T/BEA 40006-2024 Active Group standards

T/BEA 40006-2024 Electric propulsion thrust measurement method

Publish Date: 2024-08-11 Implement Date: 2024-08-18 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/BEA 40006-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Integrated Metrology and Measurement

Publish Date: 2024-08-11

Implement Date: 2024-08-18

Scope

Scope: This method is applicable to the measurement of electric propulsion thrust using available three-wire torsion pendulum thrust measurement devices with a thrust range of (0.5~1000) mN. Main technical content: Terminology definitions. The following terms and definitions apply to this specification. 3.1 Three-wire torsion pendulum thrust measurement device The three-wire torsion pendulum thrust measurement device is mainly composed of three torsion wires suspended on a horizontal beam, a counterweight, a displacement sensor, and a damper. It is typically used to measure average thrust or steady-state thrust. 4. Overview 4.1 Principle The three-wire torsion pendulum thrust measurement device uses the principle of three-wire torsion pendulum and optical lever amplification to measure thrust. When calibrating in a vacuum environment, the force applied by the weight calibration device to the torsion platform is horizontal. By recording the deflection displacement of the torsion platform, a linear relationship between thrust and displacement is obtained, enabling the calibration of the thrust measurement system. When testing in a vacuum environment, the force applied by the thruster to the torsion platform is horizontal. By obtaining the displacement and combining it with the linear relationship between thrust and displacement, the thrust of the thruster can be measured. The principle diagram is shown in Figure 1. Figure 1 Principle diagram of the three-wire torsion pendulum thrust measurement device In Figure 1, - θ is the deflection angle of the torsion pendulum; - S is the displacement of the light spot; - F is the thrust generated by the thruster; - L is the length of the torsion wire; - a is the lever arm of the thrust relative to the center of the torsion pendulum; - G is the total mass of the torsion pendulum, thruster, and counterweight; - R is the distance from the torsion wire to the center of the torsion pendulum. According t