Solid rocket propellant with blended triazole plasticzer
US-2018273439-A1 · Sep 27, 2018 · US
Rocket engine
US12473875B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12473875-B2 |
| Application number | US-202318180368-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2023 |
| Priority date | Sep 8, 2020 |
| Publication date | Nov 18, 2025 |
| Grant date | Nov 18, 2025 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A rocket engine comprises a combustion chamber and a rocket nozzle that communicates with the combustion chamber. A metal wire supply device supplies a metal wire, which is fuel, to the combustion chamber. A water vapor generator supplies water vapor as an oxidant to the combustion chamber. An ignition device ignites the metal wire in a water vapor atmosphere.
First claim
Opening claim text (preview).
What is claimed is: 1 . A rocket engine comprising: a combustion chamber; a metal wire supply device structured to supply a solid metal wire which is fuel to the combustion chamber; a water vapor generator structured to supply water vapor which is oxidant to the combustion chamber; an ignition device structured to ignite the metal wire; and a rocket nozzle structured to communicate with the combustion chamber, wherein the ignition device comprises: an electrode disposed to face a tip portion of the metal wire; and a high-voltage generation circuit structured to apply a high voltage between the metal wire and the electrode. 2 . The rocket engine according to claim 1 , wherein the metal wire is any one of magnesium, a magnesium alloy, aluminum, and an aluminum alloy. 3 . The rocket engine according to claim 1 , further comprising: a regenerative cooling channel formed in a wall surface of at least one of the rocket nozzle and the combustion chamber, wherein the water vapor or source liquid water thereof is supplied to the combustion chamber via the regenerative cooling channel. 4 . The rocket engine according to claim 1 , wherein the water vapor generator comprises: a heater provided in the combustion chamber; and a water supply unit structured to supply water droplets to the heater. 5 . The rocket engine according to claim 1 , wherein the water vapor generator reuses heat generated in the combustion chamber to generate water vapor. 6 . The rocket engine according to claim 1 , wherein the metal wire supply device accommodates the metal wire in a state of being wound around a reel. 7 . The rocket engine according to claim 1 , further comprising: a sealing mechanism provided in an insertion portion of the combustion chamber in which the metal wire is inserted. 8 . The rocket engine according to claim 1 , wherein a wire diameter of the metal wire is 0.05 to 5 mm.
Assignees
Inventors
Classifications
characterised by starting or ignition means or arrangements (safety devices F02K9/38) · CPC title
Aluminium alloys, e.g. AlCuMgPb · CPC title
Magnesium · CPC title
Aluminium · CPC title
- F02K9/10Primary
Shape or structure of solid propellant charges · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12473875B2 cover?
- A rocket engine comprises a combustion chamber and a rocket nozzle that communicates with the combustion chamber. A metal wire supply device supplies a metal wire, which is fuel, to the combustion chamber. A water vapor generator supplies water vapor as an oxidant to the combustion chamber. An ignition device ignites the metal wire in a water vapor atmosphere.
- Who is the assignee on this patent?
- Univ Tokyo
- What technology area does this patent fall under?
- Primary CPC classification F02K9/10. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 18 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).