Fuel thermal capacitance for pulsed platform loads

A system, comprising:

• a fuel tank;
• a reservoir;
• a cooling system;
• an intermittent heat generating device;
• the intermittent heat generating device having a peak heat output greater than a peak cooling capacity of the cooling system;
• a first fuel loop, a second fuel loop and a fuel charging line;
• the first fuel loop comprising a recirculating path through a first heat exchanger in thermal communication with the cooling system, a first pump and the reservoir;
• the second fuel loop comprising a second recirculating path through a second pump, a second heat exchanger in thermal communication with the intermittent heat generating device and a variable mixing valve;
• the variable mixing valve having a first input, a second input and an output, the output to the second fuel loop, the first input from the first fuel loop and the second input from the second fuel loop;
• a ratio of the second input over the first input being variable;
• the fuel charging line comprising a fuel path between the reservoir and the fuel tank and a reservoir charge pump in the fuel path;
• and,
• the first fuel loop in fuel connection with the second fuel loop via the mixing value and a return line;
• the return line communicating from a fuel outlet of the intermittent heat generating device to a check valve on the first fuel loop.