fixed nozzle

When the convergence and divergence angles of nozzle are fixed, thrust performance is affected by the length of divergence while the flow structure is not so sensitive.

微喷管收缩角、扩张角给定时，其扩张段的长度仅影响推进性能，对流场结构影响较小。

When the distance of two nozzles was fixed, the offset of impinging stagnation point on the axis increased with the ratio of velocity and the nozzle diameter. Impact Tests on Skull and Application Study on the New Patent Airbag

当喷嘴间距一定时，轴线撞击面驻点偏移量随气速比和喷嘴直径的增大而增大.颅面骨撞击损伤的研究

Based on analyzing the principles of three flow rate modulation projects including varying throat area, unchoked nozzle, fixed flow, the advantages and disadvantages of each project are explained.

在分析了变喉面、非壅塞喷管、固定流量等三种方案的调节原理的基础上，说明了每一种调节方案的技术关键以及它们的优缺点。

Effect of tabs fixed on a convergent nozzle to the infra-red radiation of the exhausting hot jet

小突片对热射流红外辐射的影响研究