Patent ID: 8881500

Claim:
A detonation chamber for a pulse detonation combustor comprising: a plurality of duplex tab obstacles disposed on at least a portion of an inner surface of the detonation chamber, wherein each of the plurality of duplex tab obstacles are comprised of at least a pair of tabs wherein each tab of said pair of tabs are triangular and define an inclined delta wing protruding from the inner surface of the detonation chamber so as to provide for a free flow of fluid around a triangular perimeter and between an underneath surface of each of the tabs and the inner surface of the detonation chamber, each of the pair of tabs having a common center slot circumferentially between adjacent pairs of tabs and defining a plurality of circumferential and axially spaced apart duplex tab obstacles, wherein the plurality of duplex tab obstacles have compound radial and circumferential inclination therein from the tab root to the tab apex and between forward and aft edges and wherein one of the forward and aft edges meet the inner surface of the detonation chamber at an angle of less than 90 degrees, said common center slot being triangular and extending outwardly from a common junction of said tab roots and diverging circumferentially therebetween, wherein the plurality of duplex tab obstacles enhance a turbulence of a fluid flow and flame acceleration through the detonation chamber.