水陆车辆喷水推进器流场流速和含气量的实车测试技术

Real Vehicle Test Technology of Flow Field and Flow Velocity and Air Content of Amphicar's Hydraulic Propeller

针对水陆车辆喷水推进器流场流速和含气量的实车测试难题,研究测试方法并研制传感器。分析问题的主要原因,根据流体力学理论,提出在喷水推进器喷口实施测试方案,并研制探针式流速和含气量传感器、压阻式流速传感器、电极板式含气量传感器。测试结果表明:该技术能解决由于车辆强烈的振动、喷水推进器周围空间狭小、测试时不能破坏喷水推进器的流场从而导致现有的流速测试传感器或仪器无法使用的难题,设计的水陆车辆喷水推进器流场流速和含气量的实车测试技术方案在某水陆车上实施,测试精度能达到满意的效果。

To solve the real vehicle test＇s difficult problem of the flow field and the flow velocity and the air content of the amphicar＇s hydraulic propeller, a test method was studied and a sensor was manufactured. According to the theory of the hydrodynamics, a resolution was executed on hydraulic propeller＇s spout and probe-style＇s flow velocity and the air content sensor, and the piezoresistive flow velocity sensor and the electrode plate air content sensor were manufactured after analyzing the problem＇s main reason. The test indicated that this technology could solve the existing flow rate test sensor or instrument unable using problem arising from the fierce shaking and the narrow space around the hydraulic propeller and the actual flow field cannot be damaged while testing. The real vehicle test technology of the flow rate and the air content of the amphicar＇s hydraulic propeller were implemented on some amphicar and the test precision was satisfied.