Surface Coatings
| Coating涂层 | α (BOL→EOL) | ε | α/ε (BOL) | Behaviour in sun受晒特性 |
|---|
| White paint (Z93/S13G)白漆（Z93/S13G） | 0.15→0.35 | 0.90 | 0.17 | Cold; UV-degrades偏冷；紫外退化 |
| OSR / SSM | 0.08→0.15 | 0.80 | 0.10 | Coldest, stable — radiators最冷且稳定——散热面首选 |
| Black paint (Z306)黑漆（Z306） | 0.95 | 0.87 | 1.09 | Neutral; internal surfaces近中性；多用于舱内 |
| Aluminized kapton (kapton out)镀铝聚酰亚胺（膜朝外） | 0.38→0.45 | 0.67 | 0.57 | MLI outer layerMLI 外层常用 |
| Bare aluminum (VDA)裸铝（镀铝面） | 0.12 | 0.04 | 3.0 | Hot in sun; low-e shields受晒很热；用作低发射屏 |
| Anodized aluminum阳极氧化铝 | 0.25–0.45 | 0.80 | ~0.4 | Structure default结构默认表面 |
| Solar cell (covered)太阳电池（含盖片） | 0.75–0.85 | 0.82 | ~1.0 | Arrays run 50–90 °C帆板在轨 50–90 °C |
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Structural Materials
| Material材料 | k (W/m·K) | c_p (J/kg·K) | ρ (kg/m³) |
|---|
| Copper铜 | 390 | 385 | 8960 |
| Al 6061 | 167 | 896 | 2700 |
| Al 7075 | 130 | 960 | 2810 |
| Stainless steel 304不锈钢 304 | 16 | 500 | 7900 |
| Ti-6Al-4V | 7 | 520 | 4430 |
| CFRP (in-plane, typical)碳纤维板（面内典型） | 5–50 | 800 | 1600 |
| GFRP | 0.5 | 1000 | 1900 |
| PEEK | 0.25 | 1340 | 1300 |
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Typical Component Temperature Limits
| Component部件 | Operating工作 | Survival存储/生存 |
|---|
| Li-ion battery锂离子蓄电池 | +10…+30 °C | 0…+40 °C |
| Electronics (typical)电子设备（典型） | −20…+50 °C | −40…+60 °C |
| Star tracker / IMU星敏 / 惯组 | 0…+40 °C | −20…+50 °C |
| Optical payload光学载荷 | +20 ± 3 °C | −30…+50 °C |
| Hydrazine propellant肼类推进剂 | +7…+40 °C | > +7 °C |
| Solar array太阳帆板 | −100…+110 °C | −150…+120 °C |
| Antenna / structure天线 / 结构 | −150…+120 °C | −170…+130 °C |
Program-specific — always use the unit ICDs; these are early-design placeholders. Batteries and optics usually drive the design.具体以单机接口文件为准——此处为方案阶段占位值。通常由蓄电池与光学载荷主导设计。
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Environment Constants
| Constant常数 | Value数值 |
|---|
| Stefan–Boltzmann σ斯特藩–玻尔兹曼常数 σ | 5.670 × 10⁻⁸ W/(m²·K⁴) |
| Solar constant (min/mean/max)太阳常数（最小/平均/最大） | 1322 / 1361 / 1414 W/m² |
| Earth albedo地球反照率 | 0.30 ± 0.05 |
| Earth IR emission地球红外辐射 | 237 (218–258) W/m² |
| Earth equivalent blackbody地球等效黑体温度 | 255 K |
| Deep space sink深空热沉 | ≈ 3 K |
📖 How to use
- The design tools reference these values — override with vendor/measured data as the design matures.各设计工具引用本页数值——随设计深入应以厂商/实测数据覆盖。
- Use EOL α for hot cases (coatings darken with UV/AO exposure); ε is essentially stable.热工况用寿命末期 α（涂层受紫外/原子氧退化变深）；ε 基本稳定。