@article{oai:jaxa.repo.nii.ac.jp:00032838,
 author = {倉谷, 健治 and 山下, 雅道 and 小田, 欣司 and 梁, 洪森 and 清水, 洋一 and KURATANI, Kenji and YAMASHITA, Masamichi and ODA, Kinji and Liang, Hong Sen and SHIMIZU, Yoichi},
 journal = {宇宙科学研究所報告. 特集: 液水/液酸エンジンの開発研究報告},
 month = {Mar},
 note = {液位計として連続測定用の静電容量, 差圧計, ポイントセンサとして炭素抵抗, Si-diode, Pt-, W-線等を試用した。また間接法として流量計積分, タービン流量計のパルスカウント, 噴射器差圧よりの流量積分等も試みた。最も信頼度の高いのは静電容量とガスクロマトグラフ用フィラメントであり, 後者は細いタングステン線に金メッキが施されている。これら液位計の定量的比較が静電容量対ホットワイヤ;流量積分, 差圧計, パルスカウント等で行われ良好な結果を得ている。PU制御はホットワイヤから多発される信号の中からマイコンに組んだ論理回路で真の信号を識別し円滑に動作させるのに成功した。液位計測に関連してマイコンによるデータ処理方式を確立し, 実時間でのモニタ, 指示に有効に使用されている。例えば供給ライン各点の温度は絶対温度に換算されてカラーディスプレィ, パネルメータ, プリンタに指示され, 質量流量比O/FはXY-プロッタに画かれている。なお, 付記としてホットワイヤについての詳細な検討, 直交多項式を用いる最小二乗法が述べられてえる。, Various types of liquid level sensors have been tested. As continuous reading sensors a capacitance gauge and a pressure head gauge were used and as point reading sensors a carbon-resistor, a small Si-diode and varieties of hot wires made of thin platinum and tungsten wires were investigated. Other indirect methods to measure the change of liquid level such as integration of flow meter reading, pulse count evolved from a turbine flow meter, and integration of flow rate calculated from the pressure difference at the injector surface were also examined, because they are sometimes useful as a supplementary method to estimate the liquid level change. The most reliable sensors which have been used by us are capacitance gauges and gaschromatographic catharometer's fillaments made of thin tungsten wire. The latter was gold-plated on its surface. The experimental results obtained from these sensors were compared quantitatively and the excellent agreement among the results of different methods such as a capacitance gauge and hot wiress : pressure head, integration of flow rate and pulse count summation etc. were obtained. A few kinds of methods to perform smooth propellant utilization control were tried and finally a special logic programmed in a micro-computer was used to distinguith the true signals in a pile of complex indications sent from the hot wire arrays of both tanks. In relation to the measurement of liquid level, a data handling system using a micro-computer was established. It works well to monitor and display various items in real time. Temperatures along the supply lines expressed in deg. Kelvin are the good example to monitor in order to operate the engine system and they are indicated on a color-television, a panel meter and a printer. Another item was the mass flow rate ratio O/F during the hot runs of thrust chambers and feed systems and it was displayed on a XY-plotter., 資料番号: SA0166607000},
 pages = {353--375},
 title = {液位計測},
 volume = {6},
 year = {1983}
}