Multi-cylinder array freezing detection device

Abstract

The invention discloses a multi-cylinder array freezing detection device. The multi-cylinder array freezing detection device comprises a cylinder array arranged on a testing surface, wherein the cylinder array comprises three cylinders which are sequentially arranged along the same axis and have different diameters; the diameters of cylinders in the cylinder array are gradually increased from one end to the other end; the surfaces of the two adjacent cylinders are not in contact with each other; the inner part of each cylinder is of a cavity structure; each cavity structure is internally provided with a vibration part; an acceleration transducer is arranged on the surface of each cylinder; the cylinders, the vibration parts and the acceleration transducers are connected with a signal acquisition system. According to the multi-cylinder array freezing detection device, a traditional mechanical freezing detection method is combined, the defect that super-cooled water drops with large and small scales cannot be distinguished is overcome and the advantage of traditional mechanical freezing detection is sufficiently expressed; two contradictions of detection of the large-scale super-cooled water drops and the small-scale super-cooled water drops are relatively coordinated and the freezing detection problem of the surface of an aircraft is solved relatively well, so that the multi-cylinder array freezing detection device has practical significance on design of an aircraft anti-icing / deicing system and guarantees of flight safety.

Description

technical field [0001] The invention relates to the field of aerodynamics, in particular to a method and device for detecting icing on various objects that are prone to icing under high-altitude icing meteorological conditions. Background technique [0002] Icing is a physical phenomenon that widely exists in flight practice, and it is one of the main hidden dangers that cause flight safety accidents. When the aircraft is flying under the icing weather conditions below the freezing point or near the freezing point, the supercooled water droplets in the atmosphere hit the surface of the aircraft, and the icing phenomenon is easy to occur on the wings, tail, rotor, air inlet, etc. Occurs on the surface of windshield, radome, instrument sensor and other components. The icing of the aircraft not only increases the weight of the aircraft, but also destroys the aerodynamic shape of the aircraft surface, changes the flow field around it, and destroys the aerodynamic performance, r...

AI Technical Summary

Problems solved by technology

Moreover, this kind of icing detector may play a certain role in distinguishing large and small-scale supercooled water droplets under the flight condition of zero flight angle of attack or very small flight angle of attack, but under the condition of larger flight angle of attack, there are The measurement error is large, and it is even impossible to distinguish between large and small supercooled water droplets

Images