used liquid hydrogen and liquid oxygen as propellants, were arranged in a circle on the aft end of the S-IV stage.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
{{Information |Description={{en|RL-10 high energy rocket engine This picture was downloaded from NASA Marshall Spaceflight Center Image (MIX)) Exchange server: http://mix.msfc.nasa.gov/ABSTRACTS/MSFC-9801769.html}} |Source=Transferred from [http://en.wi