JP2014205471A - Propellant tank - Google Patents

Propellant tank Download PDF

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JP2014205471A
JP2014205471A JP2013085511A JP2013085511A JP2014205471A JP 2014205471 A JP2014205471 A JP 2014205471A JP 2013085511 A JP2013085511 A JP 2013085511A JP 2013085511 A JP2013085511 A JP 2013085511A JP 2014205471 A JP2014205471 A JP 2014205471A
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propellant
central axis
propellant tank
discharge port
shell
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啓介 山田
Keisuke Yamada
啓介 山田
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IHI Aerospace Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a propellant tank that enables a propellant to be collected to the other end, even when an internal device passing through the whole propellant tank is not used in zero gravity.SOLUTION: A hollow propellant tank 30 for housing a propellant 32 inside includes: a taper-shaped truncated-cone surface 38 that has a hollow part 34 inside and that is symmetric with respect to a central axis 36; a large hemispherical shell 40 that is fluid-tightly connected to one end 50, having a large cross-sectional area by a surface perpendicular to the central axis 36, of ends of the truncated-cone surface 38; a small hemispherical shell 42 that is fluid-tightly connected to the other end 52 of the ends; and an exhaust port 44 that is provided on the central axis 36 of the small hemispherical shell 42 and that discharges the propellant 32.

Description

本発明は、無重力もしくは極低重力下で使用する衛星用の推薬タンクに関する。   The present invention relates to a propellant tank for satellites used under zero gravity or extremely low gravity.

推薬タンクは、液状の推薬を内部に収納するタンクである。   A propellant tank is a tank which stores a liquid propellant inside.

図１は、従来の推薬タンク２の説明図である。
従来、推薬タンク２は、半球殻１２を円筒でつないだ形状もしくは球形に、上下対称に形成されており、上下のうちの他端（図１では下端）に排出口１４が形成されている。 FIG. 1 is an explanatory view of a conventional propellant tank 2.
Conventionally, the propellant tank 2 is formed vertically symmetrically in a shape or a spherical shape in which hemispherical shells 12 are connected by a cylinder, and a discharge port 14 is formed at the other of the upper and lower ends (lower end in FIG. 1). .

衛星の軌道上は無重力もしくは極低重力であるため、表面積が一番小さい形状に推薬４が変形することより、推薬４の液面形状が決まる。従来の推薬タンク２は、形状が上下対称であるため、わずかな姿勢制御等の外乱加速度により、上下のどちらの方向にも液が動き得た。
そのため、推薬タンク２の上下のうちの一端（図１では上端）に移動した推薬４を表面張力で捕捉し、推薬４を排出口１４に導き、ガス１８の混入なしに推薬４を排出すための内部デバイス１６が推薬タンク２の内部に設けられていた。 Since the orbit of the satellite is zero gravity or extremely low gravity, the shape of the liquid surface of the propellant 4 is determined by deforming the propellant 4 into a shape having the smallest surface area. Since the conventional propellant tank 2 has a vertically symmetrical shape, the liquid can move in either the vertical direction due to disturbance acceleration such as slight attitude control.
Therefore, the propellant 4 that has moved to one of the upper and lower ends of the propellant tank 2 (the upper end in FIG. 1) is captured by surface tension, the propellant 4 is guided to the discharge port 14, and the propellant 4 is not mixed with the gas 18. An internal device 16 for discharging the propellant was provided inside the propellant tank 2.

Ｗａｌｔｅｒ Ｈ． Ｔａｍ， Ｇｒａｙ Ｈ． Ｋａｗａｈａｒａ， Ｄｏｎａｌｄ Ｅ． Ｊａｅｋｌｅ Ｊｒ．， Ｌａｕｒｉｅ Ｗ． Ｌａｒｓｓｏｎ，“Ｄｅｓｉｇｎ ａｎｄ ｍａｎｕｆａｃｔｕｒｅ ｏｆ ａ ｐｒｏｐｅｌｌａｎｔ ｔａｎｋ ａｓｓｅｍｂｌｙ”，ＡＩＡＡ ２０００−３４４４Walter H. Tam, Gray H. et al. Kawahara, Donald E. et al. Jaekle Jr. Laurie W. Larsson, “Design and manufacture of a propellant tank assembly”, AIAA 2000-3444.

上述した非特許文献１の推薬タンク２は、タンク形状が上下対称であるため、姿勢制御等の加速度条件によっては、推薬４が一端側（図１では上端側）まで移動してしまうことがあった。そのため、一端側に移動した推薬４を他端側の排出口１４まで導く必要があり、タンクの一端側から排出口１４まで、推薬タンク２全体を貫くような大きな内部デバイス１６が必要であった。   Since the propellant tank 2 of Non-Patent Document 1 described above has a vertically symmetrical tank shape, the propellant 4 may move to one end side (upper end side in FIG. 1) depending on acceleration conditions such as posture control. was there. Therefore, it is necessary to guide the propellant 4 moved to one end side to the discharge port 14 on the other end side, and a large internal device 16 that penetrates the entire propellant tank 2 from one end side of the tank to the discharge port 14 is necessary. there were.

本発明は上述した問題点を解決するために創案されたものである。すなわち本発明の目的は、無重力下において、推薬タンク全体を貫く内部デバイスを使用しなくても、推薬を他端に集められる推薬タンクを提供することにある。   The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a propellant tank in which propellant can be collected at the other end without using an internal device penetrating the entire propellant tank under zero gravity.

本発明によれば、推薬を内部に収納する中空の推薬タンクであって、
内部に中空部を有し中心軸に対し対称なテーパ形状の切頭円錐面と、
前記切頭円錐面の端部のうち前記中心軸に垂直な面による断面積が大きい一端に液密に連結する半球形状の大半球殻と、
前記端部のうちの他端に液密に連結する半球形状の小半球殻と、
小半球殻の前記中心軸上に設けられ推薬を排出する排出口と、を備える、ことを特徴とする推薬タンクが提供される。 According to the present invention, it is a hollow propellant tank for storing propellant inside,
A tapered frustoconical surface having a hollow inside and symmetrical with respect to the central axis;
A hemispherical most spherical shell that is liquid-tightly connected to one end having a large cross-sectional area by a plane perpendicular to the central axis among the ends of the truncated conical surface;
A hemispherical small hemispherical shell that is liquid-tightly connected to the other of the ends;
There is provided a propellant tank comprising a discharge port provided on the central axis of the small hemispherical shell for discharging propellant.

また大半球殻又は小半球殻の前記中心軸に平行な面による断面形状は、半円、楕円、もしくはカッシーニ曲線で構成される。   In addition, the cross-sectional shape of the most spherical shell or small hemispherical shell by a plane parallel to the central axis is a semicircle, an ellipse, or a Cassini curve.

また前記排出口の周辺に設けられ推薬を表面張力により捕捉し前記排出口へ導く内部デバイスを備える。   An internal device is provided around the discharge port to capture the propellant by surface tension and guide it to the discharge port.

内部デバイスは、前記中心軸を中心に放射状に広がる複数の板であるデバイス板と、
前記中心軸を中心とする円筒面と該円筒面の両端とに複数の穴を有する中空円筒形の筒であるデバイス筒とを備え、
前記排出口が前記デバイス筒の内部で開口する。 The internal device is a device plate that is a plurality of plates extending radially about the central axis;
A device cylinder that is a hollow cylindrical cylinder having a plurality of holes at both ends of the cylindrical surface around the central axis and the cylindrical surface;
The discharge port opens inside the device cylinder.

また大半球殻の前記中心軸上に設けられ前記内部にガスを導入するガス導入口を備える。   A gas inlet is provided on the central axis of the spherical shell for introducing gas into the interior.

上述した本発明の推薬タンクによれば、推薬タンクが内部に中空部を有し中心軸に対し対称なテーパ形状の切頭円錐面と、前記切頭円錐面の端部のうち前記中心軸に垂直な面による断面積が大きい一端に液密に連結する半球形状の大半球殻と、前記端部のうちの他端に液密に連結する半球形状の小半球殻とを備え、小半球殻に排出口を有するので、無重力によってガスが中空部で、球形のガス溜まりになろうとした時に、大半球殻側と小半球殻側とで液面の半径が異なるため、表面張力の差が生じる。それにより、ガス溜まりを一端側へ移動させることができる。そのため、推薬がガス溜まりに押されて他端側に集まるため、推薬タンクの中空部の他端側のみに内部デバイスを設置するだけで、推薬を排出口に導くことができる。   According to the propellant tank of the present invention described above, the propellant tank has a hollow portion inside and a tapered truncated conical surface symmetrical with respect to the central axis, and the center of the end portions of the truncated conical surface. A hemispherical most spherical shell that is liquid-tightly connected to one end having a large cross-sectional area by a plane perpendicular to the axis, and a small hemispherical shell that is liquid-tightly connected to the other end of the end portions. Since the hemispherical shell has a discharge port, when the gas is trying to become a spherical gas pool due to weightlessness due to weightlessness, the liquid surface radius is different between the spherical shell side and the small hemispherical shell side. Occurs. Thereby, the gas reservoir can be moved to one end side. Therefore, since the propellant is pushed by the gas reservoir and gathers at the other end side, the propellant can be guided to the discharge port only by installing the internal device only at the other end side of the hollow portion of the propellant tank.

従来の推薬タンクの説明図である。It is explanatory drawing of the conventional propellant tank. 本発明の推薬タンクの説明図である。It is explanatory drawing of the propellant tank of this invention.

以下、本発明の実施形態を図面に基づいて説明する。なお、各図において共通する部分には同一の符号を付し、重複した説明を省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

図２は、本発明の推薬タンク３０の説明図である。
本発明の推薬タンク３０は、無重力もしくは極低重力下で使用し、液状の推薬３２を内部に収納する中空の衛星用タンクである。また本発明の推薬タンク３０は、切頭円錐面３８、大半球殻４０、小半球殻４２、及び排出口４４を備える。
なお、推薬３２は、例えばヒドラジン、ＭＭＨ、四酸化二窒素、等が好ましい。また推薬３２は、その他の液体でもよい。 FIG. 2 is an explanatory diagram of the propellant tank 30 of the present invention.
The propellant tank 30 of the present invention is a hollow satellite tank that is used under zero gravity or extremely low gravity, and stores a liquid propellant 32 therein. The propellant tank 30 of the present invention includes a truncated conical surface 38, a mostly spherical shell 40, a small hemispherical shell 42, and a discharge port 44.
The propellant 32 is preferably hydrazine, MMH, dinitrogen tetroxide, or the like. The propellant 32 may be other liquid.

切頭円錐面３８は、内部に中空部３４を有し中心軸３６に対し対称なテーパ形状の側面である。切頭円錐面３８は、切頭円錐面３８の端部のうち中心軸３６に垂直な面による断面積が大きい一端５０（図２では上端）に大半球殻４０が連結され、端部のうちの他端５２に小半球殻４２が連結されている。   The truncated conical surface 38 is a tapered side surface having a hollow portion 34 inside and symmetrical with respect to the central axis 36. The truncated conical surface 38 has a spherical shell 40 connected to one end 50 (the upper end in FIG. 2) having a large cross-sectional area by a surface perpendicular to the central axis 36 among the ends of the truncated conical surface 38. A small hemispherical shell 42 is connected to the other end 52 of the first half.

大半球殻４０は、半球形状のタンクの壁面であり、切頭円錐面３８に液密に連結している。   Most of the spherical shell 40 is a wall surface of a hemispherical tank and is liquid-tightly connected to the truncated conical surface 38.

小半球殻４２は、端部のうちの他端５２（図２では下端）に液密に連結する半球形状のタンクの壁面である。
小半球殻４２の中心軸３６上には、排出口４４を備える。 The small hemispherical shell 42 is a wall surface of a hemispherical tank that is liquid-tightly connected to the other end 52 (the lower end in FIG. 2) of the end portions.
A discharge port 44 is provided on the central axis 36 of the small hemispherical shell 42.

なお、大半球殻４０又は小半球殻４２の中心軸３６に平行な面による断面形状は、半円、楕円、もしくはカッシーニ曲線で構成されることが好ましい。なお、カッシーニ曲線とは、方程式（ｘ２＋ｙ２）２−２ａ２（ｘ２−ｙ２）＝ｂ４−ａ４（ａ，ｂは正の定数）によって表わされる四次曲線をいう。 In addition, it is preferable that the cross-sectional shape by the surface parallel to the central axis 36 of most spherical shell 40 or the small hemispherical shell 42 is comprised with a semicircle, an ellipse, or a Cassini curve. The Cassini curve refers to a quartic curve represented by the equation (x 2 + y 2 ) 2 −2a 2 (x 2 −y 2 ) = b 4 −a 4 (a and b are positive constants).

また、本発明の推薬タンク３０は、内部デバイス４６とガス導入口４８とを備える。   The propellant tank 30 of the present invention includes an internal device 46 and a gas inlet 48.

内部デバイス４６は、排出口４４の周辺に設けられ、表面張力により捕捉した推薬３２を排出口４４へ導く。つまり内部デバイス４６は、他端５２の側（小半球殻４２の側）のみに設けられている。   The internal device 46 is provided around the discharge port 44 and guides the propellant 32 captured by the surface tension to the discharge port 44. That is, the internal device 46 is provided only on the other end 52 side (small hemispherical shell 42 side).

また内部デバイス４６は、中心軸３６を中心に放射状に広がる複数の板であるデバイス板４６ａと、中心軸３６を中心とする円筒面と該円筒面の両端とに複数の穴を有する中空円筒形の筒であるデバイス筒４６ｂとを備える。
デバイス筒４６ｂは、デバイス筒４６ｂの内部に入ったガスを逃がすための開口を有する。
なお、内部デバイス４６の形状は、これに限らず、その他の周知の形状でもよい。 The internal device 46 has a hollow cylindrical shape having a device plate 46a that is a plurality of plates extending radially around the central axis 36, a cylindrical surface centered on the central axis 36, and a plurality of holes at both ends of the cylindrical surface. A device cylinder 46b.
The device cylinder 46b has an opening for allowing the gas that has entered the device cylinder 46b to escape.
The shape of the internal device 46 is not limited to this, and may be other known shapes.

排出口４４は、小半球殻４２の中心軸３６上に設けられ、推薬３２を排出する。
また排出口４４は、デバイス筒４６ｂの内部で開口する。 The discharge port 44 is provided on the central axis 36 of the small hemispherical shell 42 and discharges the propellant 32.
The discharge port 44 opens inside the device tube 46b.

ガス導入口４８は、大半球殻４０の中心軸３６上に設けられ、推薬タンク３０の内部にガスを導入する。ガス導入口４８からガスを導入することにより、推薬３２をガスで押して、推薬３２を排出口４４に導くことができる。
ガス導入口４８から導入するガスは、窒素ガス、ヘリウムガス、代替フロン、等が好ましい。またガスは、その他の気体でもよい。 The gas inlet 48 is mostly provided on the central axis 36 of the spherical shell 40 and introduces gas into the propellant tank 30. By introducing the gas from the gas introduction port 48, the propellant 32 can be pushed with the gas and the propellant 32 can be guided to the discharge port 44.
The gas introduced from the gas inlet 48 is preferably nitrogen gas, helium gas, alternative chlorofluorocarbon, or the like. The gas may be other gas.

すなわち、表面張力をσ、ガス溜まり２０の大半球殻４０の側の半径をＲ１、ガス溜まり２０の小半球殻４２の側の半径をＲ２としたときに、無重力もしくは極低重力下で、液中に含まれる気泡（ガス溜まり２０）にかかる大半球殻４０の側の圧力ΔＰ１と小半球殻４２の側の圧力ΔＰ２とは、以下の数式（１）と（２）で示される。

ΔＰ１＝２δ／Ｒ１ ・・・（１）

ΔＰ２＝２δ／Ｒ２ ・・・（２）
That is, when the surface tension is σ, the radius of the gas reservoir 20 on the most spherical shell 40 side is R1, and the radius of the gas reservoir 20 on the small hemispherical shell 42 side is R2, The pressure ΔP1 on the most spherical shell 40 side and the pressure ΔP2 on the small hemispherical shell 42 side applied to the bubbles (gas reservoir 20) contained therein are expressed by the following equations (1) and (2).

ΔP1 = 2δ / R1 (1)

ΔP2 = 2δ / R2 (2)

ここで、Ｒ１＞Ｒ２であるため、ガス溜まり２０は、以下の数式（３）で示される圧力ΔＰ３の圧力差で小半球殻４２の側から大半球殻４０の側へ移動する。

ΔＰ３＝ΔＰ２−ΔＰ１＝２δ（１／Ｒ２−１／Ｒ１） ・・・（３）
Here, since R1> R2, the gas reservoir 20 moves from the side of the small hemispherical shell 42 to the side of the most spherical shell 40 due to the pressure difference of the pressure ΔP3 expressed by the following formula (3).

ΔP3 = ΔP2−ΔP1 = 2δ (1 / R2-1 / R1) (3)

このように本発明の推薬タンク３０は、両端５０，５２に設けられた半球殻（大半球殻４０と小半球殻４２）の直径が異なり、側面がそれらの半球殻４０，４２を繋ぐテーパ形状に形成されている。   Thus, in the propellant tank 30 of the present invention, the diameters of the hemispherical shells (mostly the spherical shell 40 and the small hemispherical shell 42) provided at both ends 50 and 52 are different, and the side surfaces are tapered to connect the hemispherical shells 40 and 42. It is formed into a shape.

また無重力下もしくは極低重力下でガス溜まり２０が中空部３４で球形形状になろうとした時に、推薬３２は、表面積が最小限になる形に変形する。そこで、切頭円錐面３８の直径が両端５０，５２で異なるため、推薬３２の液面の半径Ｒ２，Ｒ１が大半球殻４０の側と小半球殻４２の側とで異なることとなり、表面張力の差が生じる。それにより、ガス溜まり２０を一端５０の側（大半球殻４０側）に移動させ、ガス溜まり２０に押された推薬３２を他端５２の側（小半球殻４２側）に集めることができる。   In addition, when the gas reservoir 20 is about to become a spherical shape in the hollow portion 34 under zero gravity or extremely low gravity, the propellant 32 is deformed so as to minimize the surface area. Therefore, since the diameter of the truncated conical surface 38 is different at both ends 50 and 52, the radius R2 and R1 of the liquid surface of the propellant 32 is mostly different between the spherical shell 40 side and the small hemispherical shell 42 side. A difference in tension occurs. Thereby, the gas reservoir 20 can be moved to the one end 50 side (mostly the spherical shell 40 side), and the propellant 32 pushed by the gas reservoir 20 can be collected on the other end 52 side (small hemispherical shell 42 side). .

また、本発明の推薬タンク３０は、切頭円錐面３８のテーパを利用して推薬３２を他端５２の側（小半球殻４２側）に集めることができるため、他端５２の側の排出口４４の周囲に内部デバイス４６を設けるだけで、推薬３２を排出口４４に導くことができる。そのため、従来例のような、推薬タンク２の全体を貫くような大きな内部デバイス１６を必要としない。   Further, the propellant tank 30 of the present invention can collect the propellant 32 on the side of the other end 52 (small hemispherical shell 42 side) by utilizing the taper of the truncated conical surface 38, so The propellant 32 can be guided to the discharge port 44 simply by providing the internal device 46 around the discharge port 44. Therefore, the large internal device 16 which penetrates the whole propellant tank 2 like a prior art example is not required.

上述した本発明の推薬タンク３０によれば、推薬タンク３０が内部に中空部３４を有し中心軸３６に対し対称なテーパ形状の切頭円錐面３８と、切頭円錐面３８の端部のうち中心軸３６に垂直な面による断面積が大きい一端５０に液密に連結する半球形状の大半球殻４０と、端部のうちの他端５２に液密に連結する半球形状の小半球殻４２とを備え、小半球殻４２に排出口４４を有するので、推薬タンク３０の全体の形状が大半球殻４０側から小半球殻４２側にかけてテーパ状に小さくなっている。無重力によって中空部３４に溜まったガスが球形のガス溜まり２０になる時に、一端５０の側（大半球殻４０の側）と他端５２の側（小半球殻４２の側）とで液面の半径Ｒ２，Ｒ１が異なるため、表面張力の差が生じる。それにより、ガス溜まり２０を一端５０の側へ移動させることができる。そのため、推薬３２がガス溜まり２０に押されて他端５２の側に集まるため、推薬タンク３０の中空部３４の他端５２の側のみに内部デバイス４６を設置するだけで、推薬３２を排出口４４に導くことができる。   According to the propellant tank 30 of the present invention described above, the propellant tank 30 has a hollow portion 34 inside and has a tapered truncated conical surface 38 symmetrical with respect to the central axis 36, and the end of the truncated conical surface 38. The hemispherical most spherical shell 40 that is liquid-tightly connected to one end 50 having a large cross-sectional area by a plane perpendicular to the central axis 36 of the portion, and the small hemispherical shape that is liquid-tightly connected to the other end 52 of the end portions. Since the hemispherical shell 42 is provided and the small hemispherical shell 42 has the discharge port 44, the entire shape of the propellant tank 30 is tapered from the spherical shell 40 side to the small hemispherical shell 42 side. When the gas accumulated in the hollow portion 34 due to weightlessness becomes the spherical gas reservoir 20, the liquid level on one end 50 side (mostly the spherical shell 40 side) and the other end 52 side (small hemispherical shell 42 side). Since the radii R2 and R1 are different, a difference in surface tension occurs. Thereby, the gas reservoir 20 can be moved to the one end 50 side. Therefore, since the propellant 32 is pushed by the gas reservoir 20 and gathers on the other end 52 side, the propellant 32 can be obtained only by installing the internal device 46 only on the other end 52 side of the hollow portion 34 of the propellant tank 30. Can be led to the outlet 44.

なお本発明は上述した実施の形態に限定されず、本発明の要旨を逸脱しない範囲で種々変更を加え得ることは勿論である。   Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

２ 推薬タンク、４ 推薬、
６ 中空部、１０ 円筒面、
１２ 半球殻、１４ 排出口、
１６ 内部デバイス、
１８ ガス、２０ ガス溜まり、
３０ 推薬タンク、３２ 推薬、
３４ 中空部、３６ 中心軸、
３８ 切頭円錐面、
４０ 大半球殻、４２ 小半球殻、
４４ 排出口、４６ 内部デバイス、
４６ａ デバイス板、４６ｂ デバイス筒、
４８ ガス導入口、
５０ 一端、５２ 他端、
ΔＰ１，ΔＰ２ 圧力、
δ 表面張力、
Ｒ１，Ｒ２ 半径 2 propellant tanks, 4 propellants,
6 hollow part, 10 cylindrical surface,
12 hemispherical shells, 14 outlets,
16 internal devices,
18 gas, 20 gas reservoir,
30 propellant tanks, 32 propellants,
34 hollow part, 36 central axis,
38 frustoconical surface,
40 most spherical shells, 42 small hemispherical shells,
44 outlets, 46 internal devices,
46a device plate, 46b device cylinder,
48 gas inlet,
50 one end, 52 other end,
ΔP1, ΔP2 pressure,
δ surface tension,
R1, R2 radius

Claims (5)

推薬を内部に収納する中空の推薬タンクであって、
内部に中空部を有し中心軸に対し対称なテーパ形状の切頭円錐面と、
前記切頭円錐面の端部のうち前記中心軸に垂直な面による断面積が大きい一端に液密に連結する半球形状の大半球殻と、
前記端部のうちの他端に液密に連結する半球形状の小半球殻と、
小半球殻の前記中心軸上に設けられ推薬を排出する排出口と、を備える、ことを特徴とする推薬タンク。 A hollow propellant tank that contains propellant inside,
A tapered frustoconical surface having a hollow inside and symmetrical with respect to the central axis;
A hemispherical most spherical shell that is liquid-tightly connected to one end having a large cross-sectional area by a plane perpendicular to the central axis among the ends of the truncated conical surface;
A hemispherical small hemispherical shell that is liquid-tightly connected to the other of the ends;
A propellant tank, comprising: a discharge port provided on the central axis of the small hemispherical shell for discharging propellant. 大半球殻又は小半球殻の前記中心軸に平行な面による断面形状は、半円、楕円、もしくはカッシーニ曲線で構成される、ことを特徴とする請求項１に記載の推薬タンク。   2. The propellant tank according to claim 1, wherein a cross-sectional shape of the surface of the most spherical shell or the small hemispherical shell parallel to the central axis is a semicircle, an ellipse, or a Cassini curve. 前記排出口の周辺に設けられ推薬を表面張力により捕捉し前記排出口へ導く内部デバイスを備える、ことを特徴とする請求項１に記載の推薬タンク。   The propellant tank according to claim 1, further comprising an internal device that is provided around the discharge port and captures the propellant by surface tension and guides the propellant to the discharge port. 内部デバイスは、前記中心軸を中心に放射状に広がる複数の板であるデバイス板と、
前記中心軸を中心とする円筒面と該円筒面の両端とに複数の穴を有する中空円筒形の筒であるデバイス筒とを備え、
前記排出口が前記デバイス筒の内部で開口する、ことを特徴とする請求項３に記載の推薬タンク。 The internal device is a device plate that is a plurality of plates extending radially about the central axis;
A device cylinder that is a hollow cylindrical cylinder having a plurality of holes at both ends of the cylindrical surface around the central axis and the cylindrical surface;
The propellant tank according to claim 3, wherein the discharge port is opened inside the device cylinder. 大半球殻の前記中心軸上に設けられ前記内部にガスを導入するガス導入口を備える、ことを特徴とする請求項１に記載の推薬タンク。
2. The propellant tank according to claim 1, further comprising a gas introduction port that is provided on the central axis of the most spherical shell and introduces gas into the interior.
JP2013085511A 2013-04-16 2013-04-16 Propellant tank Pending JP2014205471A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115570A (en) * 2015-07-16 2015-12-02 兰州空间技术物理研究所 Bag-type storage box indication apparatus for microgravity environment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105115570A (en) * 2015-07-16 2015-12-02 兰州空间技术物理研究所 Bag-type storage box indication apparatus for microgravity environment

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