LIQUID LEVEL SHAPE MEASURING DEVICE OF PROPELLANT TANK AND METHOD

To provide a liquid level shape measuring device of a propellant tank capable of accurately measuring an amount of propellants in a gravity-free state, a state in which an acceleration direction changes, and a state in which the amount of propellants is small, and a method.SOLUTION: A liquid level shape measuring device of a propellant tank comprises a probe complex 10 fixed to an external surface 1a of a propellant tank 1, and an arithmetic device 20 which calculates a shape of a propellant liquid level according to the time difference from emission of an ultrasonic wave 5 by the probe complex 10 to reception of a reflection wave 5b of the ultrasonic wave 5. The probe complex 10 comprises a transmission probe 12 which emits the ultrasonic wave 5, and a plurality of reception probes 14. The plurality of reception probes 14 surround the transmission probe 12, are fixed each other at intervals, and receive the reflection wave 5b.SELECTED DRAWING: Figure 2 【課題】無重力状態、加速方向が変化する状態、及び推薬残量が少ない状態において、推薬量を正確に測定することができる推薬タンクの液面形状計測装置と方法を提供する。【解決手段】推薬タンク１の外面１ａに固定された探触子複合体１０と、探触子複合体１０による超音波５の発信から超音波５の反射波５ｂの受信までの時間差により推薬液面の形状を算出する演算装置２０と、を備える。探触子複合体１０は、超音波５を発信する送信探触子１２と、複数の受信探触子１４とを有する。複数の受信探触子１４は、送信探触子１２を囲み、かつ互いに間隔を隔てて固定され、反射波５ｂを受信する。【選択図】図２