A Summary/Overview of Ejector Augmentor Theory and Performance. Volume 1. Technical Discussion

Computational Study of Near-Limit Propagation of Detonation in Hydrogen-Air Mixtures

“…12. A finer grid, having a minimum spacing of t.x'nin=7.324xlO- 5 cm, was used in this case, due to the shorter ignition delay times at this pressure near stoichiometric conditions. The theoretical Chapman-louguet detonation speed for a stoichiometric hydrogen-air mixture at Po = 1.0 bar and To = 298 K is 1976.7 mls.…”

“…Nevertheless, a potential application of a fuel-rich pulsed detonation rocket engine (PDRE) has been proposed in combination with an ejector. In such a PDRE-ejector engine, the excess fuel in the PDRE tube is mixed and burned with entrained air and subsequently expanded through a nozzle in an unsteady version of the ejector-ramjet concept 4 Unsteady ejectors are potentially more efficient than their steady-state counterparts 5 There is tllerefore considerable practical interest in investigating tlle limits of detonability for bOtll rich and lean mixtures. Published work on detonability limits is not extensive.…”

PIV and CTA Measurement of Constant Area Mixing in Subsonic Air Ejector

“…In a review carried out by Bonnington and King [2], 413 references dating prior 1976 were cited. Porter and Squyers [3] compiled a list of more than 1600 references relating to ejector theory and performances.…”

PIV measurement of constant area mixing in subsonic air ejector

“…In a review carried out by Bonnington and King [2], 413 references dating prior 1976 were cited. Porter and Squyers [3] compiled a list of more than 1600 references relating to ejector theory and performances. First methods of ejector design were based on experience.…”