Efficient active and passive heat management system suitable for air-ground roundtrip and design method thereof

Abstract

The invention relates to an efficient active and passive heat management system suitable for an air-ground roundtrip and a design method thereof. A cooling network in the active and passive heat management system comprises a fuel cooling pipeline, a cooling heat exchanger and a liquid nitrogen cooling system. Fuel in a fuel tank flows to the cooling heat exchanger arranged at a high-temperature part through the cooling pipeline, one part of fuel enters an engine combustion chamber to provide thrust after cooling of the high-temperature part, and the other part of fuel enters the liquid nitrogen cooling system, is cooled and then returns to the fuel tank. The efficient active and passive heat management system adopts active and passive heat shielding combination of a whole aircraft, on onehand, the non-ablation repeated use requirement of the high-temperature part is ensured; on the other hand, passive heat shielding is adopted for a non-high-temperature part, the complexity of a heatproof system is reduced, and the fuel demand is reduced. The cooling network firstly passes through the lower-temperature part and then passes through the high-temperature part of an engine, and the fuel utilization rate is improved.

Description

technical field [0001] The invention relates to a high-efficiency active and passive thermal management system and a design method thereof, which are suitable for going back and forth between heaven and earth, and belong to the field of thermal management. Background technique [0002] With the gradual deepening and expansion of space development and utilization by countries all over the world, the existing space transportation system is insufficient in technical performance, making it difficult to adapt to the needs of expanding space-to-ground transportation applications. The limitation of non-reusability makes the carrier's unit payload carrying cost rise linearly with the increase of the number of launches, which seriously restricts its application. Therefore, it is imperative to develop a space transportation system with more advanced technical performance, repeated use, and meeting the requirements of "flightization" in the future. However, the harsh thermal environme...

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Problems solved by technology

At present, the concept demonstration work has been carried out around the thermal management system of the reusable space-to-ground aircraft at home and abroad, but an effective thermal management system has not yet been formed for the space-to-ground flight

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