To provide a liquid propellant supply device which can be downsized so as to be mounted in a small or very small satellite and satisfy a demand value of a satellite side propellant load, and to provide a satellite propulsion unit.SOLUTION: A liquid propellant supply device includes a propellant pump device 20 which pumps a liquid propellant L with a pumping pressure P3 exceeding a supply pressure P1 of the liquid propellant L needed for thrusters 30 for satellite propulsion. The propellant pump device 20 has hollow metal foil tanks 22 and an electric pump 28. Each metal foil tank 22 comprises metal foils 23 which are overlapped and welded to each other at outer peripheral edges, has a liquid propellant L discharge pipe 24, and may discharge the liquid propellant L filling the interior at a decompressed space having a pressure lower than or equal to the atmospheric pressure. The electric pump 28 compresses the liquid propellant L discharged from the discharge pipe 24 to the pumping pressure P3.SELECTED DRAWING: Figure 2
【課題】小型又は超小型の衛星に搭載可能に小型化でき、かつ衛星側の推進薬搭載量の要求値を満たすことができる液体推進薬供給装置と衛星用推進装置を提供する。【解決手段】衛星推進用のスラスタ30に必要な液体推進薬Lの供給圧力P1を超える圧送圧力P3で液体推進薬Lを圧送する推進薬圧送装置20を備える。推進薬圧送装置20は、中空の金属箔タンク22と電動ポンプ28とを有する。金属箔タンク22は、重ね合わされ外周縁が互いに溶着された複数の金属箔23からなり、液体推進薬Lの排出管24を有し、内部に充填した液体推進薬Lを大気圧以下の減圧空間において排出可能である。電動ポンプ28は、排出管24から排出された液体推進薬Lを圧送圧力P3まで加圧する。【選択図】図2
LIQUID PROPELLANT SUPPLY DEVICE AND SATELLITE PROPULSION UNIT
液体推進薬供給装置と衛星用推進装置
2021-10-21
Patent
Electronic Resource
Japanese