L-shaped differential pressure type probe

2013 
The invention belongs to the technical field of atmosphere data measurement, and particularly relates to an L-shaped differential pressure type probe which solves the problem that the traditional L-shaped atmosphere data probe cannot measure total pressure, an angle of attack, mach number and the like simultaneously. The L-shaped differential pressure type probe is an L-shaped pipe body formed by a probe part and a support part, wherein the head of the probe part is in a conical structure; the taper of the oblique surface of the conical structure is 20-40 degrees; a total pressure measurement port is formed in the end face; and an upper pressure sensing hole and a lower pressure sensing hole are formed in the center of the conical surface of the conical structure, and communicated with an upper pressure pipeline and a lower pressure pipeline in the pipe body respectively. The probe has the following benefits that the probe is provided with no moving component, and is compact in structure and good in pneumatic consistency, a pipe head is shorter, the problems caused by related quality when a movable measurement device attempts to be consistent with an airflow direction are eliminated by measuring the angle of attack with differential pressure of the angle of attack, all inertial effects are eliminated, the response time is shortened, the reliability and sensing precision are higher, and the repeatability error is small.
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