| dc.description.abstract | Sounding Rocket X (SR-X), funded by National Space Organization (NSPO) has been successfully launched by National Chung-Shan Institute of Science and Technology (NCSIST) on October 17, 2014. According to data of a three-axes fluxgate magnetometer on board SR-V and SR-VII, the rocket’s attitude is not consistent with the simulation results. Since SR-VIII, an aspectmeter (MEMS analog accelerometers, magnetometers, and gyroscopes) designed and fabricated by NCU is installed on the rockets to provide reliable attitude information for science data calibrations. However, the analog gyroscope of the aspectmeter cannot show correct angular rates under a vibrating condition compared to the fiber optic gyroscope data from the SR-IX. Meanwhile, for stability the SR-X intends to raise the spin rate to 1,620°/s instead of 1,500°/s for the others. A Yo-Yo de-spin is required by scientific team to reduce the spin rate down to 360°/s after the nose cone separation. Under the all new requirements, we re-design a new full digital aspectmeter to incorporate all new digital 3-axis sensors for the SR-X. In this thesis, flight test results of the aspectmeter are used to reconstruct the SR-X’s attitude, and compared with the data of the SR-VIII and the SR-IX. The data indicate that the digital aspectmeter can satisfy the requirements of high--low rotation rates, resistance from the vibration, and monitoring of attitude variation during the Yo-Yo de-spin. | en_US |