Self-adaptive melting loss prevention airspeed head clamp

A pitot, self-adaptive technology, applied in the aviation field, can solve problems such as melting damage of pitot tube clamps and inconsistent display information, and achieve the effect of avoiding melting damage, simplifying settings, and avoiding melting damage of pitot tube clamps

Active Publication Date: 2020-06-26
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unplugging the circuit breaker before the test will cause the actual display information of the aircraft to be inconsistent with expectations; in addition, operating the circuit breaker when unexpected heating occurs during the test, because it is a manual operation, if the operator does not respond in time, the pitot tube will Fixture melting is still unavoidable

Method used

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  • Self-adaptive melting loss prevention airspeed head clamp
  • Self-adaptive melting loss prevention airspeed head clamp
  • Self-adaptive melting loss prevention airspeed head clamp

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Embodiment Construction

[0050] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be understood as insuffici...

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Abstract

The invention relates to a self-adaptive melting loss prevention airspeed head clamp. The airspeed head clamp comprises a sleeve, a telescopic sealing ring, a thermistor, a locking part and a currentlimiting switch, wherein the sealing ring is arranged between the sleeve and the airspeed head and is configured to be in contact with the airspeed head in an extending state and not in contact with the airspeed head in a retracting state, the thermistor is embedded in the sealing ring, the locking piece acts on the sealing ring, and the current limiting switch is connected to the thermistor and the locking piece; when the temperature of the sealing ring is lower than or equal to the temperature threshold, the resistance value of the thermistor does not exceed the critical value, the current limiting switch is closed, the locking part is locked, and therefore the sealing ring is in an extending state. When the temperature of the sealing ring is higher than a temperature threshold, the resistance value of the thermistor exceeds a critical value, the current limiting switch is switched off, the locking piece is separated, and therefore, the sealing ring is in a retracted state. The invention has the following beneficial technical effects that the sealing ring and the airspeed head are separated in time before the airspeed head clamp is melted and damaged, and the airspeed head clampis effectively prevented from being melted and damaged.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to an adaptive and anti-melt pitot clamp. Background technique [0002] A pitot is a device on an aircraft that measures airspeed. The pitot tube can feel the total pressure of the airflow (also known as the total pressure), and transmit the measured pressure data to the air data computer. Combined with the static pressure felt by the static pressure hole, the airspeed of the aircraft can be calculated and sent to relevant users systems and flight instruments. [0003] In the ground test of the aircraft, the pitot tube also needs to be tested. However, during the ground test of the aircraft, the pitot tubes often heated up unexpectedly, causing the connected pitot tube clamps to be melted, and the pitot tubes needed to be replaced. [0004] In the prior art, the damage of the pitot clamp is mainly avoided by manually operating the circuit breaker. However, unplugging the circu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02G01P21/02
CPCG01P21/025H02H9/026
Inventor 袁文铎汤华杨世鹏王令宙孟晨王燕玲
Owner COMAC
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