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萨维尼奥同时登上溢价榜和捡漏榜：曼城2150镑买下，8500万镑出售_我的网站

A |     8月26日讯 在热刺以总价8500万英镑的价格引进萨维尼奥后，《The Athletic》谈到了如今英超转会中价值的构成要素。    

    The general assembly of the Lixun-1 upper stage Photo: Courtesy of CAS Space
    The Lixun-1 upper stage Photo: Courtesy of CAS Space
Lixun-1 upper stage, a versatile "space tug" developed by China's commercial space firm CAS Space, is scheduled to make its maiden flight in the first quarter of 2027 after completing a series of key propulsion-system tests, the developer and its chief designer told the Global Times on Tuesday.
The "tug" is designed to ferry satellites from one orbit to another and support missions ranging from constellation deployment to lunar exploration. 
While the main stages of a rocket carry payloads from the ground into an initial orbit, an upper stage takes over once the craft is in space. By repeatedly restarting its engine and changing orbit, Lixun-1 can deliver satellites to higher or different orbits, distribute multiple spacecraft to separate destinations during a single launch, or send probes onto trajectories toward the moon and beyond, Global Times learned from the developer.
Yang Haoliang, chief designer of the Lixun-1 upper stage, compared the system to a shuttle service. "If the regular stages of a launch vehicle are like a long-distance bus," - they carry the upper stage and satellites from Earth to a near-Earth parking orbit - the upper stage then takes over as a "space tug," carrying its satellite "passengers" onward to their designated orbital "stops," Yang explained. 
That capability can have a direct impact on how efficiently satellites are launched and operated, Yang said. If a satellite has to climb from an initial orbit to its final destination using its own engine, the process can consume a considerable amount of onboard propellant and reduce the fuel available during its operational life. An upper stage can instead perform that orbital transfer, helping conserve satellite fuel and potentially extend its service life.
It can also make one rocket launch do more work. Instead of releasing a batch of satellites into roughly the same orbit, Lixun-1 can repeatedly ignite its engine and maneuver between deployments, sending different satellites to different altitudes and inclinations. Yang said this would help accelerate constellation deployment while improving the efficiency of individual launches.
The practical ambitions behind the system are backed by a major technical milestone reached this month. In August, Lixun-1 completed its PV-001 integrated propulsion-system coordination firing test, during which the entire system operated smoothly for 566 seconds.  
Yang told the Global Times that the current Lixun-1 upper stage has a thrust of 20 kilonewtons and can achieve a specific impulse of 315 seconds, which he described as reaching an internationally leading level. The August firing covered the planned profile for the maiden mission, an important step before the system proceeds to flight testing.
The test was more than a demonstration of the engine itself. As an important system-level verification during development, it examined the coordination and engineering reliability of the engine pressurization system, propellant delivery system, propellant management system and servo-control system under the fully integrated configuration.
Of a series of tests that accumulated 5,211 seconds of firing time, the latest one focused on three core technologies: a high-thrust, high-performance 20-kilonewton upper-stage engine capable of multiple starts; balanced propellant delivery from multiple parallel tanks; and a highly reliable integrated electrical system. Their successful verification means Lixun-1 has completed its system-level testing and is ready to move into the flight-test phase, according to the developer.
Lixun-1 has been designed as a modular and generally adaptable upper stage rather than a system tied to only one rocket. It is intended to work with CAS Space's Kinetica-2 and Kinetica-2 heavy-lift variants as well as other launch vehicles, Yang said.
When paired with the Kinetica-2 family, Lixun-1 could significantly expand the rocket's mission range. For communications missions, it could deliver satellites to geosynchronous transfer orbit or even directly to geosynchronous orbit, conserving satellite propellant while supporting the deployment of high-throughput satellites and future 6G communications spacecraft.
For multi-satellite missions, the combination could distribute spacecraft to different orbital altitudes and inclinations during a single launch, potentially serving both low-Earth-orbit constellations and medium- or high-orbit payloads. For deep-space missions, it could place probes onto Earth-moon transfer trajectories and support lunar exploration, Yang said.
The upper stage is designed to be able to conduct more than 20 engine ignitions, autonomously plan orbital-transfer routes and operate under the vacuum and extreme temperature conditions of space. After completing payload deployment, it can also carry out orbital disposal maneuvers to reduce space-debris risks.
Yang said the Lixun-1 and Kinetica-2 combination is designed to cover the vast majority of commercial satellite launch requirements while retaining the ability to participate in major national space projects. More broadly, the upper stage forms part of CAS Space's effort to build launch capabilities reaching medium and high Earth orbits and deep space, extending the reach of China's commercial space sector toward higher orbits and more distant destinations.
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B | 巴西天才边锋向来身价不菲，但热刺与曼城达成、总价最高8500万英镑引进萨维尼奥，普遍被认为溢价严重。22岁的萨维尼奥2024年从特鲁瓦加盟曼城，此前租借赫罗纳赛季表现亮眼，可登陆英超后迅速状态下滑，代表曼城出战53场联赛仅打入2球。

C | 热刺赛季首战0‑3惨败布伦特福德，球队急需补强攻击线，求贤若渴的心态是否让俱乐部在转会市场付出过高代价。球员转会估值本身没有统一标准，是年龄、合同、过往表现、潜力、商业价值共同构成的复杂命题。《The Athletic》参考德转数据，统计2012年以来英超转会的实际费用与市场估价的差值，衡量交易溢价程度。德转给萨维尼奥估价3010万英镑，其7540万英镑转会固定部分，相比估值溢价4530万英镑，在统计样本中高居第五。溢价榜单榜首是切尔西引进恩佐，实际花费高出德转估值近6000万英镑，不过事后看这笔投资物有所值，如今曼城有意求购，切尔西有望收回成本。榜单紧随其后的凯帕、安东尼，则是英超天价引援失败的典型案例。而排名前五的范戴克7280万英镑转会利物浦，成为英超历史上的超值交易。今夏另外两笔高价交易同样进入溢价榜单：热刺新队友马特乌斯・费尔南德斯（8510万镑从西汉姆加盟），以及切尔西1.187亿英镑签下的罗杰斯。夏窗总投入上，切尔西3.42亿英镑、热刺3.05亿英镑位居英超前列。按德转口径，热刺总溢价1.35亿英镑，高于切尔西的8500万英镑。当然德转估值属于大众估算，并非精密模型。但转会市场本身通货膨胀、国资俱乐部入局，本身就很难用理性衡量，德转的估算整体仍具备参考性，多数英超转会实际成交价高于市场估价。同时，转会时看上去性价比高，不代表后续一定成功。统计反向榜单，即转会费低于市场估价的交易，哈兰德位列第一，多特蒙德的违约金条款让曼城以远低于身价的价格得到这名顶级射手。但除哈兰德之外，这份“捡漏”名单里也并非全是成功案例。萨维尼奥是唯一同时登上溢价榜和低价捡漏榜的球员：当初曼城花费2150万镑将他从特鲁瓦买下，被视作捡宝。如今转会热刺却成为溢价最高的交易之一，充分体现转会估值的不确定性。

D | 中立视角来看，结合萨维尼奥有限的英超输出，8500万镑的总价属于近年令人费解的转会。不过俱乐部球探、教练组会完成详尽评估，考量球员适配德泽尔比战术风格、潜在数据等难以量化的因素，赌他可以兑现更高上限。

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Published on:15:48:18