1 edition of Preliminary assessment of a rotary detonation engine concept found in the catalog.
Preliminary assessment of a rotary detonation engine concept
Stephen A. Monks
A new configuration of a rotary engine – the Szorenyi rotary engine – has been developed by the Melbourne-based Rotary Engine Development Agency (REDA). While the stator, or stationary part of the Szorenyi engine is similar to that of a Wankel engine, the geometric shape of the engine rotor is a rhombus, which deforms as it rotates inside the contour of the stator. (Photo: U.S. Navy/Mass Communication Specialist 1st Class Tommy Lamkin) The Rotating Detonation Engine (RDE) is an even more attractive and different strategy for using the detonation cycle to obtain better fuel efficiency. NRL researchers have constructed a model for simulating RDEs using earlier work done on general detonations, as a foundation.
After all, an engine is an engine, capable of immense power (and who knows when such innovations will trickle down to the civilian sector). So with that in mind, let's look at the rotating detonation engine -- a type of gas-turbine that's designed for efficiency, with its carefully constructed, consistent cycle of injections and : Cherise Threewitt. A brief overview of the fundamentals behind this engine concept is presented first, followed by the progress made up to a flight test of an aircraft using this engine. There is the potential to increase further the substantial performance gains made by the pulsed detonation engine (PDE) concept by moving from “pulsed” or “intermittent Author: Kazhikathra Kailasanath.
Rotating Detonation Rocket Engines • Pressure Gain Combustion – Detonative combustion may provide pressure increase, resulting in higher efficiency or similar efficiency at lower pressures – % increase in theoretical efficiency or up to 5x reduction in initial combustion pressure • Rotating Detonation Rocket Engines (RDRE). Pulse Detonation Engine Research – Early History Detonation wave research started at UTA in in a program funded by the University of Texas System’s Advanced Technology Program. In this program, UTA performed an experimental investigation of fundamental detonation physics, followed by the development of a series of small-scale Size: 3MB.
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N StCUWTYCLASSiriCATIOMOfTHISPACE(Wt^nDmtmZnffd) REPORTDOCUMENTATIONPAGE READINSTRUCTIONS BEFORECOMPLETINGFORM NUM^^n CESSIONNO Preliminary Assessment of a Rotary Detonation Engine Concept by Stephen A.
Monks Captain, United States Army B.S., United States Military Academy, Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN AERONAUTICAL ENGINEERING from the NAVAL POSTGRADUATE SCHOOL September Author Approvied by: C ouCited by: 2.
Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations Daniel E. Paxson* NASA Glenn Research Center, Cleveland, Ohio, A rotating detonation engine (RDE) configuration whereby the working fluid enters and exits in a predominantly radial manner is examined using a quasi-two-dimensional.
A preliminary performance assessment is presented for the wave ejector configuration, considering the effect of key geometric parameters, which are selected for high specific impulse. It is shown that the rotary wave ejector concept has significant potential for thrust augmentation relative to a basic pulse detonation by: 5.
FIG. 1 is a schematic elevation view of an embodiment of a rotary detonation engine according to the present invention; FIG. 2 is a cross-sectional view of the embodiment of FIG. 1 taken along lines in FIG. 1; FIG. 3 is a cross-sectional view of the embodiment of FIG.
1 taken along lines in FIG. 1;Cited by: Preliminary experimental investigations were carried out to test their feasibility for supply of the single-tube pulse detonation rocket engine.
Based on the gear-driven rotary. The rotary wave ejector device integrates a pulse detonation process with an efficient momentum transfer process in specially shaped channels of a single wave-rotor component.
Rotating detonation engines (RDE’s) represent a novel approach to using the higher eﬃciency detonation thermal cycle without some of the drawbacks of pulsed detonation engines (PDE’s). Similar to the PDE, the RDE has the advantage of being operated under a File Size: KB.
The simulation results indicate that the rotary-vee engine concept is thermodynamically feasible, but has no clear advantage over a generic, state-of-the-art two-stroke engine. By comparison, the rotary-vee appears to offer a tradeoff, with a possibly higher power density but a lower Size: 1MB.
Concept. The basic concept of an RDE is a detonation wave that travels around a circular channel (annulus). Fuel and oxidizer are injected into the channel, normally through small holes or slits.
A detonation is initiated in the fuel/oxidizer mixture by some form of igniter. After the engine is started, the detonations are self-sustaining. All previous research on turbine integration with detonation combustors has focused on utilizing PDEs to drive axial and centrifugal turbines.
The objective of this thesis was the integration and testing of an axial turbine driven by a rotary detonation engine (RDE) to determine turbine by: detonation engines, themselves the subject of great interest.
However, due to the novelty of the concept, substantial work remains to demonstrate feasibility and bring the RDE to reality. An assessment of the challenges, ranging from understandingbasic physics through utilizing rotating detonations in aerospace platforms, is provided.
IntroductionFile Size: KB. engine based on the detonation cycle provides a cycle efficiency of about 30% (compared to 0% for the Bray-ton cycle).1 This means that much simpler compres-sors can be used to generate the equivalent efficiency. Adding a compressor to a detonation engine increases the efficiency further, and so technology developed forFile Size: KB.
Detonation Cycleanalysis Propulsion system A cycle analysis model for an airbreathing, rotating detonation wave engine (RDE) is presented. The engine consists of a steady inlet system with an isolator which delivers air into an annular combustor. A detonation wave continuously rotates around the combustor with side relief as the ﬂow expands.
A reciprocating internal combustion engine used a crankshaft to develop rotating motion. A rotary pulse detonation engine can be adapted to rotate a shaft. A combustor portion of the rotary pulse detonation engine is spaced from an axis of the shaft a preestablished distance therebetween in a mass member.
An intake portion and an exhaust portion of the combustor portion is positioned in a Cited by: 7. Pulse Detonation Engine (PDE): Wide operating conditions (flight Mach number = 0~5). Repetitive and intermittent thrust = complicated system for fast purging and refilling. Rotating Detonation Engine (RDE): Simple configuration and higher thrust due to continuous injection.
Wide operating conditions without limitation of injection velocity Cited by: Numerical Analysis of a Rotating Detonation Engine in the Relative Reference Frame.
Daniel E. Paxson; Preliminary Computational Assessment of Disk Rotating Detonation Engine Configurations. Low-Order Parametric Analysis of a Rotating Detonation Engine in Rocket Mode. Published on This is a preliminary mapping of the operating range of a hydrogen-air rotating detonation engine.
A detonation. Rotating detonation engines (RDE’s) represent a novel approach to using the higher efficiency detonation thermal cycle without some of the drawbacks of pulsed detonation engines (PDE’s).
Similar to the PDE, the RDE has the advantage of being operated over a Cited by: A detonation is a combustion wave that propagates at supersonic speed (2∼3 km/s) in a combustible mixture. There are many fundamental studies of detonation waves and detonation engine systems.
The detonation cycle has a higher thermal efficiency than a conventional constant-pressure combustion : Jiro Kasahara, Akira Kawasaki, Ken Matsuoka, Akiko Matsuo, Ikkoh Funaki, Daisuke Nakata, Masaharu Uc. for extremely compact and efficient engine concepts.
See the difference with the Wankel at: See how the photo-detonation Quasiturbine can save this amount of fuel. While most rotary engines use the principle of volume variation between a curve and a moving cord.Rotating Detonation Wave Propulsion: Experimental Challenges, Modeling, and Engine Concepts Frank K.
Lu and Eric M. Braun University of Texas at Arlington, Arlington, Texas Cited by: One such concept, using detonations (as opposed to deflagrations) to combust fuel and air mixtures, has been investigated since the ’s.
Using detonations allows for much higher efficiency engine operation. One of the most common types of detonation engines is the Pulsed Detonation Engine .