Boosting impacting fanjet

The utility model discloses a turbofan boosting scramjet engine. A plurality of scramjet engines are fixed around a turbofan engine. External intake passage of the scramjet engine is communicated with an air incoming tube of the scramjet engine, and the air incoming tube of the scramjet engine is connected with the combustion chamber of the scramjet engine, while the combustion chamber of the scramjet engine is connected with the nozzle of the scramjet engine. Nozzles of both the scramjet engine and the turbofan engine are connected with a tail spray pipe. An air flow guide vane is arranged between the external intake passage and the air incoming tube of the scramjet engine. Part of the external intake passage on inner profile of the air flow guide vane is connected with the air incoming tube of the scramjet engine. An inner air cooling layer is arranged between the turbofan engine and the scramjet engine, and the outer side of the scramjet engine is provided with an outer air cooling layer and a heat insulating layer. In the utility model, a plurality of scramjet engines are arranged around the existing turbofan engine on plane without rotary components. The utility model is characterized in simple and reliable structure, light weight, large thrust, and adequate combustion of fuel, good environment protection effect and long traveling in supersonic speed. 本实用新型公开了一种涡扇助推冲压发动机，若干冲压发动机固定在涡扇发动机周围，冲压发动机外进气涵道与冲压发动机进气道相通，冲压发动机进气道连接冲压发动机燃烧室，冲压发动机燃烧室连接冲压发动机喷口，冲压发动机喷口和涡扇发动机喷口连接尾喷管，冲压发动机外进气涵道与冲压发动机进气道之间有气流导向叶片，气流导向叶片内侧的涡扇发动机外涵道连接冲压发动机进气道，涡扇发动机与冲压发动机之间有内冷却空气层，冲压发动机外侧有外冷却空气层、隔热层。利用现行飞机上使用的涡扇发动机将若干冲压发动机固定在其周围，在结构上无旋转零件，简单可靠，重量轻、推力大，燃油燃烧充分，有利于环保，能长时间高超音速巡航。