FIELD: aviation.
SUBSTANCE: invention relates to a power supply circuit (6) for supplying a rocket motor (2) with at least the first liquid fuel. The mentioned power supply circuit comprises at least one buffer tank (20) for the first liquid fuel and the first heat exchanger (18), which is embedded in the mentioned buffer tank (20) and suitable for connecting to the cooling circuit (17) for cooling at least one power source to cool the mentioned heat source by transferring the heat to the first fuel.
EFFECT: improved cooling of aircraft heat sources.
11 cl, 3 dwg
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