一、评价依据
This ranking follows the CPPPS proprietary evaluation-algorithm specification: it does not directly reproduce the positions of public lists such as ShanghaiRanking, CCID, Forbes, Hurun, the Fortune 500, or the World Brand Lab, but computes rankings independently from underlying public data. Aerospace-industry evaluation involves three special issues, to which this model responds one by one:
本排名遵循 CPPPS 自有评价算法规范：不直接转载软科、赛迪、福布斯、胡润、财富 500 强、世界品牌实验室等公开榜单的名次，而以底层公开数据自算排名。航空航天行业评价存在三个特殊问题，本模型逐一回应：
- 集团与上市公司并存、口径不一：行业存在大型军工集团（多数未整体上市）与其下属上市公司两类主体。模型将二者并列评价，规模、创新与贡献体现集团集成能力，质量维度对未上市集团以公开估值近似替代市值，并在"局限性"中显式说明口径差异。
- 创新是命脉而非点缀：航空航天产品研制周期长、技术门槛高，研发投入与专利积累直接决定自主可控能力。故创新维度同时纳入研发投入（资金）与专利数（产出），权重 25%。
- 贡献维度不可缺席：航空航天企业的本质贡献是"自主可控"——国产大飞机、航空发动机、载人航天、北斗导航、国防安全等关键领域的自主突破。国际主流企业榜单普遍缺失该维度，CPPPS 将其作为特色维度单列，权重 25%。
二、数学模型
The six underlying indicators are first standardized, then aggregated into four dimensions, and finally weighted and summed to obtain a composite score:
六项底层指标先标准化，再聚合成四个维度，最后加权求和得到综合分：
For the four wide-ranging indicators—operating revenue, market capitalization, R&D investment, and patent count—the logarithm log₁₀(1+x) is taken before normalization to compress the numerical monopoly of leading groups, so that second-tier enterprises can also obtain meaningful scores; net profit contains negative values and is directly min-max standardized; the self-reliance contribution score is a 0–100 rating, min-max standardized.
对营业收入、市值、研发投入、专利数四类大跨度指标，先取对数 log₁₀(1+x) 再归一化，压缩头部集团的数值垄断，使次头部企业也能获得有意义的得分；净利润含负值，直接采用最小-最大标准化；自主可控分为 0–100 评分，最小-最大标准化。
The four weights sum to 1, so the composite score falls within the 0–100 range. The Contribution dimension weight (0.25) equals that of Innovation (0.25) and is higher than Quality (0.20), reflecting the industry essence of aerospace that "national strategic attributes take precedence over commercial profitability"—the value of self-reliance breakthroughs outweighs short-term profit fluctuations.
四项权重合计为 1，综合分落在 0–100 区间。贡献维度权重（0.25）与创新（0.25）持平且高于质量（0.20），体现航空航天"国家战略属性优先于商业盈利"的行业本质——自主可控的突破价值，高于短期的盈利波动。
三、指标与权重依据
| 指标 | 方向 | 权重 | 所属维度 | 依据 |
|---|
| 营业收入 | 对数 | 规模 1.00 | 规模 | 货币规模与行业地位；跨企业统一口径 |
| 净利润 | 正向 | 质量 0.50 | 质量 | 真实盈利质量，区分"规模"与"效益" |
| 市值/估值 | 对数 | 质量 0.50 | 质量 | 资本市场/估值对企业价值的定价 |
| 研发投入 | 对数 | 创新 0.50 | 创新 | 技术迭代的硬投入 |
| 专利数 | 对数 | 创新 0.50 | 创新 | 技术积累的硬产出 |
| 自主可控贡献分 | 正向 | 贡献 1.00 | 贡献 | 国产大飞机/发动机/航天工程突破，CPPPS 特色维度 |
The logic behind the four-dimensional weights (Scale 0.30, Quality 0.20, Innovation 0.25, Contribution 0.25): Scale is the cornerstone of evaluation and carries the highest weight; Innovation and Contribution are equally weighted and higher than Quality, reflecting the industry attribute that aerospace "technological autonomy + national strategy" takes precedence over short-term commercial profitability.
四维权重（规模 0.30、质量 0.20、创新 0.25、贡献 0.25）的设定逻辑：规模是评价基石，权重最高；创新与贡献并重且高于质量，反映航空航天"技术自主 + 国家战略"优先于短期商业盈利的行业属性。
四、自主可控贡献分的赋值方法
The self-reliance contribution score (0–100) is a CPPPS distinctive dimension, assigned qualitatively according to an enterprise's degree of contribution to the self-reliance of key national equipment, with reference to public engineering achievements and strategic positioning:
自主可控贡献分（0–100）是 CPPPS 特色维度，按企业在国家关键装备自主化中的贡献程度定性赋值，参考公开工程成果与战略定位：
- 国产大飞机整机（C919/ARJ21/C929 研制与适航取证）：贡献最高档；
- 载人航天、空间站、北斗、深空探测等国家重大航天工程主承制单位：贡献次高档；
- 航空发动机（涡扇/大涵道比发动机自主研制）：贡献高档；
- 先进军机（歼击机、运输机、直升机）与导弹/防空装备主承制单位：贡献中高档；
- 关键分系统与核心元器件（机载系统、连接器、锻件、卫星制造、北斗应用）：按自主替代程度赋中档分值。
This score is an approximation based on public knowledge and qualitative expert assignment, used to highlight the strategic contribution of "self-reliance and controllability", which is difficult to monetize; where the specific score differs from official sources, official sources shall prevail.
该分值为公开知识近似、专家定性赋值，用于突出"自主可控"这一难以货币化的战略贡献；具体分值与官方口径如有出入，以官方为准。
五、数据来源与局限性
Operating revenue, net profit, R&D investment, and patent counts come from the annual reports of listed companies, corporate social responsibility reports, and public statistics; market capitalization is the public market value for listed companies and an approximate public valuation for unlisted groups; the self-reliance contribution score is a qualitative assignment. All values are approximate values from public knowledge, marked "subject to official sources". The main limitations of this model: ① groups are evaluated side-by-side with their subordinate listed companies, creating business overlap and differences in statistical caliber; ② unlisted groups lack a true market capitalization, which is approximated by valuation; ③ market capitalization is affected by secondary-market fluctuations, so the same enterprise's score may change at different points in time; ④ net profit is sensitive to military pricing and delivery rhythm, and some enterprises (such as whole-aircraft makers still in the investment phase) have negative profits and thus lower Quality-dimension scores; ⑤ the self-reliance contribution score is a qualitative assignment whose subjective component readers should be aware of. These limitations are all explicitly marked under the principle of "open data sources and open algorithms" for readers to calibrate.
营业收入、净利润、研发投入、专利数来自各上市公司年度报告、企业社会责任报告及公开统计；市值为上市公司公开市值、未上市集团为公开估值近似；自主可控贡献分为定性赋值。所有数值均为公开知识近似值，标注"以官方为准"。本模型的主要局限：①集团与下属上市公司并列评价，存在业务重叠与统计口径差异；②未上市集团缺乏真实市值，以估值近似替代；③市值受二级市场波动影响，同一企业不同时点得分可能变动；④净利润对军工定价与交付节奏敏感，部分企业（如尚处投入期的大飞机整机）盈利为负，质量维度得分偏低；⑤自主可控贡献分为定性赋值，主观成分需读者知悉。上述局限均在"数据源公开、算法公开"原则下显式标注，供读者校准。
六、参考文献
- 各上市公司年度报告、定期财务报告与社会责任报告。
- 国务院国资委：中央企业经济运行与改革发展公开信息。
- 中国商飞、中国航空工业集团、中国航天科技集团、中国航天科工集团、中国航空发动机集团：公开新闻与工程成果发布。
- 中国航空运输协会、中国民用航空局：适航审定与机队运营公开数据。
- 国家航天局（CNSA）：载人航天、探月、探火、北斗等工程公开信息。
- 国家知识产权局：企业专利公开检索数据。
- 国际航空运输协会（IATA）、波音/空客公开市场报告：用于行业背景对照。