JPH058299U - Guided flight - Google Patents

Abstract

(57) [Abstract] [Purpose] The configuration is easy and the operation is reliable, and while the target is not detected by the infrared sensor during the flight of the guided projectile, the temperature rise of the infrared dome due to aerodynamic heating is prevented to detect the target. An infrared dome protection device for a guided vehicle that can be detected by an infrared sensor is obtained. [Structure] A substance that sublimates from a solid to a gas at a certain temperature or more, for example, oxalic acid, is sublimated for a certain period of time, and then a protective cover 8 that is all gas is provided outside the infrared dome 3 to fly the guide projectile. If the temperature rise V exceeds a certain temperature due to aerodynamic heating while the target is not detected by the infrared sensor 2, the protective cover 8 itself sublimates from solid to gas.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a protection device that prevents the temperature of the infrared dome from rising due to aerodynamic heating while the target is not detected by the infrared sensor while the guided vehicle is flying, and that the target can be detected by the infrared sensor when the target is detected. is there.

[0002]

[Prior Art]

 FIG. 2 is a cross-sectional view of an infrared dome protector for a guided vehicle that has been used conventionally. In the figure, reference numeral 1 is a guide vehicle guiding device section, 2 is an infrared sensor for detecting a target by infrared rays emitted from a target, 3 is infrared dome 4a and 4b provided outside the infrared sensor, and infrared dome 4a and 4b of the infrared dome 3 are provided. Infrared protective cover provided outside, 5 is an ignition device, 6 is explosive which can explode by the ignition device 5 and separate the protective covers 4a and 4b, and 7 is a cable for sending a signal to the ignition device. .

Next, the operation will be described. While the infrared sensor 2 does not detect the target, the protective covers 4a and 4b provided on the outside of the infrared dome 3 raise the temperature of the infrared dome 3 due to aerodynamic heating during flight, and emit a larger amount of infrared rays than the infrared rays emitted by the target. To prevent When a target is detected by the infrared sensor 2, a signal is sent from the cable 7 to the ignition device 6, the explosive powder 7 explodes, and the protective covers 4a and 4b are separated. After the protective covers 4a and 4b are divided, the infrared sensor 2 can detect the target through the infrared dome 3 by the infrared rays emitted from the target.

[0004]

[Problems to be solved by the device]

 Since the conventional guided vehicle is constructed as described above, a signal must be sent to the ignition device 5 by the cable 7 when the target is detected by the infrared sensor 2, and the protective cover 4 is divided by the explosion of the explosive. However, there was a problem that the configuration was complicated and the operation was not reliable.

The present invention has been made to solve the above-mentioned problems, and the configuration is easy and the operation is reliable, and while the target detection by the infrared sensor is not performed during the flight of the guided projectile. The purpose is to prevent the temperature rise of the infrared dome due to aerodynamic heating, and to obtain a guided flying object that can be detected by an infrared sensor when detecting a target.

[0006]

[Means for Solving the Problems]

 The guided air vehicle according to the present invention comprises a substance that sublimates from a solid to a gas at a certain temperature or more and is provided with a protective cover on the outside of the infrared dome that becomes a gas after sublimation for a certain period of time.

[0007]

[Action]

 The infrared dome protection device for a guided vehicle in this invention prevents the temperature of the infrared dome from rising due to aerodynamic heating because the protective cover itself sublimates from solid to gas while the target is not detected by the infrared sensor. After all sublimation, the target can be detected by the infrared sensor.

[0008]

【Example】

 Example 1. FIG. 1 is a sectional view of an embodiment of an infrared dome protection device for a guided vehicle according to the present invention. In FIG. 1, 1 to 3 are the same as those in the conventional embodiment, 8 is a substance which is provided outside the infrared dome 3 and sublimes from a solid to a gas at a certain temperature or higher, for example, oxalic acid (sublimation point, 430K ) And is a protective cover that becomes a gas after sublimation for a certain period of time.

In the infrared dome protection device for a guided flight constructed as described above, during the flight of the guided flight, while the target is not detected by the infrared sensor 2, the protective cover 8 is aerodynamically heated to a constant temperature V constant temperature. With the above, the protective cover 8 itself sublimes from solid to gas.

The temperature of the infrared dome 3 is prevented from rising during a certain period of time during which the protective cover 8 is sublimated, that is, while the infrared sensor 2 does not detect a target. After all the protective cover 8 is sublimated and turned into gas, the infrared sensor 2 can detect the target.

[0011]

[Effect of the device]

 As described above, according to the present invention, the protective cover, which is made of a substance that sublimates from solid to gas in a certain time or more and is sublimated for a certain time, is provided outside the infrared dome. It has the effect that it can be easily configured and its operation is reliable.

[Brief description of drawings]

FIG. 1 is a sectional view of an infrared dome protector for a guided vehicle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional infrared dome protection device for a guided air vehicle.

[Explanation of symbols]

 1 Guidance projectile guidance device 2 Infrared sensor 3 Infrared dome 4 Protective cover 5 Ignition device 6 Explosive 7 Cable 8 Protective cover

Claims (1)

[Claims for utility model registration] 1. A guide flying vehicle comprising an infrared sensor for detecting a target by infrared rays emitted from the target, and an infrared dome which transmits infrared rays and is provided outside the infrared sensor, An induction projectile provided on the outside of an infrared dome, which is made of a substance that sublimates from a solid to a gas at a certain temperature or higher, and which has a protective cover that becomes a gas after sublimating for a certain period of time.