Supersonic Combustion and Scramjet Propulsion

A special issue of Aerospace (ISSN 2226-4310).

Deadline for manuscript submissions: closed (24 May 2024) | Viewed by 1423

Special Issue Editors


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Guest Editor
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150006, China
Interests: scramjet propulsion technology; supersonic combustion; flame propagation and stabilization; Ignition

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Guest Editor
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Interests: hypersonic propulsion technology; scramjet; rocket-scramjet combined cycle engine; pre-cooled turbo-rocket engine; engine control

Special Issue Information

Dear Colleagues,

Supersonic combustors are one of the key components of scramjet, the performance of which could make a deep influence on the whole performance of scramjets. In supersonic combustors, the velocity of the main airflow is of an order of kilometers per second; indeed, it exists in such a harsh flowing condition that it is extremely difficult to achieve the combustion organization and flame stabilization. In order to solve the issues about combustion efficiency improvement in scramjet propulsion systems, we are launching a Special Issue of Aerospace entitled “Supersonic Combustion and Scramjet Propulsion”. In doing so, we aim to enhance the investigations into flame stabilization mechanisms in scramjet combustors.

The Special Issue will cover areas of ignition, flame stabilization, flame propagation, combustion performance improvement, scramjet propulsion technology. We intend to publish original research articles, review articles and technical notes. The journal reviews papers within one week of submission, and a fast review process is among our strengths.

Dr. Junlong Zhang
Dr. Zhaohui Yao
Guest Editors

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Keywords

  • scramjet propulsion
  • supersonic combustion
  • flame stabilization
  • flame characteristics

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Published Papers (1 paper)

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Research

20 pages, 16746 KiB  
Article
An Experimental Investigation of Low-Frequency Active Excitation in Scramjet Combustor Using a Micro-Pulse Detonation Engine
by Keon-Hyeong Lee, Min-Su Kim, Jeong-Yeol Choi and Kenneth H. Yu
Aerospace 2024, 11(7), 559; https://doi.org/10.3390/aerospace11070559 - 8 Jul 2024
Viewed by 714
Abstract
A micro-pulse detonation engine (μPDE) was designed and installed to a direct-connect scramjet combustor of Pusan National University (PNU-DCSC). The active excitation on the scramjet combustor was experimentally studied using the μPDE operating at frequencies of 10–20 Hz. A vitiation air heater (VAH) [...] Read more.
A micro-pulse detonation engine (μPDE) was designed and installed to a direct-connect scramjet combustor of Pusan National University (PNU-DCSC). The active excitation on the scramjet combustor was experimentally studied using the μPDE operating at frequencies of 10–20 Hz. A vitiation air heater (VAH) was used to supply high-enthalpy vitiated air to the isolator and the scramjet combustor at a Mach number of 2.0, with a total temperature of 1600 K and a total pressure of 1.68 MPa. The exit of μPDE was located at the center of the cavity of the scramjet combustor. Active excitation was performed at equivalence ratios of 0.111 and 0.163, and characteristics were analyzed through Schlieren recording and bottom wall pressure measurement. As a result, when the detonation emitted from the μPDE entered the scramjet combustor, it instantly formed a shock train and moved forward within the scramjet combustor. The flame instantaneously changed from the cavity shear layer flame to the cavity flame. Through bottom wall pressure measurement, it was also observed that active excitation resulted in a significant pressure increase near the cavity compared to when active excitation was not performed. This revealed combustion characteristics, indicating improved combustion efficiency from the pressure increase in the scramjet combustor. Full article
(This article belongs to the Special Issue Supersonic Combustion and Scramjet Propulsion)
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