Nonequilibrium Radiation Heating Acting on Atmospheric Entry Systems for Planets with CO2 Atmosphere

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289326
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: Kazuhisa Fujita 国立研究開発法人宇宙航空研究開発機構, 研究開発部門, 主幹研究開発員 (90281584)
• Co-Investigator(Kenkyū-buntansha): 鈴木 俊之 国立研究開発法人宇宙航空研究開発機構, 研究開発部門, 主任研究員 (20392839) ; 高柳 大樹 国立研究開発法人宇宙航空研究開発機構, 研究開発部門, 研究員 (70513422) ; 小澤 宇志 国立研究開発法人宇宙航空研究開発機構, 研究開発部門, 研究員 (70567544) ; 野村 哲史 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 研究員 (80709361)
• Co-Investigator(Renkei-kenkyūsha): Adrien Lemal 宇宙航空研究開発機構, 航空技術部門・宇宙航空プロジェクト, 研究員 (70770668)
• Research Collaborator: Nishimura Sayaka 静岡大学, 大学院・総合科学技術研究科 ; Yamada Toru 静岡大学, 大学院・総合科学技術研究科 ; Bando Kihiro Ecole Polytechnique
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 宇宙航空流体力学 / 二酸化炭素 / 大気突入 / 輻射加熱 / 赤外線分光 / 火星探査

Outline of Final Research Achievements

An existing shock　tube　facility　has been modified　into　an　expansion　tube,　in　which　atmospheric entry conditions for Mars exploration can be realized around test models. In addition, an instantaneous infrared spectroscopy system has been developed by using an infrared CCD camera having a gating function. Above all, an infrared spectroscopic measurement system for Martian atmospheric entry systems, which is the only facility in the nation, has been developed, and the world’s first results of infrared spectra distribution around a Martian entry capsule have been obtained successfully. Based on the experimental results, the world’s most accurate database for infrared CO2 radiation has been developed. Using this improved database, accuracy of the radiation prediction code is successfully improved from the past value of 50% into 90%, which is currently the world’s greatest.

Free Research Field

航空宇宙工学