Evaluation of a liquid-fueled pulse detonation engine combustor

Download
Author
Forster, David L.
Date
1998-12Advisor
Brophy, Christopher M.
Netzer, David W.
Second Reader
NA
Metadata
Show full item recordAbstract
An evaluation of five liquid-fueled pulse detonation engine combustor geometries and flow field conditions was performed over a wide range of equivalence ratios. Particle sizing and spray characterization of commercially available atomizers was conducted to determine the optimum conditions that produced acceptable mass flow and particle size distribution for use in the combustor. The chosen atomizer was installed in the combustor geometries and then analyzed over a range of combustor conditions to measure deflagration to detonation transition (DDT) distances and detonation wave velocities for each condition. Testing was conducted for ambient (100-110 deg F) and higher wall temperatures (>300 deg F) at an operating frequency of 5Hz. It was found that the shortest DDT for JP10 and O2 was achieved using a stepped front-end insert under hot conditions and with a loaded equivalence ratio greater than .75, but less than 1.15.
Collections
Related items
Showing items related by title, author, creator and subject.
-
Performance characterization of a valveless pulse detonation engine
Brophy, C.M.; Werner, S.; Sinibaldi, J.O. (AIAA, 2003-01);A valveless pulse detonation engine geometry has been partially evaluated on a direct-connect test stand at simulated inlet flight conditions to the combustor. The geometry utilizes a enriched air initiator to initiate ... -
Transient heat transfer properties in a pulse detonation combustor
Fontenot, Dion G. (Monterey, California. Naval Postgraduate School, 2011-03);The heat transfer along the axis of a pulse detonation combustor has been characterized for various frequencies and fill fractions at 2.5 atmospheres of pressure for chamber refresh conditions. In a pulse detonation ... -
Propagation of a Two-Phase Detonation Across a Geometric Difraction with Compositional Discontinuity
Hofstedt, Todd A. (Monterey, California. Naval Postgraduate School, 2000-06);The research program involved the modification and use of an existing pulse detonation engine (PDE) to investigate the detonability of a JP-10/air aerosol. The detonation of a JP-10 aerosol in air proved more difficult ...