Multitube valveless pulse detonation engine

A valveless multitube pulse detonation engine comprising:

• a plurality of detonation tubes radially centered around a single air inlet having a center longitudinal axis, the single air inlet connected at a downstream end to an inlet manifold where fuel is mixed with air from the single air inlet forming an air and fuel mixture;
• each detonation tube comprising a combustion chamber inlet end and an independent discharge outlet end opposite the combustion chamber inlet end;
• the inlet manifold having a plurality of manifold outlets downstream of the single air inlet, each of the plurality of detonation tubes connected at the combustion chamber inlet end to one manifold outlet of the plurality of manifold outlets;
• wherein each of the plurality of manifold outlets are radially equidistant from the center longitudinal axis of the single air inlet;
• wherein each detonation tube further comprises at least one fuel injector in fluid communication with the detonation tube to provide fuel thereto;
• wherein the air and fuel mixture is detonated in each of the plurality of detonation tubes simultaneously, the simultaneous detonation producing multiple reverse shock waves;
• and
• wherein each of the plurality of manifold outlets are radially aligned around the center longitudinal axis of the single air inlet so as to minimize back-pressure by directing the multiple reverse shock waves into one another inside the inlet manifold and effectively using the shock wave pressures as reacting surfaces for one another and effectively reducing the effect of back flowing shock waves upstream of the inlet manifold into the single air inlet.