Continuous Spin Detonations

Continuous detonation wave engine studies for space application

“…In this case, the duct expansion is not necessary to obtain a supersonic §ow at the combustion chamber exit. The observed §ow structure is qualitatively similar to that described in [2,3].…”

“…The azimuthal direction of detonation propagation is de¦ned at the initiation and does not change if the detonation is stable. For a stable detonation propagation, the thickness of the fresh mixture layer h must be about 10 20 mm and the spatial period l between the fronts is typically (7 ± 2)h depending on the injection conditions [3]. Under these conditions, the detonation is close to the Chapman Jouguet mode; so, the detonation frequency, f D , (inverse time period between successive fronts) is of the order of 10 kHz.…”

“…Based on existing experience [3] and recent studies [4] related to the CDWRE startup and operation in a low-pressure environment, wall cooling, and structural materials, a demonstration engine has been designed by MBDA France. The layout of the CDWRE demonstrator is shown in Fig.…”

“…The choice of P tj provides that g j corresponds to the experimental conditions [3] at P tj = 1 MPa, whereas g j is within the range of CDWRE operating conditions [8] at P tj = 3 6 MPa. From the simulation results, one ¦nds that P tj can be considered as a scaling factor for g j , P w , P w min , and P w max .…”

“…The concept of CDWRE was proposed in the early 1960s by Russian scientist Voitsekhovskii [1] and experimentally proven for the ¦rst time at the Lavrentyev Institute of Hydrodynamics (LIH) of the Siberian Branch of the Russian Academy of Sciences. A detailed review of experimental investigations of this concept and its comparison with the conventional rocket engine can be found in recent publications [2,3].…”