JPH02230971A - Ion engine device - Google Patents
Ion engine deviceInfo
- Publication number
- JPH02230971A JPH02230971A JP4882389A JP4882389A JPH02230971A JP H02230971 A JPH02230971 A JP H02230971A JP 4882389 A JP4882389 A JP 4882389A JP 4882389 A JP4882389 A JP 4882389A JP H02230971 A JPH02230971 A JP H02230971A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- ion
- engine device
- ion engine
- plasma source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産柴上の利用分野〕
この発明は例えば人工衛星が軌道上でその姿勢や軌道を
制御するためのイオンエンジンａｅｖｃ関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application in Sanshiba] The present invention relates to an ion engine AEVC for controlling the attitude and orbit of an artificial satellite on its orbit, for example.
第５図は．例えば「三菱電機技報Ｖｏｌ ， ５ ４
， Ｎｏ，４ １９８０４ に示されたイオンエンジ
ン装置の断面図であシ．図において．（ｌ）はスクリー
ングリッド及び加速グリッドにあけられたイオン抽出孔
．（２）は放電室外筒．｛３｝はこの放電室外筒に取付
けられた上流側磁極板．ｌ４）は放電室外簡のもう一方
の片端に取付けられた下流側磁極板．｛５）はこの下流
側磁極板に取付けられた多孔を有するスクリーングリッ
ド．（６）は上記放電室外筒．上流側磁極板．下流側磁
極板及びスクリーングリッドにより構成された放電室２
（７》は放電室内に設置された筒状の陽極．（８）は放
電室内に推進剤と電子とを同時に供給するホローカソー
ド．（９）は上記スクリーングリッドと同様に多孔を有
し．スクリーングリッドの放電室とは反対側にスクリー
ングリッドと一定の間隔金保ち．各孔の中心をスクリー
ングリッドの各孔の中心と一致するように設置された加
速グリッド，αＧは上流側磁極板と下流側磁極板にはさ
まれた状態で設置され放電室内部に磁場を発生させるた
めの磁場発生器．αυは磁場発生器によ）作られた磁場
．α２は供給器から放電室内へ放出された電子が上記磁
場にとらえられた陽極に飛行する間に電子と同時に放電
室内へ放出された推進剤と衝突することにより形成され
るメインプラズマ．ａ３はスクリーングリッド及び加速
グリッドに電位を印加することにより．スクリーングリ
ッド並びに加速グリッドのイオン抽出孔を通して放電室
外へ射出されたイオンビーム．＋１４１Ｖｉデイセルグ
リッド．αタはスクリーングリッド電源，Ｉ１Ｂは主放
電電源．αηはホローカソード電Ｍ．（Ｉ８はアクセル
グリッド電源を示す。Figure 5 is. For example, “Mitsubishi Electric Technical Report Vol. 5 4
, No. 4, 19804. In the figure. (l) Ion extraction holes drilled in the screen grid and acceleration grid. (2) is the outer cylinder of the discharge chamber. {3} is the upstream magnetic pole plate attached to this discharge chamber outer cylinder. l4) is the downstream magnetic pole plate attached to the other end of the discharge chamber envelope. {5) is a screen grid with holes attached to this downstream magnetic pole plate. (6) is the discharge chamber outer cylinder. Upstream magnetic pole plate. Discharge chamber 2 composed of a downstream magnetic pole plate and a screen grid
(7) is a cylindrical anode installed in the discharge chamber. (8) is a hollow cathode that simultaneously supplies propellant and electrons into the discharge chamber. (9) has porous holes similar to the screen grid above. A constant spacing between the screen grid and the grid is maintained on the opposite side of the grid from the discharge chamber.The acceleration grid is installed so that the center of each hole coincides with the center of each hole of the screen grid, and αG is the upstream magnetic pole plate and the downstream side. A magnetic field generator installed between the magnetic pole plates to generate a magnetic field inside the discharge chamber. αυ is the magnetic field created by the magnetic field generator. α2 is the main plasma that is formed when electrons released from the supply device into the discharge chamber collide with the propellant released into the discharge chamber at the same time as the electrons fly to the anode captured by the magnetic field. a3 by applying a potential to the screen grid and acceleration grid. The ion beam is injected out of the discharge chamber through the ion extraction holes of the screen grid and acceleration grid. +141Vi day cell grid. αta is the screen grid power supply, I1B is the main discharge power supply. αη is the hollow cathode voltage M. (I8 indicates the accelerator grid power supply.
イオンエンジン装置は上記のようＶＣｌｌｌＩ成され，
ホローカソード（８）から放電室（６）へ放出された電
子が磁場ａｎｏ中を陽極（７）へ向けての飛行の過程で
．供給器（８）から放電室（６）内へ放出された推進剤
と衝突することにより．プラズマα２が形成される。こ
のプラズマ状態となった推進剤のうちの正イオンが．加
速グリッド（９）に印加された電位により加速され．イ
オン抽出孔（１）よりイオンビーム０タとして放電室外
へ放出され推力を得るものである。The ion engine device is constructed as VCllllI as described above,
During the process of electrons emitted from the hollow cathode (8) to the discharge chamber (6) in the magnetic field towards the anode (7). By colliding with the propellant released from the feeder (8) into the discharge chamber (6). Plasma α2 is formed. The positive ions of the propellant in this plasma state. It is accelerated by the electric potential applied to the acceleration grid (9). An ion beam is ejected from the ion extraction hole (1) to the outside of the discharge chamber as an ion beam to obtain thrust.
ところで上記の様に構成されたイオンエンジン装置にお
いては次の様な課題があった。すなわちこのイオンエン
ジン装置は電源装置ａ！９〜αａから電力の供給を受け
推力を発生するものであるが．プラズマやイオンビーム
中のイオンが金属表面に衝突することによってたたき出
された金属原子が絶縁材の表面に付着してＰ３縁が破壊
されたシ．一旦付着した金属膜がはがれ落ち．陽極（７
）と放電室外筒（２）間やスクリーングリッド（５）と
加速グリッド（９）間の絶縁が破壊されるという現象が
ある。この現象が発生すると従来のイオンエンジン装置
では絶縁を回復することは難しく．イオンエンジン装置
としての機能を失ってしまう．という課題があった。However, the ion engine device configured as described above has the following problems. In other words, this ion engine device is a power supply device a! It generates thrust by receiving electric power from 9 to αa. A case where the metal atoms ejected by the collision of ions in the plasma or ion beam with the metal surface adhere to the surface of the insulating material and destroy the P3 edge. Once attached, the metal film peels off. Anode (7
) and the discharge chamber outer cylinder (2) and between the screen grid (5) and the acceleration grid (9) are broken down. When this phenomenon occurs, it is difficult to restore insulation with conventional ion engine equipment. It loses its function as an ion engine device. There was a problem.
この発明はかかる課題を解決するためになされたもので
．上記現象が発生した際に絶縁を回復するための機能を
有するイオンエンジン装置を得ることを目的としている
。This invention was made to solve this problem. The object of the present invention is to obtain an ion engine device having a function for restoring insulation when the above phenomenon occurs.
この発明にかかるイオンエンジン装置は絶縁を回復する
ための電力供給手段を持つものである。The ion engine device according to the present invention has a power supply means for restoring insulation.
この発明にかかるイオンエンジン装置においては絶縁を
失った部分に電力を供給し．ジュール加熱で発生した熱
により付着物を蒸発または飛散させることにより絶縁を
回復させ．イオンエンジン装置としての機能を取り戻す
ことができる。In the ion engine device according to the present invention, power is supplied to the part that has lost insulation. The insulation is restored by evaporating or scattering the deposits using the heat generated by Joule heating. It can regain its function as an ion engine device.
第１図はこの発明の特徴をなす電力供給手段を持ったイ
オンエンジン装置の一実施例を示しており．０９〜（至
）が絶縁回復用電力供給回路を示している。（１１はス
クリーングリッド（５）と加速グリッド（９）間．■は
スクリーングリッド（５）とディセルグリッドａａ間．
０ｐは陽極《７》と放電室外筒（２）間．四はホローカ
ソード（９）内．（自）はアクセルグリッド（９）とデ
ィセルグリッド間の絶縁を回復するのに用いられるもの
である。尚．（１５−Ｑηの各電源の右側に示す回路は
従来の電源回路を表している。第２図は絶縁回復用電力
供給回路の１実施例を示して９る。図において． ０４
は入力端子を．（至）は入力側スイッチを．（至）は昇
圧トランスを．＠ぱ逆電流を防止するための逆流防止用
ダイオードを．＠はチャージコンデンサを．翰はプリー
ダ抵抗を．（至）は出力電流を調整するための電流制限
コイルを．Ｇυは出力側スイッチを．０３は出力端子を
示している。Figure 1 shows an embodiment of an ion engine device having a power supply means which is a feature of this invention. 09 to (to) indicate the power supply circuit for insulation recovery. (11 is between the screen grid (5) and the acceleration grid (9). ■ is between the screen grid (5) and the decel grid aa.
0p is between the anode (7) and the discharge chamber outer cylinder (2). 4 is inside the hollow cathode (9). (self) is used to restore the insulation between the accel grid (9) and the decel grid. still. (The circuit shown on the right side of each power supply in 15-Qη represents a conventional power supply circuit. Figure 2 shows an example of a power supply circuit for insulation recovery. In the figure.
is the input terminal. (to) is the input side switch. (To) is a step-up transformer. @Reverse current prevention diode to prevent reverse current. @ stands for a charge capacitor. Kan resists Preeda. (to) is a current limiting coil to adjust the output current. Gυ is the output side switch. 03 indicates an output terminal.
この実施例においては絶縁を失った部分に対応する電源
の絶縁回復用電力供給回路（６９〜（至）のいずれカ）
のチャージコンデンサ（至）にエネルギを蓄え．そのエ
ネルギを回路に供給して付着物を除去することにより絶
縁全回復し．イオンエンジン装置としての機能を取り戻
すことができる。In this embodiment, the insulation recovery power supply circuit (any one from 69 to (to)) of the power supply corresponding to the part where insulation has been lost is used.
Energy is stored in the charge capacitor (to). By supplying that energy to the circuit and removing the deposits, the insulation is fully restored. It can regain its function as an ion engine device.
Ｋ３図はこの発明の特徴であるスイッチ回路と絶縁回復
用電力供給回路を組み合わせた場合の１実施例を示して
９る。図において（至）はスイッチ回路．（ロ）は絶縁
回復用電力供給回路を示しており．（１）〜α樽は第１
図と同様である。この実施例においても絶縁回復用電力
供給回路から供給された電力で付着物を除去する．とい
う機能は同様であるが．電力を供給する回路をスイッチ
回路により選択するために絶縁回復用電力供給回路が１
系統のみで良いという特徴があシ．多くの回路の絶縁破
壊が予想される場合には有利となる。Figure K3 shows an embodiment in which a switch circuit and an insulation recovery power supply circuit, which are features of the present invention, are combined. In the figure, (to) is the switch circuit. (b) shows the power supply circuit for insulation recovery. (1) ~α barrel is the first
It is similar to the figure. In this embodiment as well, deposits are removed using power supplied from the insulation recovery power supply circuit. The function is the same. One insulation recovery power supply circuit is used to select the circuit to which power is supplied by a switch circuit.
It has the characteristic that only the lineage is sufficient. This is advantageous when dielectric breakdown of many circuits is expected.
第４図はこの発明の特徴である保１レベル’ｔ 一時的
に引き上げる回路全付加して絶豫の回復を可能としたイ
オンエンジン装置の１実施例であり．０！ＩＩｆｉ従来
の電源が持っていｆｃｔ流検出回路．＠け必要以上に電
流を流さないために設けられた電流制限抵抗．＠は保護
レベル引き上げスイッチを表している。この実施例にお
いては電流検出回路をバイパスすることによク電流の保
護レベルｔ’ｅｔ流制限抵抗（７）で決められるレベル
まで引き上げることによ〕付着物が除去されるに十分な
レベルの電力の供給を可能として一る。FIG. 4 shows an embodiment of an ion engine device in which a complete recovery is possible by adding a circuit for temporarily raising the maintenance level 't, which is a feature of the present invention. 0! IIfi conventional power supplies have an FCT current detection circuit. A current limiting resistor installed to prevent current from flowing more than necessary. @ represents the protection level increase switch. In this embodiment, by bypassing the current detection circuit and raising the protection level of the current to the level determined by the current limiting resistor (7), the power is at a level sufficient to remove the deposits. It is possible to supply the following items.
この発明においては．以上説明した通り電力供給手段を
付加し．その電力で導電性の付着物を除去することによ
り絶縁金回復することができ．イオンエンジン装置とし
ての機能を取−り戻すことが可能となる．という効果が
ある。尚．実施例については電力供給手段として回路を
示したが．必ずしも回路による必要は無く．例えば太陽
電池パドルの出力を直接供給しても同様の効果が期待で
きる。In this invention. As explained above, a power supply means is added. The electrical power can be used to recover the insulating gold by removing the conductive deposits. It becomes possible to regain the function as an ion engine device. There is an effect. still. In the example, a circuit was shown as a power supply means. It does not necessarily have to be a circuit. For example, a similar effect can be expected by directly supplying the output of a solar array paddle.
第１図はこの発明の特徴をなすイオンエンジン装置の第
１の実施例を示す図．第２図は絶縁回復用電力供給回路
の１実施例を示す図．第３図はこの発明の第２の特徴を
なすイオンエンジン装置の実施例を示す図．第４図はこ
の発明の第３の特徴をなすイオンエンジン装置の実施例
を示す図．第５図は従来のイオンエンジン装置の１例を
示す図であシ．図において（１）はイオン抽出孔．（２
）は放電室外筒．（３）は上流側磁極板．（４）は下流
側磁極板．（５）はスクリーングリッド．（６）は放電
室． （７）Ｉｉ陽極．（８）はホローカソード．（９
）は加速グリッド．ａＧは磁場発生器．αＤは磁場．α
クはメインプラズマ．αｊはイオンビーム． ＋１４１
はデイゼルグリッド．（Ｉ９はスクリーングリッド電源
．０Ｓは主放電電源．ｆｌカはホローカノード電源．α
Ｓはアクセルグリッド電源．αｌ〜圏及びＩ３４Ｆｉ絶
縁回復用電力供給回路．ｅｌ４ｆ′ｉ入力端子．四は入
力側スイッチ．（至）は昇圧トランス．（財）は逆流防
止用ダイオード．＠はチャージコンデ冫サ．（自）はプ
リーダ抵抗．Ｃ３Ｇは電流制限コイル．０１）は出力側
スイッチ．（至）は出力端子．ｃ３３はスイッチ回路．
（ロ）は絶縁回復用電力供給回路．Ｃ３４９は電流検出
回路．Ｏｌ９は電流制限抵抗．０ηは保護レベル引き上
げスイッチである。なお．図中同一符号は同一又は相当
部分を示す。FIG. 1 is a diagram showing a first embodiment of an ion engine device which is a feature of the present invention. Figure 2 is a diagram showing one embodiment of a power supply circuit for insulation recovery. FIG. 3 is a diagram showing an embodiment of the ion engine device which constitutes the second feature of the present invention. FIG. 4 is a diagram showing an embodiment of the ion engine device which constitutes the third feature of the present invention. FIG. 5 is a diagram showing an example of a conventional ion engine device. In the figure (1) is the ion extraction hole. (2
) is the outer cylinder of the discharge chamber. (3) is the upstream magnetic pole plate. (4) is the downstream magnetic pole plate. (5) is a screen grid. (6) is the discharge chamber. (7) Ii anode. (8) is a hollow cathode. (9
) is the acceleration grid. aG is a magnetic field generator. αD is the magnetic field. α
This is the main plasma. αj is the ion beam. +141
is a diesel grid. (I9 is the screen grid power supply. 0S is the main discharge power supply. fl is the hollow canode power supply. α
S is the accelerator grid power supply. αl ~ area and I34Fi insulation recovery power supply circuit. el4f′i input terminal. 4 is the input side switch. (To) is a step-up transformer. (Foundation) is a backflow prevention diode. @ is a charge condenser. (self) is leader resistance. C3G is a current limiting coil. 01) is the output side switch. (to) is the output terminal. c33 is a switch circuit.
(b) is the power supply circuit for insulation recovery. C349 is a current detection circuit. Ol9 is a current limiting resistor. 0η is a protection level raising switch. In addition. The same reference numerals in the figures indicate the same or corresponding parts.
Claims (4)
イオン抽出機構、プラズマ源を取り巻くように取り付け
られた磁場発生器、及び複数の電源系統とを持つイオン
エンジン装置において、電力供給手段を付加し、この電
力供給手段から生ずる電力により、放電等で生成された
導電性の付着物で汚染され、かつ絶縁を失つた放電室周
辺やイオン抽出機構の絶縁を回復させることを特徴とす
るイオンエンジン装置。(1) In an ion engine device that includes a plasma source, an ion extraction mechanism attached to one end of the plasma source, a magnetic field generator attached to surround the plasma source, and multiple power supply systems, a power supply means is added. An ion engine device characterized in that the electric power generated from the electric power supply means restores the insulation around the discharge chamber and the ion extraction mechanism that have been contaminated with conductive deposits generated by discharge etc. and have lost insulation. .
たことを特徴とする特許請求の範囲第（１）項記載のイ
オンエンジン装置。(2) The ion engine device according to claim (1), characterized in that a power supply means is added to part or all of the power supply system.
系統に対して選択スイッチを介して選択供給するように
したことを特徴とする特許請求の範囲第（１）項記載の
イオンエンジン装置。(3) The ion engine according to claim (1), characterized in that one power supply means is provided, and its output is selectively supplied to a plurality of power supply systems via a selection switch. Device.
イオン抽出機構、プラズマ源を取り巻くように取り付け
られた磁場発生器、及び複数の電源系統とを持つイオン
エンジン装置において、一部又は全ての電源系統に対応
する電源にその出力の電力保護レベル、電流保護レベル
の片方又は両方を一時的に引き上げる回路を付加し、付
着物の除去に十分なレベルの電力を絶縁を失つた回路に
供給することにより放電室周辺やイオン抽出機構の絶縁
を回復させることを特徴とするイオンエンジン装置。(4) In an ion engine device that includes a plasma source, an ion extraction mechanism attached to one end of the plasma source, a magnetic field generator attached to surround the plasma source, and multiple power supply systems, some or all of the power supplies Add a circuit to the power supply corresponding to the grid to temporarily raise one or both of the power protection level and current protection level of its output, and supply power at a level sufficient to remove deposits to the circuit that has lost insulation. An ion engine device characterized by restoring insulation around the discharge chamber and the ion extraction mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4882389A JPH02230971A (en) | 1989-03-01 | 1989-03-01 | Ion engine device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4882389A JPH02230971A (en) | 1989-03-01 | 1989-03-01 | Ion engine device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02230971A true JPH02230971A (en) | 1990-09-13 |
Family
ID=12813947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4882389A Pending JPH02230971A (en) | 1989-03-01 | 1989-03-01 | Ion engine device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02230971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799576A1 (en) * | 1999-10-07 | 2001-04-13 | Astrium Gmbh | Radio frequency thruster motor ion source having discharge chamber tapered towards gas inlet end and acceleration grid covering open end with high frequency coil whole zone surrounding. |
| JP2016217171A (en) * | 2015-05-15 | 2016-12-22 | 三菱電機株式会社 | Electric propulsion device |
-
1989
- 1989-03-01 JP JP4882389A patent/JPH02230971A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799576A1 (en) * | 1999-10-07 | 2001-04-13 | Astrium Gmbh | Radio frequency thruster motor ion source having discharge chamber tapered towards gas inlet end and acceleration grid covering open end with high frequency coil whole zone surrounding. |
| JP2001159387A (en) * | 1999-10-07 | 2001-06-12 | Astrium Gmbh | High frequency ion source and method for operating high frequency ion source |
| US6378290B1 (en) | 1999-10-07 | 2002-04-30 | Astrium Gmbh | High-frequency ion source |
| JP2016217171A (en) * | 2015-05-15 | 2016-12-22 | 三菱電機株式会社 | Electric propulsion device |
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