IMECH-IR  > 高温气体动力学国家重点实验室
External-Compression Supersonic Inlet Free from Violent Buzz
Chen H; Tan H; Liu YZ; Zhang QF(张启帆)
Corresponding AuthorTan, Hui-jun(
Source PublicationAIAA JOURNAL
AbstractTo greatly improve the supersonic inlet stability at low cost of structural weight and complexity, a novel buzz suppression strategy based on fixed-geometry air bleed is developed. It is designed to have plenty of narrow flush slots that are widely distributed along the compression surface. Using the natural pressure gradient varying with the terminal shock position, it is capable of creating self-adaptive bypass flow removal upstream of the internal duct. A strong stabilizing effect can be thus automatically produced on the subcritical flowfield by eliminating shock-induced separation and discharging excessively captured airflow. Simultaneously, the undesired air leakage at the critical regime can be naturally restricted to prevent a prohibitive performance penalty during normal operation. To verify the effectiveness, an external-compression inlet model is specially designed and carefully tested at freestream Mach numbers of 2.0 and 2.5 with an almost full exit throttle range considered (0-99.1%). Results indicate that the subcritical stable-flow range is remarkably extended from a throttle threshold of 53.7% to that of 86.4% and 73.7%, respectively, after the usage of the proposed bleed method. Moreover, intense flow instability is totally eliminated, even when the duct exit is almost closed. Further analysis reveals that the bleed flow rate at the near-critical state is not beyond 1% of the inlet flow rate for both freestream conditions. It actually causes no obvious loss of the inlet flow rate. Also, the following total pressure drop and drag increase are below 0.4%. Additionally, the observed unique buzz flow implies that the buzz origin is not necessarily limited to the two known sources, as opposed to the long-established understanding.
Indexed BySCI ; EI
WOS IDWOS:000469235700025
WOS Research AreaEngineering
WOS SubjectEngineering, Aerospace
Funding ProjectNational Natural Science Foundation of China[11532007] ; Jiangsu Province 333 Project[BRA2018031]
Funding OrganizationNational Natural Science Foundation of China ; Jiangsu Province 333 Project
ContributorTan, Hui-jun
Citation statistics
Document Type期刊论文
Recommended Citation
GB/T 7714
Chen H,Tan H,Liu YZ,et al. External-Compression Supersonic Inlet Free from Violent Buzz[J]. AIAA JOURNAL,2019,57(6):2513-2523.
APA Chen H,Tan H,Liu YZ,&张启帆.(2019).External-Compression Supersonic Inlet Free from Violent Buzz.AIAA JOURNAL,57(6),2513-2523.
MLA Chen H,et al."External-Compression Supersonic Inlet Free from Violent Buzz".AIAA JOURNAL 57.6(2019):2513-2523.
Files in This Item: Download All
File Name/Size DocType Version Access License
Jp2019199.pdf(4679KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen H]'s Articles
[Tan H]'s Articles
[Liu YZ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen H]'s Articles
[Tan H]'s Articles
[Liu YZ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen H]'s Articles
[Tan H]'s Articles
[Liu YZ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Jp2019199.pdf
Format: Adobe PDF
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.