Depressurisation Restart Method for a Hypersonic Inlet with Closed-Plenum Mass Flow Metering
Paper
Noller, Lachlan J., Zander, Fabian and Buttsworth, David. 2024. "Depressurisation Restart Method for a Hypersonic Inlet with Closed-Plenum Mass Flow Metering." AIAA Aviation Forum and ASCEND 2024. Las Vegas, United States 29 Jul - 02 Aug 2024 United States. https://doi.org/10.2514/6.2024-4116
Paper/Presentation Title | Depressurisation Restart Method for a Hypersonic Inlet with Closed-Plenum Mass Flow Metering |
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Presentation Type | Paper |
Authors | Noller, Lachlan J., Zander, Fabian and Buttsworth, David |
Journal or Proceedings Title | Proceedings of AIAA Aviation Forum and ASCEND 2024 |
Year | 2024 |
Place of Publication | United States |
ISBN | 9781624107160 |
Digital Object Identifier (DOI) | https://doi.org/10.2514/6.2024-4116 |
Web Address (URL) of Paper | https://arc.aiaa.org/doi/10.2514/6.2024-4116 |
Web Address (URL) of Conference Proceedings | https://arc.aiaa.org/doi/book/10.2514/MAVAS24 |
Conference/Event | AIAA Aviation Forum and ASCEND 2024 |
Event Details | AIAA Aviation Forum and ASCEND 2024 Delivery In person Event Date 29 Jul 2024 to end of 02 Aug 2024 Event Location Las Vegas, United States |
Abstract | The current work focuses on development of a restart mechanism which utilises flow unsteadiness to promote restart of a hypersonic inlet operating at Mach 7. To test the restart method, an inlet geometry was first established where the inlet is: 1) capable of impulsively starting without assistance of any other mechanisms; 2) caused to unstart due to sonic injection with in the isolator simulating high combustor backpressure; and 3) then sustain the unstarted flow state with the sonic injection turned off. The inlet backpressure was controlled by injection of compressed air at sonic velocity through a series of portholes directed normal to the flow and located downstream of the inlet to simulate pressure rise due to excessive combustion heat release. Subsequent experiments then explore the sensitivities of the proposed inlet restart mechanism by control of the sonic air jet injection properties varying both the injection jet pressure and jet depressurisation rate primarily. Results indicate that if a sufficiently high rate of injection depressuration can be achieved, the inlet will temporarily enter into a buzz mode prior to restarting. However, restart is not achieved if the depressurisation time is too long. |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400199. Aerospace engineering not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Southern Queensland |
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