액체로켓엔진 동특성 파악을 위한 압력 펄스발생기의 설계 및 성능 평가

In this paper, the design and performance evaluation of a pressure pulsator, which is used for the experimental acquirement of the transfer function of a liquid rocket engine or the components of a propellant feed system, has been summarized. A cam-type pulsator, which can generate sinusoidal pressure pulses up to 160Hz, is fabricated. A BLDC motor of 250 watt is used to actuate the pulsator. Sinusoidal pressure pulses are generated from 10Hz to 130Hz in 10Hz steps. As a result, high quality sinusoidal pressure pulses are acquired up to 100Hz.