Force measuring system for spray pipe

A technology of force measurement and nozzle, applied in the field of force measurement system, can solve problems such as unreliable connection and poor measurement accuracy, and achieve the effect of improving measurement accuracy, reducing distance, and coordinating design load

Active Publication Date: 2018-08-24
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a force measuring system for the nozzle to solve the problem of unreliable connection between the air bridge, the balance and the ventilation strut when measuring the reverse thrust and moment of the nozzle, and the problems of poor measurement accuracy

Method used

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  • Force measuring system for spray pipe
  • Force measuring system for spray pipe
  • Force measuring system for spray pipe

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The invention provides a force measuring system for nozzles, such as figure 1 and 2 As shown, it includes transition section 2, sealing head 3, front air bridge 5, housing 6, balance 7, ventilation strut 8, rear air bridge 9 and positioning ring 10;

[0051]The intake end of the ventilation strut 8 is connected to the support device 13 through the positioning ring 10 and the nut 11, and the outlet end of the ventilation strut 8 is detachably connected with the front air bridge 5, and the front air bridge 5 and the ventilation strut 8 have The balance installation taper hole, the two ends of the balance 7 are respectively located in the balance installation taper hole of the front air bridge 5 and the ventilation strut 8, the front air bridge 5 is connected with the sealing head 3, and the balance 7 is sealed to the sealing hea...

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PUM

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Abstract

The invention provides a force measuring system for a spray pipe. A front air bridge (5) is detachably connected with the air outlet end of a ventilating supporting rod (8), and balance mounting taperholes are formed in the front air bridge (5) and the ventilating supporting rod (8); the two ends of a balance (7) are correspondingly positioned in the balance mounting taper holes of the front airbridge (5) and the ventilating supporting rod (8), and the front air bridge (5) is connected with a seal head (3); the balance (7) is sealed in a sealed space formed by the seal head (3), the front air bridge (5) and the ventilating supporting rod (8), and a shell (6) is positioned outside the air outlet ends of the front air bridge (5) and the ventilating supporting rod (8); and the front air bridge (5) is detachably connected with one end of the shell (6), and the ventilating supporting rod (8) is connected with the other end of the shell (6) through a rear air bridge (9). The measuring accuracy of the force measuring system increases from 2% to 0.8%.

Description

technical field [0001] The invention relates to the field of aviation force measurement, in particular to a force measurement system. Background technique [0002] In the previous single nozzle force measurement system, an air bridge and a balance were often used, and the balance and the air bridge were connected in series or in parallel. Among them, the series method makes the outlet of the nozzle far away from the center of the balance, so that the balance bears a large pitch and yaw moment, resulting in a serious mismatch between the force and moment load when the balance is designed, which affects the improvement of the overall performance of the balance. This method requires a large axial space. The parallel connection means that the axis of the balance and the air bridge are axially coincident (the balance passes through the inside of the air bridge) or parallel (the air bridge is arranged in parallel). This connection can reduce the distance between the outlet of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/96F02K9/97
CPCF02K9/96F02K9/97
Inventor 苗磊李耀华李建强张威权何成军马涛潘华烨
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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