Anti-icing and de-icing method for total temperature sensor

Abstract

The invention discloses an anti-icing and de-icing method for a total temperature sensor, and aims to provide a sensor still capable of accurately measuring the total temperature of the atmosphere atrelatively large side slip angle and attack angle. The method is realized by the following technical scheme that a cylindrical air duct of a T-shaped pipe, which extends first and then contracts, is arranged at the top end of a T-shaped strut stagnation cover connected through a flange plate (4); the side, facing air flow, in front of a cylinder is provided with an air inlet; an opening of the airinlet extends in a horn shape and contracts backwards; by taking pin shaft guide side holes tangent by circular arc transition, below the lower hole wall of a contraction hole in the junction of a throat pipe (8) of the T-shaped pipe, as fulcrums, the opening of the air inlet bends and contracts downwards in the radial direction, gradually downwards diffuses and extends to the root part of the T-shaped pipe, and then penetrates through a tail exhaust hole from the bottom wall of the root part of the T-shaped pipe to form a Laval cylindrical retardation chamber; and after icing, a temperaturesensing element exchanges heat with the surrounding environment in various ways, and meanwhile, ice is removed through a heating resistance wire used for preventing the outer wall of the retardation chamber from being iced and embedded in an interlayer of the outer surface or the outer wall of the T-shaped strut stagnation cover.

Description

technical field [0001] The invention relates to an anti-icing and de-icing method for a total temperature sensor mainly used for detecting the total atmospheric temperature at the height of an aircraft. Background technique [0002] Temperature is one of the characteristic parameters that characterize the state of an object. In order to determine the density, viscosity coefficient and flow velocity of air, etc., it is usually necessary to measure the temperature. The total temperature of the airflow is an important symbol of the simulation capability of the hypersonic test equipment, and it is also a basic parameter to determine the characteristics of the test airflow. Therefore, whether it is to calibrate the performance of the test equipment or provide test data, the total temperature measurement is required . Modern aircraft flight control requires accurate determination of the total atmospheric temperature of the environment in which the aircraft is in flight. In the f...

AI Technical Summary

Problems solved by technology

However, the error caused by the armored heating cable is relatively large during heating; in addition, there are shortcomings such as too long response time, inaccurate total temperature measurement at large sideslip angles and angles of attack, etc.

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