CN105047298A - 1553B bus cable for astronavigation - Google Patents
1553B bus cable for astronavigation Download PDFInfo
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- CN105047298A CN105047298A CN201510321801.2A CN201510321801A CN105047298A CN 105047298 A CN105047298 A CN 105047298A CN 201510321801 A CN201510321801 A CN 201510321801A CN 105047298 A CN105047298 A CN 105047298A
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- bus cable
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- copper alloy
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Abstract
The present invention provides a 1553B bus cable for astronavigation. The 1553B bus cable has a two-core structure, each core has a conductor intertwisted by multiple strands of silver-plated copper alloys, filament silver-plated layer thickness of the silver-plated copper alloys is greater than or equal to 1.5[mu]m, the periphery of each conductor is provided with an insulating layer of a tetrafluoroethylene perfluorinated alkyl vinyl ether copolymer (PFA) material extruded by high-temperature extrusion equipment, filling strips are arranged around the insulating layers, a shielding layer is arranged outside the insulating layers, the filament silver-plated layer thickness is greater than or equal to 1.5[mu]m, the periphery of the shielding layer is provided with a sheath layer of a Fluorinated Ethylene-Propylene (FEP) material extruded by high-temperature extrusion equipment, and the bus cable can resist an extreme low temperature of -90 DEG C. The 1553B bus cable of the present invention has the advantages of small external diameter, light weight, low attenuation, small capacitance, stable impedance, extreme low temperature resistance, radiation resistance, vacuum air escape resistance, low content of harmful gas generated by combustion and escape of insulating and non-metal materials, and capacity of meeting the requirements of signal transmission and control of a 1553B bus network on spacecrafts, space station, and other astronavigation equipment in an astronavigation severe environment.
Description
Technical field
What the present invention proposed is a kind CNDBC-PFA-24S2SJ-75 type aerospace 1553B bus cable, can adapt to meet the 1553B bus network Signal transmissions on spacecraft under aerospace severe rugged environment, space station and other aerospace equipment and control, there is excellent mechanical performance, electrical property and resistance to aerospace environmental performance (resistance to irradiation), Long-Time Service within the scope of-90 ~+200 DEG C.
Background technology
Existing product is for foundation with GJB/773A-2000 " Aero-Space fluoropolymer insulated wire cable ", the single section of specification manufacture that simultaneously have references to American army mark single section of detail specification MIL-C-17/176-0003 and AXON company P512296 product is produced, but the special space environmental performance that this product has lacked general under aerospace environment: as the 1. low temperature of resistance to the limit; 2. high temperature resistant; 3. resistance to irradiation; 4. impedance stabilization, decay little and electric capacity is low; 5. vacuum-resistant ease gas; 6. insulating material smoke density is little with burning generation pernicious gas content; 7. nonmetallic materials pernicious gas escaped quantity is little; 8. the little performance such as lightweight of external diameter.
Summary of the invention
What the present invention proposed is a kind of CNDBC-PFA-24S2SJ-75 type aerospace 1553B bus cable, its object is intended to overcome and the above-mentioned defect had existing for product, and to formulate according to the particular/special requirement of user, also taken into full account the particular/special requirements such as its applicability and reliability and the resistance to irradiation of aerospace environment and material pernicious gas content are little simultaneously.
Technical solution of the present invention: aerospace 1553B bus cable, its structure is cored structure between two, every core has a conductor adopting multiply silver-plated copper alloy stranded, copper alloy monofilament silver coating thickness >=1.5 μm that multiply is silver-plated, it is the insulating barrier adopting high temperature extrusion equipment to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer PFA material in the periphery of conductor, the surrounding employing PTFE of insulating barrier pushes packing, the periphery of insulating barrier is the screen adopting the braiding of silver-plated copper alloy monofilament, monofilament silver coating thickness >=1.5 μm of silver-plated copper alloy, the periphery of screen is the restrictive coating of the perfluoroethylene-propylene material FEP adopting high temperature extrusion equipment to extrude, the bus cable low temperature of resistance to limit the-90 DEG C.
The present invention has the following advantages:
(1) low temperature of resistance to limit the: cable can normal laying installation at-90 DEG C, can solve general material due to low temperature and lay problems such as easily causing sclerosis, embrittlement, thus meet the instructions for use of aerospace low temperature environment.
Long-Time Service within the scope of-90 ~+200 DEG C;
(2) external diameter is little and lightweight: the outside diameter of cable is (3.17 ~ 3.37) mm, maximum weight 24g/m.Reduce to lay space, alleviate the weight of product at spacecraft;
(3) electrical property: under frequency 1MHz condition, characteristic impedance: (70 ~ 84) Ω; Decay≤3.93dB/100m; Electric capacity≤75.45pF/m;
(4) mechanical performance: product tensile strength is large, silver-plated copper alloy conductor tensile strength >=380MPa, silver-plated copper alloy woven shield tensile strength >=320Mpa;
(5) resistance to irradiation: the resistance to irradiation accumulated dose of product reaches as high as 1 × 10
7rad(CO
60gamma-rays irradiates);
(6) vacuum-resistant ease gas: the total mass loss (TML)≤1% of insulating material, can condense volatile matter (CVCM)≤0.1%;
(7) nonmetallic materials pernicious gas effusion: normal atmospheric environment, 101.325kPa, 50 DEG C, 72h, the oder levels that electric wire nonmetallic materials discharge excitant and special odor gas is not more than 1.5 grades; Deviate from carbon monoxide and be not more than 25ug/g; Deviate from total organic matter and be not more than 100 μ g/g;
(8) the shielded type cable loss in weight: the loss in weight is not more than 0.4%;
(9) the toxic gas content detection result that insulating material burning produces meets national requirements.
Accompanying drawing illustrates:
Accompanying drawing 1 is the production technological process of aerospace 1553B bus cable.
Accompanying drawing 2 is structural representations of aerospace 1553B bus cable.
In figure 1 is conductor; 2 is insulating barriers; 3 is packings; 4 is screens; 5 is restrictive coatings.
Embodiment:
Aerospace 1553B bus cable, its structure is two cored structures, every core has a conductor 1 adopting multiply silver-plated copper alloy stranded, copper alloy monofilament silver coating thickness >=1.5 μm that multiply is silver-plated, it is the insulating barrier 2 adopting high temperature extrusion equipment to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer PFA material in the periphery of conductor 1, insulating barrier 2 surrounding adopts PTFE to push packing 3, the periphery of insulating barrier 2 is the screens 4 adopting the braiding of silver-plated copper alloy monofilament, monofilament silver coating thickness >=1.5 μm of silver-plated copper alloy, the periphery of screen 4 adopts high temperature extrusion equipment to extrude perfluoroethylene-propylene material FEP restrictive coating 5, the bus cable low temperature of resistance to limit the-90 DEG C.
Described PFA extrudes insulating barrier 2 and FEP extrudes restrictive coating 5, silver-plated copper alloy monofilament woven shield 4, and high-low temperature resistant reaches-90 DEG C ~ 200 DEG C;
Described insulation is single layer dielectrics, and insulation adopts high temperature extrusion machine thin-walled to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) material;
Described bus cable external diameter is 3.17 ~ 3.37mm, maximum weight 24g/m, reduces to lay space, alleviates the weight of product at spacecraft;
Described bus cable electrical property: under frequency 1MHz condition, characteristic impedance: 70 ~ 84 Ω; Decay≤3.93dB/100m; Electric capacity≤75.45pF/m;
The mechanical performance of described bus cable: product tensile strength is large, silver-plated copper alloy conductor tensile strength >=380MPa, silver-plated copper alloy woven shield tensile strength >=320Mpa;
The resistance to irradiation of described bus cable: the resistance to irradiation accumulated dose of product reaches as high as 1 × 10
7rad(CO
60gamma-rays irradiates).
Below in conjunction with accompanying drawing, further describe technical scheme of the present invention:
Contrast accompanying drawing 1, conductor 1 is stranded conductor, stranded with electric wire bunch of cables winch concentric type; Insulation is single layer dielectrics, and insulation adopts high temperature extrusion machine thin-walled to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) material; Adopt the braiding of silver-plated copper alloy silk, screen adopts braiding machine braiding, and material is silver-plated copper alloy silk; Sheath adopts perfluoroethylene-propylene (FEP) material.
Contrast accompanying drawing 2, aerospace 1553B bus cable, its structure is two cored structures, every core has a conductor 1 adopting multiply silver-plated copper alloy stranded, copper alloy monofilament silver coating thickness >=1.5 μm that multiply is silver-plated, it is the insulating barrier 2 adopting high temperature extrusion equipment to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA) material in the periphery of conductor 1, insulating barrier 2 surrounding adopts PTFE to push packing 3, the periphery of insulating barrier 2 is the screens 4 adopting the braiding of silver-plated copper alloy monofilament, monofilament silver coating thickness >=1.5 μm of silver-plated copper alloy, the periphery of screen 4 adopts high temperature extrusion equipment to extrude perfluoroethylene-propylene material (FEP) restrictive coating 5.
PFA extrudes insulating barrier 2 and FEP extrudes restrictive coating 5, and silver-plated copper alloy monofilament woven shield 4, high-low temperature resistant reaches-90 DEG C ~ 200 DEG C.
Claims (8)
1. aerospace 1553B bus cable, it is characterized in that cored structure between two, every core has a conductor adopting multiply silver-plated copper alloy stranded, copper alloy monofilament silver coating thickness >=1.5 μm that multiply is silver-plated, it is the insulating barrier adopting high temperature extrusion equipment to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer PFA material in the periphery of conductor, the surrounding employing PTFE of insulating barrier pushes packing, the periphery of insulating barrier is the screen adopting the braiding of silver-plated copper alloy monofilament, monofilament silver coating thickness >=1.5 μm of silver-plated copper alloy, the periphery of screen is the restrictive coating of the perfluoroethylene-propylene material FEP adopting high temperature extrusion equipment to extrude, the bus cable low temperature of resistance to limit the-90 DEG C.
2. high-low temperature resistant aerospace 1553B bus cable according to claim 1, is characterized in that described PFA extrudes insulating barrier and FEP extrudes restrictive coating, and silver-plated copper alloy monofilament woven shield, high-low temperature resistant reaches-90 DEG C ~ 200 DEG C.
3. high-low temperature resistant aerospace 1553B bus cable according to claim 1, is characterized in that described conductor is stranded conductor, stranded with electric wire bunch of cables winch concentric type.
4. high-low temperature resistant aerospace 1553B bus cable according to claim 1, is characterized in that described insulation is single layer dielectrics, and insulation adopts high temperature extrusion machine thin-walled to extrude tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer PFA material.
5. high-low temperature resistant aerospace 1553B bus cable according to claim 1, is characterized in that described bus cable external diameter is 3.17 ~ 3.37mm, maximum weight 24g/m, reduces to lay space, alleviates the weight of product at spacecraft.
6. high-low temperature resistant aerospace 1553B bus cable according to claim 5, is characterized in that described bus cable electrical property: under frequency 1MHz condition, characteristic impedance: 70 ~ 84 Ω; Decay≤3.93dB/100m; Electric capacity≤75.45pF/m.
7. high-low temperature resistant aerospace 1553B bus cable according to claim 5, it is characterized in that the mechanical performance of described bus cable: product tensile strength is large, silver-plated copper alloy conductor tensile strength >=380MPa, silver-plated copper alloy woven shield tensile strength >=320MPa.
8. high-low temperature resistant aerospace 1553B bus cable according to claim 5, is characterized in that the resistance to irradiation of described bus cable: the resistance to irradiation accumulated dose of product reaches as high as 1 × 10
7rad(CO
60gamma-rays irradiates).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321801.2A CN105047298A (en) | 2015-06-12 | 2015-06-12 | 1553B bus cable for astronavigation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321801.2A CN105047298A (en) | 2015-06-12 | 2015-06-12 | 1553B bus cable for astronavigation |
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| Publication Number | Publication Date |
|---|---|
| CN105047298A true CN105047298A (en) | 2015-11-11 |
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ID=54453772
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510321801.2A Pending CN105047298A (en) | 2015-06-12 | 2015-06-12 | 1553B bus cable for astronavigation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111489860A (en) * | 2020-04-26 | 2020-08-04 | 南京全信传输科技股份有限公司 | Nuclear-electromagnetic-resistant multi-core pulse direct current cable |
| CN113421703A (en) * | 2021-07-30 | 2021-09-21 | 湖北联上化工科技有限公司 | High-low temperature resistant aviation wire harness material and preparation method thereof |
| CN116866250A (en) * | 2023-09-05 | 2023-10-10 | 空间液态金属科技发展(江苏)有限公司 | Local area network data storm suppression method based on spacecraft application |
| CN116886532A (en) * | 2023-09-07 | 2023-10-13 | 空间液态金属科技发展(江苏)有限公司 | Adaptive configuration method for network configuration information of aerospace Ethernet switch |
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| CN202771829U (en) * | 2011-05-18 | 2013-03-06 | 日立电线精密技术株式会社 | A cable used for differential signal transmission and wire beam utilizing the cable |
| CN204651082U (en) * | 2015-06-12 | 2015-09-16 | 南京全信传输科技股份有限公司 | Aerospace 1553B bus cable |
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2015
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| CN201281982Y (en) * | 2008-10-20 | 2009-07-29 | 南京全信传输科技股份有限公司 | Data bus cable |
| JP2010244931A (en) * | 2009-04-08 | 2010-10-28 | Junkosha Co Ltd | High-speed differential cable |
| CN201796637U (en) * | 2010-09-28 | 2011-04-13 | 淮南新光神光纤线缆有限公司 | Cable for data bus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111489860A (en) * | 2020-04-26 | 2020-08-04 | 南京全信传输科技股份有限公司 | Nuclear-electromagnetic-resistant multi-core pulse direct current cable |
| CN113421703A (en) * | 2021-07-30 | 2021-09-21 | 湖北联上化工科技有限公司 | High-low temperature resistant aviation wire harness material and preparation method thereof |
| CN116866250A (en) * | 2023-09-05 | 2023-10-10 | 空间液态金属科技发展(江苏)有限公司 | Local area network data storm suppression method based on spacecraft application |
| CN116866250B (en) * | 2023-09-05 | 2023-11-14 | 空间液态金属科技发展(江苏)有限公司 | Local area network data storm suppression method based on spacecraft application |
| CN116886532A (en) * | 2023-09-07 | 2023-10-13 | 空间液态金属科技发展(江苏)有限公司 | Adaptive configuration method for network configuration information of aerospace Ethernet switch |
| CN116886532B (en) * | 2023-09-07 | 2023-11-10 | 空间液态金属科技发展(江苏)有限公司 | Adaptive configuration method for network configuration information of aerospace Ethernet switch |
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Application publication date: 20151111 |