双气流雾化喷嘴由中心锥和内、外套筒组成，原理图如图（a）所示。内套筒与中心锥体构成主腔体，主腔体后端通入高压氧气，内套筒壁上附有进油孔，煤油从进油孔进入主腔体并在套筒壁面上铺展成油膜，高压氧气对油膜进行加速，并将其带至喷口喷出；副腔体的注入的一次氮气在喷口处与氧气及其携带的煤油相遇，发生剪切作用，将燃油破碎、雾化。二次高压氮气切向注入技术原理图如（b）所示。二次氮气从燃烧室下端注入，经过两圈细小孔道沿燃烧室壁面切向注入燃烧室，在喷枪内壁形成旋转推进的高压气体，可以看成具有冷却效果的气膜，有效阻隔高温燃烧气与燃烧室壁面的接触，避免燃烧室经受高温考验。

Double airflow atomization nozzle consists of a central cone and inner and outer sleeve, the schematic diagram as shown in Figure (a). The inner sleeve and the central cone form the main chamber, the back end of the main chamber into the high-pressure oxygen, the inner sleeve wall with the inlet hole, kerosene from the inlet hole into the main chamber and spread on the wall of the sleeve into an oil film, high-pressure oxygen to accelerate the oil film, and bring it to the nozzle spray; secondary chamber of the injected primary nitrogen at the nozzle and oxygen and its carry kerosene encounter, shear, the fuel will be broken, atomization. The principle diagram of secondary high-pressure nitrogen tangential injection technology is shown in (b). Secondary nitrogen is injected from the lower end of the combustion chamber, through two circles of tiny orifices along the wall of the combustion chamber tangentially injected into the combustion chamber, forming a rotating propulsion of high-pressure gas on the inner wall of the gun, which can be seen as a cooling effect of the gas film, effectively blocking the contact between the high temperature combustion gas and the wall of the combustion chamber, avoiding the combustion chamber to undergo high temperature test.