Partial exhaust bottoming cycle

A turbine engine assembly comprising:

• a core engine defining a core flow path and configured to generate an exhaust gas flow;
• a fuel system configured to provides a flow of cryogenic fuel to the core engine;
• a condenser configured to receive a partial portion of the exhaust gas flow and to extract water from the partial portion of the total exhaust gas flow to generate a water flow;
• and
• a bottoming cycle comprising an evaporator configured to communicate thermal energy between the partial portion of the exhaust gas flow, a thermal transfer medium, and the water flow generated in the condenser, the evaporator is further configured to generate a steam flow from the water flow for injection into the core flow path.

A method of operating a turbine engine comprising:

• generating an exhaust gas flow with a core engine including a compressor where inlet airflow is compressed, a combustor where the compressed inlet airflow is mixed with fuel and ignited to generate the exhaust gas flow that is expanded through a turbine section and exhausted through an aft turbine exit;
• cooling a partial portion of the exhaust gas flow drawn from a location upstream of the aft turbine exit with a thermal transfer medium circulating with a closed circuit of a bottoming cycle;
• extracting water from the partial portion of the total exhaust gas flow in a condenser;
• and
• generating a steam flow from the extracted water with thermal energy from the exhaust gas flow.