Accession Number : ADA577724


Title :   Design and Testing of an H2/O2 Predetonator for a Simulated Rotating Detonation Engine Channel


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT


Personal Author(s) : Miller, Stephen J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a577724.pdf


Report Date : Mar 2013


Pagination or Media Count : 106


Abstract : A study is presented on the relationship between a pre-detonator and a detonation channel of an RDE. Testing was conducted on a straight narrow channel made of clear polycarbonate windows connected to an H2/O2 pre-detonator to simulate the RDE initiation scheme and allow for flow visualization. A comparison is made on decoupling distance and wave velocities for a range of pre-detonator designs, inclination angles, equivalence ratios and geometries placed within the simulated channel. Regardless of inclination angle or equivalence ratio the detonation wave decoupled within 25 mm from the pre-detonator exit into the channel. A step change in diameter 25 mm from the exit of the pre-detonator increased the coupled distance to approximately 40 mm from the pre-detonator exit. A step diameter change also increased the exit velocity of the wave and directionalized the flow. Wedges of 30 , 45 and 60 , placed in the channel next to the pre-detonator exit, increased the distance the shock and flame remained coupled from the pre-detonator exit to 42 mm, 50 mm and 60 mm, respectively.


Descriptors :   *DETONATION WAVES , *DETONATIONS , *ENGINES , DECOUPLING , FLAMES , FLOW , FLOW VISUALIZATION , POLYCARBONATES , RATIOS , SIMULATION , THESES


Subject Categories : Explosions


Distribution Statement : APPROVED FOR PUBLIC RELEASE