Conformal icing detection device based on flexible multilayer structure

Abstract

The invention belongs to the field of airplane anti-icing and de-icing systems, and relates to a shape-preserving icing detection device based on a flexible multi-layer structure, which comprises a first-layer heating belt, a second-layer heating belt and a series of temperature sensors. The first layer of heating belt is installed on the surface of an airplane, and the second layer of heating belt is close to the first layer of heating belt, so that a second layer of heating layer of the multi-layer structure icing detector is formed. A series of temperature sensors are fixed to the first layer or the second layer of the heating belt and used for detecting temperature distribution at different positions of the device and judging or recognizing the space temperature distribution condition to indicate the icing environment where the airplane is located. The structure has the characteristics of light weight, conformal installation and capability of distinguishing different icing conditions, so that the aircraft can take corresponding measures to cope with different icing conditions, and the flight safety is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of aircraft anti-icing and de-icing systems, and relates to a conformal icing detection device based on a flexible multi-layer structure. Background Art

[0002] Ice on the aircraft surface poses a huge threat to flight safety. Appendix C of the Federal Aviation Regulations FAR25 stipulates conventional icing conditions, while Appendix O stipulates supercooled large droplet icing conditions. Traditional ice detection devices cannot distinguish between Appendix C and Appendix O, which means that the aircraft lacks a response method when it is in Appendix O icing conditions, posing a potential threat to flight safety. Summary of the invention

[0003] In order to solve the technical problem that traditional ice detectors cannot distinguish different icing conditions, the present invention provides a flexible multi-layer conformal ice detection device.

[0004] A conformal ice detection device based on a flexible multi-layer structure is provided, comprising a controller 8 and a flexible multi-layer structure; the flexible multi-layer structure is a multi-layer structure in which an insulating layer 1, a first heating layer 2, an insulating layer 1, a second heating layer 3 and an insulating layer 1 are stacked;

[0005] A first temperature sensor 4 is embedded in the first heating layer 2, and a second temperature sensor 5 is embedded in the second heating layer 3;

[0006] The first temperature sensor 4, the second temperature sensor, the first heating layer 2 and the second heating layer 3 are all controlled by the controller 8;

[0007] The flexible multilayer structure is arranged on the leading edge surface of the wing, the first temperature sensor 4 is used to collect the temperature of the first heating layer 1, and the second temperature sensor 5 is used to collect the temperature of the second heating layer 2;

[0008] Relative to the leading edge surface, the first heating layer is outside the second heating layer; the controller determines whether ice is formed according to the collected data of the first temperature sensor 4 and the second temperature sensor 5.

[0009] The insulating layer 1 is located between the heating layer 1 and the heating layer 3, and has good electrical insulation performance and good thermal conductivity;

[0010] Further, the power density of the first heating layer 1 is higher than the power density of the second heating layer 3;

[0011] Furthermore, the controller has a processor and a non-volatile memory, which can communicate information with each other. The memory stores reference data for determining whether the leading edge of the wing is in an icing environment and controlling the heating layer to start heating.

[0012] Furthermore, there are multiple first temperature sensors and multiple second temperature sensors.

[0013] The present invention has at least the following advantages and beneficial effects:

[0014] The present invention proposes a flexible multi-layer conformal ice detection device, which can provide temperature conditions of the heating area for collecting and judging whether the aircraft is iced. It has the characteristics of light weight, high detection accuracy, conformal installation and integration with composite materials, and solves the shortcomings of traditional ice detectors such as heavy weight, poor de-icing effect, large heating range and high energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a complete structural cross-sectional view of the present invention:

[0016] Figure 2 This is a schematic diagram of the installation of the present invention:

[0017] Figure 3 This is a cross-linking relationship diagram of the system of the present invention.

[0018] Among them: 1-insulating layer, 2-first heating layer, 3-second heating layer, 4-first temperature sensor, 5-second temperature sensor, 6-icing detection device, 7-wing leading edge, 8-controller. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme of the present invention will be described in more detail below in conjunction with the drawings of the present invention. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below are exemplary and are intended to explain the present invention, but cannot be used as limitations of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without making major innovations all belong to the protection scope of the present invention. The embodiments of the present invention are described in detail below.

[0020] A conformal ice detection device based on a flexible multi-layer structure is provided, comprising a controller 8 and a flexible multi-layer structure; the flexible multi-layer structure is a multi-layer structure in which an insulating layer 1, a first heating layer 2, an insulating layer 1, a second heating layer 3 and an insulating layer 1 are stacked;

[0021] A first temperature sensor 4 is embedded in the first heating layer 2, and a second temperature sensor 5 is embedded in the second heating layer 3;

[0022] The first temperature sensor 4, the second temperature sensor, the first heating layer 2 and the second heating layer 3 are all controlled by the controller 8;

[0023] The flexible multilayer structure is arranged on the leading edge surface of the wing, the first temperature sensor 4 is used to collect the temperature of the first heating layer 1, and the second temperature sensor 5 is used to collect the temperature of the second heating layer 2;

[0024] Relative to the leading edge surface, the first heating layer is outside the second heating layer; the controller determines whether ice is formed according to the collected data of the first temperature sensor 4 and the second temperature sensor 5.

[0025] The insulating layer 1 is located between the heating layer 1 and the heating layer 3, and has good electrical insulation performance and good thermal conductivity;

[0026] The power density of the first heating layer 1 is higher than the power density of the second heating layer 3;

[0027] The controller has a processor and a non-volatile memory, which can communicate information with each other. The memory stores reference data for determining whether the leading edge of the wing is in an icing environment and controlling the heating layer to start heating.

[0028] There are plural first and second temperature sensors.

[0029] In view of the problems that the current ice detectors cannot distinguish different icing conditions, are heavy and have complex structures, a flexible multi-layer conformal ice detection device is proposed. The main technical problems it solves are as follows:

[0030] 1) Have the ability to distinguish between the first icing condition and the second icing condition;

[0031] 2) The structural complexity is greatly reduced and the weight is reduced;

[0032] 3) It can be co-cured with composite wings.

[0033] The following is combined with Figure 1 , Attachment Figure 2 A flexible multi-layer conformal ice detection device of the present invention is further described in detail.

[0034] The implementation process of the present invention is as follows:

[0035] The flexible multi-layer conformal ice detection device, wherein the insulating layer 2 is located between the heating layer 1 and the heating layer 3, has good electrical insulation performance and good thermal conductivity;

[0036] The first series of temperature sensors 4 are used to collect temperature distribution information within the spatial range of the heating layer 1, and the second series of temperature sensors 5 are used to collect temperature distribution information within the spatial range of the heating layer 2, and together with the first series of temperature sensors 4, they constitute the temperature distribution information of the ice detector in the depth direction;

[0037] The ice detection device is installed on the leading edge surface of the aircraft wing, and can determine whether the aircraft is iced by collecting spatial temperature distribution data;

[0038] The heating layer 3 has a higher power density than the heating layer 1 and is located above the heating layer 1;

[0039] The series of temperature sensors are controlled by a controller;

[0040] The controller has a processor and a non-volatile memory, the processor and the non-volatile memory are in information communication with each other, the memory stores instruction codes for the processor to execute, these codes are used to determine whether the aircraft is in an icing environment in combination with the temperature distribution and control the heating layer to start heating;

[0041] The controller receives a series of temperature sensor temperature signals, and according to the spatial temperature distribution, determines the icing environment of the aircraft, and selectively turns on the heating layer for heating. The controller determines the icing environment of the aircraft according to the change of the heat flux density of the icing detector.

[0042] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A conformal ice detection device based on a flexible multi-layer structure, characterized in that: It includes a controller and a flexible multi-layer structure; the flexible multi-layer structure is a multi-layer structure in which an insulating layer, a first heating layer, an insulating layer, a second heating layer and an insulating layer are stacked; A first temperature sensor is embedded in the first heating layer, and a second temperature sensor is embedded in the second heating layer; The first temperature sensor, the second temperature sensor, the first heating layer and the second heating layer are all controlled by the controller; The flexible multilayer structure is arranged on the leading edge surface of the wing, the first temperature sensor is used to collect the temperature of the first heating layer, and the second temperature sensor is used to collect the temperature of the second heating layer; Relative to the leading edge surface, the first heating layer is outside the second heating layer; the controller determines whether ice is formed according to the collected data of the first temperature sensor and the second temperature sensor.

2. The conformal ice detection device based on a flexible multi-layer structure according to claim 1, characterized in that: The power density of the first heating layer is higher than the power density of the second heating layer.

3. The conformal ice detection device based on a flexible multi-layer structure according to claim 1, characterized in that: The controller has a processor and a non-volatile memory, which can communicate information with each other. The memory stores reference data for determining whether the leading edge of the wing is in an icing environment and controlling the heating layer to start heating.

4. The conformal ice detection device based on a flexible multi-layer structure according to claim 1, characterized in that: There are plural first and second temperature sensors.

Images