The term propulsion system is identified in base64 scheme by the sequence cHJvcHVsc2lvbiBzeXN0ZW0=, while the MD5 signature is equal to 3481c9a812d481e35dd21d12e0ed1ac8. The ASCII encoding of propulsion system in hexadecimal notation is 70726f70756c73696f6e2073797374656d.