FR2278661A1 - Cellular foam filling to surround rocket propulsion charge - is polymerised in situ and sticks to the propellant - Google Patents
Cellular foam filling to surround rocket propulsion charge - is polymerised in situ and sticks to the propellantInfo
- Publication number
- FR2278661A1 FR2278661A1 FR7346827A FR7346827A FR2278661A1 FR 2278661 A1 FR2278661 A1 FR 2278661A1 FR 7346827 A FR7346827 A FR 7346827A FR 7346827 A FR7346827 A FR 7346827A FR 2278661 A1 FR2278661 A1 FR 2278661A1
- Authority
- FR
- France
- Prior art keywords
- propellant
- foam
- sticks
- situ
- elements
- 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.)
- Granted
Links
- 239000003380 propellant Substances 0.000 title abstract 8
- 239000006260 foam Substances 0.000 title abstract 5
- 230000001413 cellular effect Effects 0.000 title abstract 2
- 238000011065 in-situ storage Methods 0.000 title abstract 2
- 238000002485 combustion reaction Methods 0.000 abstract 4
- 244000024675 Eruca sativa Species 0.000 abstract 2
- 235000015842 Hesperis Nutrition 0.000 abstract 1
- 235000012633 Iberis amara Nutrition 0.000 abstract 1
- 229920005830 Polyurethane Foam Polymers 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011496 polyurethane foam Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000003860 storage Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/12—Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/36—Propellant charge supports
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The combustion chamber of a propulsion system, e.g. rocket, contains one or more elements of the propellant which is coated, at least partially, by a compressible cellular foam which is compatible with and sticks to the surface of the propellant. This foam which fills the space between the propellant elements and the inner wall of the combustion chamber is pref. a rigid polyurethane foam of density >2. In rockets where the propellant is in the form of several elements fixed in a bed-plate the foam filling supports the elements over a 1/4 to 2/3 of their lengths. The filling is installed by injecting a mixture of the liquids which react and polymerise at a temp. less than that at which the propellant begins to deteriorate, at two points equidistant from the axis of the combustion chamber, so that the foam forms 'in situ'. Used in combustion chambers of propellant systems, e.g. rockets, and protects the propellant charge against damage during storage, transportation and initial shock when the rocket is ignited. It is installed at temps. which cause no deterioration of the charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7346827A FR2278661A1 (en) | 1973-12-28 | 1973-12-28 | Cellular foam filling to surround rocket propulsion charge - is polymerised in situ and sticks to the propellant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7346827A FR2278661A1 (en) | 1973-12-28 | 1973-12-28 | Cellular foam filling to surround rocket propulsion charge - is polymerised in situ and sticks to the propellant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2278661A1 true FR2278661A1 (en) | 1976-02-13 |
| FR2278661B1 FR2278661B1 (en) | 1976-11-19 |
Family
ID=9129891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7346827A Granted FR2278661A1 (en) | 1973-12-28 | 1973-12-28 | Cellular foam filling to surround rocket propulsion charge - is polymerised in situ and sticks to the propellant |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2278661A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2499977A1 (en) * | 1981-02-18 | 1982-08-20 | Messerschmitt Boelkow Blohm | INSULATING LAYER FOR PROPULSIVE LOADS |
| WO1985001319A1 (en) * | 1983-09-16 | 1985-03-28 | The Secretary Of State For Defence In Her Britanni | Rocket with different charges |
| FR2566461A1 (en) * | 1984-06-26 | 1985-12-27 | Messerschmitt Boelkow Blohm | METHOD FOR FIXING THE PROPULSIVE FUEL WITH FRONT COMBUSTION OF A SOLID PROPERGOL FUSED PROPELLER |
| EP0686135A1 (en) * | 1993-02-24 | 1995-12-13 | Thiokol Corporation | Bore mitigants for solid propellant rocket motors |
| CN119308775A (en) * | 2024-12-17 | 2025-01-14 | 上海航天设备制造总厂有限公司 | A load-bearing/insulating integrated insulation structure for a common bottom of a low-temperature storage tank and its forming method and application |
-
1973
- 1973-12-28 FR FR7346827A patent/FR2278661A1/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2499977A1 (en) * | 1981-02-18 | 1982-08-20 | Messerschmitt Boelkow Blohm | INSULATING LAYER FOR PROPULSIVE LOADS |
| WO1985001319A1 (en) * | 1983-09-16 | 1985-03-28 | The Secretary Of State For Defence In Her Britanni | Rocket with different charges |
| EP0142247A1 (en) * | 1983-09-16 | 1985-05-22 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Rocket motor with two different charges |
| FR2566461A1 (en) * | 1984-06-26 | 1985-12-27 | Messerschmitt Boelkow Blohm | METHOD FOR FIXING THE PROPULSIVE FUEL WITH FRONT COMBUSTION OF A SOLID PROPERGOL FUSED PROPELLER |
| EP0686135A1 (en) * | 1993-02-24 | 1995-12-13 | Thiokol Corporation | Bore mitigants for solid propellant rocket motors |
| EP0686135A4 (en) * | 1993-02-24 | 1996-03-13 | Thiokol Corp | Bore mitigants for solid propellant rocket motors |
| CN119308775A (en) * | 2024-12-17 | 2025-01-14 | 上海航天设备制造总厂有限公司 | A load-bearing/insulating integrated insulation structure for a common bottom of a low-temperature storage tank and its forming method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2278661B1 (en) | 1976-11-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CL | Concession to grant licenses | ||
| ST | Notification of lapse |