Accession Number : ADA544946


Title :   Operational Characteristics of a Rotating Detonation Engine Using Hydrogen and Air


Descriptive Note : Master's thesis


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF AERONAUTICS AND ASTRONAUTICS


Personal Author(s) : Russo, Rachel M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a544946.pdf


Report Date : Jun 2011


Pagination or Media Count : 105


Abstract : Rotating detonation engines (RDE) are pressure gain combustion engines that have the potential for greater efficiency than traditional, constant pressure, deflagration engines. RDEs are smaller and mechanically simpler than pulsed detonation engines. A small diameter (3 in) engine was successfully run on hydrogen and air. Most of the tests were conducted using air with a slightly lower diluents percentage (77% nitrogen as opposed to 79% nitrogen). These tests provided the foundation for determining the operational space (mass flow rate and equivalence ratio) of the rotating detonation engine. From the tests conducted with the lower diluents air, the appropriate run conditions for regular air were determined. For standard air (79% nitrogen) it was found that a larger equivalence ratio (about 1.5) was required to obtain continuous detonations.


Descriptors :   *ENGINES , *HYDROGEN , *ROTATION , THESES , COMBUSTION , MASS FLOW , FLOW RATE , PULSES , GAIN , PRESSURE , DETONATIONS , DEFLAGRATION , AIR , DILUENTS , DIAMETERS , RATIOS


Subject Categories : Reciprocating and Rotating Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE