Improving the Stability and Operating Envelope for a Small Scale, High Frequency Rotating Detonation Engine (RDE)
Document Type
Conference Proceeding
Publication Date
1-2021
Abstract
Rotating Detonation Engine (RDE) design has matured to the point that nominal sizing relations of critical RDE components such as channel gap, channel length, and channel diameter are well understood and documented. However, the actual bounds of these ideal ranges are not well understood and current interest resides in investigating the limits of what can be operable. The objective of this research was to build upon a recently developed Micro-RDE design with an outer diameter of 28mm operating on Nitrous Oxide and Ethylene. Previously, unstable detonation with a wave frequency of 14.0 kHz was achieved using a jets in crossflow (JIC) injection scheme. Current design changes to this injection scheme have been made and a limited evaluation of the new resultant operating map was conducted. Testing was done over a range of mass flows (0.035-0.075 kg/s) and equivalence ratios (Φ =1.1-1.2) with a focus on how the changes affected stability. A stable one wave mode with frequencies up to 16.8 kHz was observed indicating improved stability. Longer run times are required to further substantiate the current results.
Source Publication
AIAA Scitech 2021 Forum
Recommended Citation
Fiorino, Nathan T, Joseph Dechert, Nathan J Snow, Frederick R Schauer, Marc D Polanka, Stephen A Schumaker, and Brian Sell. “Improving the Stability and Operating Envelope for a Small Scale, High Frequency Rotating Detonation Engine (RDE).” In AIAA Scitech 2021 Forum. American Institute of Aeronautics and Astronautics, 2021. https://doi.org/10.2514/6.2021-1030.
Comments
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Conference Session: Fuel and Diluents II