title: Pulsed thrust measurements using electromagnetic calibration techniques.
abstract: A thrust stand for accurately measuring impulse bits, which ranged from 10-1000 μN s using a noncontact electromagnetic calibration technique is described. In particular, a permanent magnet structure was designed to produce a uniform magnetic field, and a multiturn coil was made to produce a calibration force less than 10 mN. The electromagnetic calibration force for pulsed thrust measurements was linear to the coil current and changed less than 2.5% when the distance between the coil and magnet changed 6 mm. A pulsed plasma thruster was first tested on the thrust stand, and afterward five single impulse bits were measured to give a 310 μN s average impulse bit. Uncertainty of the measured impulse bit was analyzed to evaluate the quality of the measurement and was found to be 10 μN s with 95% credibility.
authors: School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China.
authors: Haibin
authors: H
authors: Tang
authors: Chenbo
authors: C
authors: Shi
authors: Xin'ai
authors: X
authors: Zhang
authors: Zun
authors: Z
authors: Zhang
authors: Jiao
authors: J
authors: Cheng