An introduction to pulse detonation engines

Airbreathing rotating detonation wave engine cycle analysis

“…2 depicts the unwrapped flow in the combustor annulus. Two geometric properties that are held constant while the analysis is conducted are the diameter of the annulus d and the combustor channel radial width 3 . Values of the isolator channel radial width 2 and h m are initialized for the iterative solution.…”

“…The effect of the centrifugal force was considered [26], but a preliminary investigation with the combustor flow conditions and geometry showed that it makes a negligible impact on performance. Consequently, 3 /d was fixed at 0.1 which ensures stability according to the empirical estimates. Increasing 3 can lead to a higher power density for an engine of diameter d, but varying it in this study has no impact on performance indicators like specific impulse which are independent of area.…”

Effect of surface impulsive thermal loads on fatigue behavior of constant volume propulsion engine combustor materials

“…However, the development of these engines requires robust design of the engine components that are capable of enduring harsh detonation environments. In particular, the detonation combustor chamber, which is designed to sustain and confine the detonation combustion process, will experience high pressure and temperature pulses with a very short duration [2,3]. Therefore, it is of great importance to evaluate engine combustor materials and components under simulated engine temperature and stress conditions in the laboratory.…”

Injection and mixing of gas propellants for pulse detonation propulsion

“…Researchers like Bussing and his team at ASI started with shock-tube experiments for the development of PDEs 1 , and later reported a practical implementation of multi-cycle detonation chambers 2 . Wilson and researchers at UTA have developed single and multi-cycle detonation combustion with various fueloxidizer mixtures 3 ' 5 .…”