我的征尘是星辰大海。。。
The dirt and dust from my pilgrimage forms oceans of stars...
-------当记忆的篇章变得零碎,当追忆的图片变得模糊,我们只能求助于数字存储的永恒的回忆
作者:黄教授
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天幕工程2
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天幕,低轨上的非对称博弈,第二章,200公里的伪装屏障。 赵刚把搪瓷杯重重顿在桌上时,林野正指着轨道参数表上的300公里红线。 那是天蓬计划验证了三年的安全轨道,大气阻力小到可以忽略,卫星寿命能稳稳站上8年。 而林野现在要的,是往下挪100公里,扎进200公里的阻力陷阱里。 这不可能!赵刚的手指敲的桌面发响。 200公里的大气密度是300公里的5倍。 薄膜展开后每天掉轨2公里,寿命最多3年。 我们花了7年把轨道往上提,你现在要往下拽,就为了所谓的信号衰减?他抓起天蓬计划的成本核算表。 每颗卫星的推进器燃料成本会翻倍,8年周期的总投入要多花40%。 民用项目根本不可能批。 林野没直接回答,反而从公文包里抽出另一份文件,封皮印着国际电信联盟轨道协调备忘录。 他指着其中一段,300公里轨道带已被近地通行卫星占满,你们8000平方公里的薄膜展开后,轨道占用面积相当于50颗标准微信,国际上 反对声浪很大,上个月,欧盟已经提出抗议,说可能引发碰撞风险。 赵刚皱眉,这倒是事实,天蓬计划二期确实卡在了轨道审批上,但他不信这是林野非要降轨的真正原因。 那也不用降到200公里,250公里就能避开冲突,250公里不够。 林野的语气很平静,却带着不容置疑的坚决。 军方有新的低轨通信项目要上,正好要占用250~300公里频率。 你们的薄膜在200公里,既能避开轨道冲突,又能给我们的通信卫星当轨道屏障。 毕竟这么大的面积,能挡掉不少太空碎片。 他从包里拿出第二份协议。 军方愿意承担全部额外成本,包括燃料补贴和卫星替换费用,相当于合资共建。 赵刚的目光在协议上扫过,合资共建四个字下面附着一行小字,每颗天蓬卫星将搭载军用通行载荷,他忽然明白了什么,却又觉得哪里不对。 天蓬计划的薄膜对所有电磁波都有衰减,怎么可能同时给军用通信当屏障?你们的通信卫星不怕被薄膜挡住信号?我们用的是毫米波频段。 林野翻开测试报告,上面的穿透率数据标着99.6%,正好在薄膜的频率窗口里,就像雨打不透油纸伞的伞骨。 他 顿了顿,声音压低了些。 赵司长,有些事我不能说的太细,但你要知道,这次降轨的所有成本,军方一力承担,你们的民用考核指标不受影响。 对外,这还是天蓬计划的轨道优化方案。 对内算是军民合建的轨道试验项目。 赵刚盯着林野的眼睛看了足足半分钟,忽然抓起笔在协议上画了道线。 我可以签字,但有两个条件。 第一,涂层配方必须由我们团队主导,你们的军工单位只能提供原料,不能插手工艺。 这是天蓬计划的技术体系,他指的是那层 要掺铁氧体纳米粉的铝基涂层,对外说法是提升太阳光反射率。 赵刚敲了敲军用通信载荷那行字。 这东西的能源供应要独立,不能占用天蓬卫星的主电池。 我们可不希望民用项目突然冒出军用功耗的异常数据。 林野笑了,伸手越过桌子。 成交。 握手时,赵刚的指尖触到林野掌心的枪茧,忽然想起刚才林野说的轨道屏障。 或许挡太空碎片是真的,但挡什么碎片,只有对面这个人清楚。 窗外,天蓬计划的宣传屏还在循环播放为地球遮阳的动画,而200公里的 轨道上,一场披着民用外衣的暗战已经悄悄埋下了伏笔。
修正脚本
天幕,低轨上的非对称博弈,第二章,200公里的伪装屏障。 赵刚把搪瓷杯重重顿在桌上时,林野正指着轨道参数表上的300公里红线。 那是天蓬计划验证了三年的安全轨道,大气阻力小到可以忽略,卫星寿命能稳稳站上8年。 而林野现在要的,是往下挪100公里,扎进200公里的阻力陷阱里。 这不可能!赵刚的手指敲得桌面发响。 200公里的大气密度是300公里的5倍。 薄膜展开后每天掉轨2公里,寿命最多3年。 我们花了7年把轨道往上提,你现在要往下拽,就为了所谓的信号衰减?他抓起天蓬计划的成本核算表。 每颗卫星的推进器燃料成本会翻倍,8年周期的总投入要多花40%。 民用项目根本不可能批。 林野没直接回答,反而从公文包里抽出另一份文件,封皮印着国际电信联盟轨道协调备忘录。 他指着其中一段,300公里轨道带已被近地通信卫星占满,你们8000平方公里的薄膜展开后,轨道占用面积相当于50颗标准卫星,国际上反对声浪很大,上个月,欧盟已经提出抗议,说可能引发碰撞风险。 赵刚皱眉,这倒是事实,天蓬计划二期确实卡在了轨道审批上,但他不信这是林野非要降轨的真正原因。 那也不用降到200公里,250公里就能避开冲突,250公里不够。 林野的语气很平静,却带着不容置疑的坚决。 军方有新的低轨通信项目要上,正好要占用250~300公里频率。 你们的薄膜在200公里,既能避开轨道冲突,又能给我们的通信卫星当轨道屏障。 毕竟这么大的面积,能挡掉不少太空碎片。 他从包里拿出第二份协议。 军方愿意承担全部额外成本,包括燃料补贴和卫星替换费用,相当于合资共建。 赵刚的目光在协议上扫过,合资共建四个字下面附着一行小字,每颗天蓬卫星将搭载军用通信载荷,他忽然明白了什么,却又觉得哪里不对。 天蓬计划的薄膜对所有电磁波都有衰减,怎么可能同时给军用通信当屏障?你们的通信卫星不怕被薄膜挡住信号?我们用的是毫米波频段。 林野翻开测试报告,上面的穿透率数据标着99.6%,正好在薄膜的频率窗口里,就像雨打不透油纸伞的伞骨。 他顿了顿,声音压低了些。 赵司长,有些事我不能说得太细,但你要知道,这次降轨的所有成本,军方一力承担,你们的民用考核指标不受影响。 对外,这还是天蓬计划的轨道优化方案。 对内算是军民合建的轨道试验项目。 赵刚盯着林野的眼睛看了足足半分钟,忽然抓起笔在协议上画了道线。 我可以签字,但有两个条件。 第一,涂层配方必须由我们团队主导,你们的军工单位只能提供原料,不能插手工艺。 这是天蓬计划的技术体系,他指的是那层要掺铁氧体纳米粉的铝基涂层,对外说法是提升太阳光反射率。 赵刚敲了敲军用通信载荷那行字。 这东西的能源供应要独立,不能占用天蓬卫星的主电池。 我们可不希望民用项目突然冒出军用功耗的异常数据。 林野笑了,伸手越过桌子。 成交。 握手时,赵刚的指尖触到林野掌心的枪茧,忽然想起刚才林野说的轨道屏障。 或许挡太空碎片是真的,但挡什么碎片,只有对面这个人清楚。 窗外,天蓬计划的宣传屏还在循环播放为地球遮阳的动画,而200公里的轨道上,一场披着民用外衣的暗战已经悄悄埋下了伏笔。
英文翻译
The Celestial Curtain: Asymmetric Game in Low Earth Orbit - Chapter 2: The 200 km Camouflage Barrier. Zhao Gang slammed his enamel cup heavily onto the table just as Lin Ye pointed at the 300 km red line on the orbital parameter chart. That was the safe orbit validated by the Tianpeng Project after three years of verification, where atmospheric drag was negligible and satellite lifespan could reliably reach eight years. What Lin Ye now wanted was to drop 100 km lower, plunging into the 200 km drag trap. "Impossible!" Zhao Gang rapped his fingers on the table, making it rattle. "The atmospheric density at 200 km is five times that at 300 km. After deployment, the thin film will lose 2 km of altitude per day, with a maximum lifespan of just three years. We spent seven years pushing the orbit higher, and now you want to drag it back down—all for this so-called signal attenuation?" He grabbed the cost accounting sheet for the Tianpeng Project. "The fuel cost for each satellite’s thrusters will double, and the total investment over the eight-year cycle will increase by 40%. A civilian project like this will never get approved." Lin Ye didn’t answer directly. Instead, he pulled another document from his briefcase, its cover stamped with the International Telecommunication Union’s Orbital Coordination Memorandum. He pointed to a section. "The 300 km orbital band is already fully occupied by low-Earth communication satellites. After your 8,000-square-kilometer thin film deploys, its orbital footprint will be equivalent to 50 standard satellites. International opposition is strong. Last month, the EU filed a protest, warning of potential collision risks." Zhao Gang frowned. That was true—Phase Two of the Tianpeng Project was indeed stuck in orbital approval. But he didn’t believe this was Lin Ye’s real reason for insisting on lowering the orbit. "Then you don’t need to go all the way to 200 km. 250 km would be enough to avoid the conflict." "250 km is not enough." Lin Ye’s tone was calm but carried an unyielding resolve. "The military has a new low-orbit communication project coming online, and it will occupy the 250–300 km frequency band. Your thin film at 200 km can avoid orbital conflicts while also serving as an orbital barrier for our communication satellites. After all, such a large area can block quite a bit of space debris." He pulled out a second agreement from his bag. "The military is willing to cover all additional costs, including fuel subsidies and satellite replacement expenses—essentially a joint venture." Zhao Gang’s eyes scanned the agreement. Beneath the words "joint venture" was a line of small print: "Each Tianpeng satellite will carry a military communication payload." Suddenly, he understood something, yet felt something was off. "The Tianpeng Project’s thin film attenuates all electromagnetic waves. How can it simultaneously serve as a barrier for military communications? Aren’t your communication satellites worried about signal blockage from the film?" "We use millimeter-wave frequencies." Lin Ye flipped open a test report. The penetration rate data was marked at 99.6%, right within the film’s frequency window—like raindrops that can’t penetrate the ribs of an oil-paper umbrella. He paused, lowering his voice. "Director Zhao, there are some things I can’t go into detail about. But you should know that the military will cover all costs for this orbit reduction. Your civilian performance indicators won’t be affected. Externally, this will still be presented as an orbital optimization plan for the Tianpeng Project. Internally, it’s a joint civil-military orbital experiment project." Zhao Gang stared into Lin Ye’s eyes for a full half-minute. Suddenly, he grabbed a pen and drew a line under the agreement. "I can sign, but on two conditions. First, the coating formula must be led by our team. Your military units can supply raw materials but cannot interfere with the process. This is the technological backbone of the Tianpeng Project." He was referring to the aluminum-based coating mixed with ferrite nanopowder, officially claimed to enhance solar reflectivity. Zhao Gang tapped the line about the military communication payload. "Second, this equipment must have an independent power supply. It cannot draw from the Tianpeng satellite’s main battery. We don’t want civilian projects suddenly showing abnormal military-grade power consumption data." Lin Ye smiled and reached across the table. "Deal." As they shook hands, Zhao Gang felt the calluses from a gun grip on Lin Ye’s palm. Suddenly, he recalled Lin Ye’s earlier mention of an "orbital barrier." Maybe blocking space debris was real—but what kind of debris was being blocked, only the man across from him truly knew. Outside the window, the Tianpeng Project’s promotional screen was still looping an animation of shading the Earth. And at 200 km of orbit, a covert battle wrapped in civilian guise had already been quietly set in motion.
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