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Heating device of icing-wind-tunnel pneumatic balance of helicopter rotor wing

A heating device, rotor ice technology, applied in the direction of electric heating devices, measuring devices, ohmic resistance heating, etc., can solve the problem of inability to have large temperature changes, extremely uneven temperature field, and uneven aerodynamic measurement of helicopter rotor ice wind tunnel aerodynamic balance Accuracy and other issues to achieve the effect of improving accuracy and uniform internal temperature

Active Publication Date: 2015-09-30
CHINA HELICOPTER RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the ice wind tunnel test, the internal temperature field of the conventional helicopter rotor ice wind tunnel aerodynamic balance is extremely uneven, while the measurement of the aerodynamic force of the helicopter rotor ice wind tunnel aerodynamic balance is through the strain bridges arranged at both ends inside the balance The strain bridge requires that the working temperature must be stable and there should be no large temperature changes, otherwise the signal it picks up cannot reflect the real force of the balance. This is exactly the aerodynamic measurement of the aerodynamic balance of the conventional helicopter rotor ice wind tunnel. inaccurate problem

Method used

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  • Heating device of icing-wind-tunnel pneumatic balance of helicopter rotor wing
  • Heating device of icing-wind-tunnel pneumatic balance of helicopter rotor wing
  • Heating device of icing-wind-tunnel pneumatic balance of helicopter rotor wing

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 Shown, a kind of helicopter rotor ice wind tunnel aerodynamic balance heating device: comprise heating mantle 2 and thermocouple 3, heating mantle 2 is made of resistance wire and is rolled into cylindrical shape and is enclosed within the inside of balance cylinder overcoat 5 by pasting mode , the upper part of the balance cylinder jacket 5 is covered with a balance end plate 4, and the bottom is covered with a balance rear plate 6. The balance end plate 4 includes a terminal head 1 for the introduction of power supply and the transmission of signals, wherein the terminal head includes a The lead terminal head 1-1 and the two lead wire terminal heads are respectively the upper lead wire terminal head 1-1 and the lower lead wire terminal head 1-2;

[0018] The heating jacket 2 contains a thermocouple 3. The thermocouple 3 senses the internal temperature of the balance and transmits the signal to the external temperature control switch through the lead t...

Embodiment 2

[0023] A helicopter rotor ice wind tunnel aerodynamic balance heating device, comprising a heating jacket 2 and a thermocouple 3, the heating jacket 2 is made of resistance wire and rolled into a cylindrical shape, and is placed inside the balance cylinder jacket 5 by pasting, the balance is round The upper part of the barrel jacket 5 is covered with a balance end plate 4, and the bottom is covered with a balance rear plate 6. The balance end plate 4 includes a terminal head 1 for the introduction of power supply and the transmission of signals, wherein the terminal head includes a lead terminal A head 1-1 and two lead terminal heads are respectively an upper lead terminal head 1-1 and a lower lead terminal head 1-2;

[0024] The heating jacket 2 contains a thermocouple 3. The thermocouple 3 senses the internal temperature of the balance and transmits the signal to the external temperature control switch through the lead terminal head. The temperature control switch controls th...

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Abstract

The invention provides a heating device of an icing-wind-tunnel pneumatic balance of a helicopter rotor wing. The heating device comprises a resistance wire heating sleeve, a heating electrical terminal, thermocouples and a temperature control switch, the resistance wire heating sleeve includes resistance wire heating pads which are uniformly arranged at the inner wall of a cylinder, the heating electrical terminal is connected with an external 220V AC power supply, the thermocouples are used for measure the temperature and controlled by the temperature control switch, and the temperature control switch is a temperature over-limit switch. Thus, the internal temperature of the heating device is kept uniform, and the aerodynamic force of the pneumatic balance can be accurately measured.

Description

technical field [0001] The invention belongs to the field of helicopter rotor ice wind tunnel test, and in particular relates to a heating device. Background technique [0002] The helicopter rotor ice wind tunnel aerodynamic balance is an important technology for the aerodynamic measurement of the helicopter rotor ice wind tunnel test, and the helicopter rotor ice wind tunnel aerodynamic balance heating device is the premise to ensure the accurate measurement data of the helicopter rotor ice wind tunnel aerodynamic balance. The device heats the inside of the aerodynamic balance of the helicopter rotor ice wind tunnel to keep the internal temperature field within a relatively stable range, thereby effectively improving the measurement accuracy of the helicopter rotor ice wind tunnel aerodynamic balance. [0003] The conventional helicopter rotor ice wind tunnel aerodynamic balance has no heating device. When carrying out the ice wind tunnel test, because one end of the balan...

Claims

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Application Information

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IPC IPC(8): H05B3/00G01M9/06
Inventor 刘正江陈焕邓建军
Owner CHINA HELICOPTER RES & DEV INST
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