Enlargement of operation envelope of the NAL 1.27 m hypersonic wind tunnel: Representation and application of statistical uncertainty

Autor:	Nagai, Shinji, Tsuda, Shoichi, Koyama, Tadao, Hirabayashi, Noriaki, Sekine, Hideo, Hozumi, Koichi
Jazyk:	japonština
Rok vydání:	2004
Předmět:	ノズル校正 hypersonic wind tunnel 統計解析 極超音速風洞 wind tunnel model statistical uncertainty 統計的不確実性 風洞試験 stagnation point statistical analysis 風洞模型 よどみ点 nozzle calibration wind tunnel test
Zdroj:	宇宙航空研究開発機構特別資料: 第66回 風洞研究会議論文集 = JAXA Special Publication: Proceedings of the Wind Tunnel Technology Association 66th Meeting. :13-22
ISSN:	1349-113X
Popis:	The Mach 10 nozzle of the National Aerospace Laboratory phi1.27 m hypersonic wind tunnel was calibrated at lower total temperature conditions which gave reduction of thermal load of the facility and the lowest total pressure (P0 = 1.0 MPa) operation. Repeatability among multi point calibration tests and non-liquefied flow were examined by statistical uncertainty assessment of measured Mach numbers. Enlargement of the Re number range, reduction of total temperature about 100 K and heat up time of the air heater were successfully attained. Represented statistical uncertainties of flow conditions clearly show that the NAL 1.27 m tunnel has better flow uniformity than that of the AEDC VKF-C tunnel. 資料番号: AA0047428003 レポート番号: JAXA-SP-03-003
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=jairo_______::3d7afc4664e6e10f178d076931a257c8 http://id.nii.ac.jp/1696/00006586/ Zobrazit plný text záznamu