EP4448967A1 - Utilisation d'un nouveau type d'ergol pour la propulsion electrique - Google Patents
Utilisation d'un nouveau type d'ergol pour la propulsion electriqueInfo
- Publication number
- EP4448967A1 EP4448967A1 EP22850726.5A EP22850726A EP4448967A1 EP 4448967 A1 EP4448967 A1 EP 4448967A1 EP 22850726 A EP22850726 A EP 22850726A EP 4448967 A1 EP4448967 A1 EP 4448967A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propellant
- electric
- propulsion
- electric propulsion
- thrusters
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03H1/00—Using plasma to produce a reactive propulsive thrust
- F03H1/0006—Details applicable to different types of plasma thrusters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/30—Materials not provided for elsewhere for aerosols
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G43/00—Compounds of uranium
- C01G43/04—Halides of uranium
- C01G43/06—Fluorides
- C01G43/063—Hexafluoride (UF6)
Definitions
- the invention relates to the use of a new type of propellant for electric propulsion and, in particular, space electric propulsion.
- propulsion is based on the exchange of momentum between an ejected material and the propulsion device, the ejected material being able to consist of:
- Electric propulsion also called plasma propulsion or ion propulsion, makes it possible, thanks to a separation between the energy source and the material to be ejected, to reach a high ejection speed, which thus induces a very high propellant consumption. weak, unlike chemical propulsion.
- electric propulsion is used in the space field and, more specifically, in the propulsion of satellites, it is thus possible to reduce the mass of the propelled satellites and, thus their cost of launch or, moreover, to lengthen the duration of a mission and increase its impact.
- electric propulsion allows gains in capacity and costs and allows the performance of maneuvers and missions that would otherwise be difficult to achieve.
- electric propulsion is provided mainly and operationally by two technologies relatively similar: electric thrusters with grids and Hall effect thrusters, these two technologies differing in the way of generating the electric field at the origin of the ion ejection, the electric field being generated thanks to two polarized grids for the electric thrusters grids and being generated by the combination of a magnetic field and an electrostatic potential difference between an anode and a cathode for Hall effect electric thrusters.
- - rare gases such as xenon used mainly or krypton or argon;
- - solid propellants such as iodine, magnesium or zinc.
- Electric propulsion can also be provided, to date but still at the prototype stage, by thrusters known as “electronegative thrusters” consisting of using both positive ions and negative ions for thrust, which conventionally requires the management of two propellants, a propellant capable of generating positive ions (for example, argon) and a propellant capable of generating negative ions (for example, sulfur hexafluoride) under a similar pressure, the use of two types of propellant, however, resulting in excess weight that is detrimental to propulsion performance.
- electronegative thrusters consisting of using both positive ions and negative ions for thrust, which conventionally requires the management of two propellants, a propellant capable of generating positive ions (for example, argon) and a propellant capable of generating negative ions (for example, sulfur hexafluoride) under a similar pressure, the use of two types of propellant, however, resulting in excess weight that is detrimental to propulsion performance.
- the invention relates to the use of depleted uranium hexafluoride UFe, as propellant in an electric thruster and, more particularly, in an electric space thruster.
- propellant corresponds to the notion known by the English terminology “propellent” which can also be designated by propellant gas.
- depleted uranium hexafluoride corresponds to uranium hexafluoride whose uranium has an isotopic composition comprising a low abundance of light isotopes, and, more specifically between 0.2 and 0.4% of 235 U, depleted uranium hexafluoride originating, in particular, from spent fuel reprocessing channels.
- depleted uranium hexafluoride being in particular available via the discharge from isotopic separation plants of fluorinated natural uranium (eg George Besse 2 (GBII) depleted uranium);
- uranium hexafluoride is capable of producing both positive ions (in this case, UFs + ) and negative ions (in this case, Fj during the ionization process;
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma Technology (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2113809A FR3130903A1 (fr) | 2021-12-17 | 2021-12-17 | Utilisation de l’hexafluorure d’uranium comme ergol pour la propulsion electrique |
| PCT/FR2022/052397 WO2023111482A1 (fr) | 2021-12-17 | 2022-12-16 | Utilisation d'un nouveau type d'ergol pour la propulsion electrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4448967A1 true EP4448967A1 (fr) | 2024-10-23 |
Family
ID=81449147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22850726.5A Pending EP4448967A1 (fr) | 2021-12-17 | 2022-12-16 | Utilisation d'un nouveau type d'ergol pour la propulsion electrique |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250034444A1 (fr) |
| EP (1) | EP4448967A1 (fr) |
| JP (1) | JP2024547017A (fr) |
| CN (1) | CN118401752A (fr) |
| FR (1) | FR3130903A1 (fr) |
| WO (1) | WO2023111482A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3149647A1 (fr) * | 2023-06-09 | 2024-12-13 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Utilisation d’un nouveau type d’ergol pour la propulsion électrique |
-
2021
- 2021-12-17 FR FR2113809A patent/FR3130903A1/fr active Pending
-
2022
- 2022-12-16 EP EP22850726.5A patent/EP4448967A1/fr active Pending
- 2022-12-16 JP JP2024536308A patent/JP2024547017A/ja active Pending
- 2022-12-16 WO PCT/FR2022/052397 patent/WO2023111482A1/fr not_active Ceased
- 2022-12-16 US US18/718,964 patent/US20250034444A1/en active Pending
- 2022-12-16 CN CN202280083206.8A patent/CN118401752A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023111482A1 (fr) | 2023-06-22 |
| US20250034444A1 (en) | 2025-01-30 |
| CN118401752A (zh) | 2024-07-26 |
| JP2024547017A (ja) | 2024-12-26 |
| FR3130903A1 (fr) | 2023-06-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240701 |
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| AK | Designated contracting states |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIESALTERNATIVES |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |