Experimental study of particles trajectory in firing solid rocket motor with RTR technique part: (I) analysis of feasibility and experimental results

In order to understand the flow pattern in a firing SRM deeply, authors try to explore a new way to investigate its working process by using RTR (X-ray Real-Time Radiography) along with an advanced digital image processor and high speed motion analyzer. In this paper the authors first give a summary about the research situation and development tendency of two-phase flow in SRMs, and then introduce the test fundamental of RTR technique. The authors also inquire into the feasibility on applying RTR technique to study the particle trajectory in a firing SRM combustor and conclude that: (1) With some other auxiliary means, RTR technique can be used to measure the particles trajectory in a two dimensional firing conbustion chamber. (2) Adequate image processing methods and selection of particle material are the key links to successful results. Image processing will be described in part I. The study on this subject will set up a new field in two-phase flow research.