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Development of a Verification Method of Ablation Detection for a Flight Sensor

飞行传感器烧蚀检测验证方法的开发

基本信息

批准号：
21K04478
负责人：
酒井武治
金额：
$ 2.66万
依托单位：
Tottori University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

项目摘要

アブレータの炭化層進展を遠隔で検知する計測法を，赤外線サーモグラフィ(以下，熱カメラ)を使って開発した．本開発では，パワー密度の空間分布が一様な半導体レーザーを加熱源として用いた．供試体は，黒鉛と従来から用いているアブレータの２種類で行った．提案する遠隔検知法では，アブレータの炭化現象を，黒体塗料を塗布した円柱供試体側面の等温面進展として検知する．側面の温度進展で供試体全体の炭化進展を測定できるかなど，提案手法の成立要件を，黒鉛供試体加熱試験などを通して確かめた．他方，アブレータ試験では，供試体表面温度が熱カメラ仕様の上限を超えてしまう問題が発生したが，表面からの光を棒で遮る方法を採用することで回避した．ただし，アドホック法のため供試体表面から2mm程度の炭化層進展が観測できないなど課題も残った．埋込センサーによる直接法および熱カメラによる遠隔法を並行させて炭化層進展検知実験を試みた．その結果，予想通り，目視で評価した最終炭化層厚さの不確かさ内に，直接法で検知した炭化進展距離が収まった．遠隔法では，723±100K(以下，等温面群)の等温面群の進展で，最終炭化長さを検知できることがわかった．ただし，遠隔法での等温面群の時間進展は，直接法出力の時間履歴と定性的には同じであったが，定量的には満足のいく一致した結果は得られなかった．加えて，遠隔法の等温面群の温度範囲は，これまでに評価した直接法の電気伝導性発現温度よりも300～400K程度低く，予想に反した．遠隔法の方法論は概ね構築できたが，直接法を検証するほどに精度が高いとは言えず，遠隔法の検知範囲拡大とアブレータの大気圧下での炭化現象について今後見直すことで，精度を改善したい．

In the process of carbonization, it is necessary to know the measurement method, and the outside line makes it possible to open the airline. in this operation, the density is distributed in the space and half a half of the system is used for the source. The purpose of this paper is to make sure that the temperature of the surface is improved, and that the temperature of the surface is improved. The temperature of the surface is improved for the whole body to be carbonized, and the method of the proposal is established. On the other hand, the upper limit of the surface temperature of the body, the upper limit of the surface temperature of the body, the upper limit of the surface temperature of the body, the upper limit of the surface temperature of the body, the upper limit of the surface temperature of the body, the upper limit of the surface temperature, the temperature of the body, the upper limit of the surface temperature, the upper limit of the surface temperature, The purpose of this paper is to determine the degree of 2mm on the surface of the body, the degree of carbonization, the degree of carbonization. The direct method is used to know that the carbonization process is far away from the temperature field. The thermal insulation method, 723 ±100K (below, isothermal surface group), the temperature isothermal surface group, the most carbonized carbon, the most carbonized temperature, the temperature, temperature and temperature. The results show that the temperature range of the isothermal surface group is the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the isothermal surface group, the temperature range of the iso According to the method, the accuracy of carbonization will be improved in the future.

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Development and flight demonstration of an ablation sensor for reentry vehicle heat shield ablation measurement

用于再入飞行器隔热罩烧蚀测量的烧蚀传感器的开发和飞行演示

DOI：
发表时间：
2021
期刊：
影响因子：
0
作者：
Sakai;T
通讯作者：
T

Unsteady Testing of an Ablation Sensor in Torch Flame

烧蚀传感器在火炬火焰中的不稳定测试

DOI：
10.2322/tastj.19.591
发表时间：
2021
期刊：
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN
影响因子：
0
作者：
Sakai;T.;Iwamoto K.;Nakamura T.;Ishida Y.
通讯作者：
Ishida Y.

University-initiated hypersonic flight measurement technique development :A case in the field of aerothermodynamics

大学发起的高超声速飞行测量技术开发：以空气热力学领域为例