Double-channel ice prevention and removal device for atmospheric data probe

Abstract

The invention belongs to the technical field of an airplane ice prevention and removal, particularly discloses a double-channel ice prevention and removal device for the atmospheric data probe. The double-channel ice prevention and removal device for the atmospheric data probe is provided with an armored heater on a pipe body of the atmospheric data probe, and is provided with a rod-shaped heaterat the front edge of an inner cavity of a support arm of the atmospheric data probe. The rod-shaped heater comprises a conductive wire, an adapter, a shell and an insulating filling material, whereinthe conductive wire is placed in the shell and filled with the insulating filling material; and meanwhile, the conductive wire is switched into a lead through the adapter. The double-channel ice prevention and removal device for the atmospheric data probe can effectively improve the ice prevention and removal performance by arranging the rod-shaped heater at the front edge of the inner cavity of the support arm of the atmospheric data probe; meanwhile, the rod-shaped heater adopts the mechanical fixing mode, so that the probe material is not limited, therefore, the ice prevention and removal device can be applied to the atmospheric data probe using traditional materials such as copper alloy, nickel alloy and the like and new materials such as composite materials, titanium alloy, low melting point materials and the like, which effectively ensures the ice prevention and removal performance of the atmospheric data probe, and has great practical application value.

Description

technical field [0001] The invention belongs to aircraft anti-icing technology, in particular to a dual-channel anti-icing device for an air data probe. Background technique [0002] The air data probe is an important part of the air data system of various aircraft. It can sense the total pressure and static pressure on the aircraft and transmit the pressure signal to the atmospheric engine, which can be resolved into barometric altitude, indicated airspeed, true speed, and Mach number by the atmospheric engine. , lift speed, angle of attack and other flight atmospheric parameters. The anti-icing performance of the aircraft air data probe directly affects the function and accuracy of the pressure perception of the air data system. [0003] When the aircraft flies through the clouds at high altitude, due to the low temperature and high water content, the airframe will freeze. The air data probe realizes the pressure sensing function through the pressure hole on the surface o...

AI Technical Summary

Problems solved by technology

[0003] When the aircraft flies through the clouds at high altitude, due to the low temperature and high water content, the airframe will freeze. The air data probe realizes the pressure sensing function through the pressure hole on the surface of the probe. If the air data probe freezes, the pressure hole will Blockage will cause errors in the pressure perception of the air data probe, resulting in errors in the calculation of flight atmospheric parameters such as air pressure altitude and indicated airspeed, which will affect the flight safety of the aircraft

[0004] Traditional air data probes use a single-channel armored heating device to achieve anti-icing functions. This method is affected by welding, assembly and other processes, and cannot be applied to air data probes that use new materials such as titanium alloys, composite materials, and low-melting point materials. Satisfies the anti-icing function of the air data probe

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