Back to the Republic of China to be a editor

"The British government has shown such sincerity, and we also express our heartfelt appreciation and admiration. In fact, the money is worthwhile. Because there are still some parts of the engine that we will still need to import from the UK in the future, as long as you continue to acquiesce in our use of Hong Kong As a transfer point for import and export trade, as you provide the technical information of these two types of engines, your country's aviation industry and other industrial systems will receive a steady stream of orders. Isn't this a win-win result?"

……

Tang Hua saw the latest results of the secret talks in Hong Kong the next morning.

The technical data and processing equipment of the two engines were not found in the UK, but were imported from the United States.The United States will also purchase the authorization of Olympus-1 from the United Kingdom in a while, and produce J67 itself, so it is also possible for the United States to manufacture these engines.

Rolls-Royce-Viper is a small turbojet with more than one ton, and Olympus-1 is a large turbojet with a thrust of 5 tons, developed by Rolls-Royce-Bristol.

The strength of Olympus-1 is that a single thrust is 5 tons, and it can be continuously improved. In fact, the engine of the "Concorde" supersonic airliner can also be regarded as a development type of the Olympus family.

The Rolls-Royce-Viper's forte is a thrust-to-weight ratio of 4.9, which is par for the course in this day and age.

"Director Duan? I'm Tang Hua."

After figuring out whether all the equipment imported this time was finalized, Tang Hua called Shenyang's Aviation Industry Bureau.

"The Southern Engine Manufacturing Plant of the Aviation Industry Bureau, I think we can start working now. The two production and development bases for jet engines are Shenfa in the north and Shenfa in the south... We will decide within a month whether to call it Wufa or Refa It's still hair."

Chapter 29, the prelude to the Taiwan Strait confrontation

Xiamen, before the Taiwan War.

"The Pingtan Island Listening Station intercepted the enemy's telegram with the identification number XW-73-WQ-7." "The Penghu Listening Station intercepted the enemy's telegram with the identification number XW-73-WQ-7." "The Kinmen Listening Station intercepted the enemy's telegram , the identification number is unknown."

The comparison of the telegrams was correct, and the computer of the former finger's combat situation center quickly entered the telegram.

The Taiwan campaign was launched from April 4th to 10th, but by the end of March, the two combat situation centers in Beijing and Xiamen had been put into official operation.

Chiang Kai-shek retreated to Taiwan, and now he is in the state of the king of turtles. The troops are stationed in a fixed place. In most cases, they use telephones and wired telegrams to communicate, and the number of wireless telegraphs is indeed very small.But after all, there are still some, especially the occasional battalion-level troops of the national army pull out of the battalion for exercises, and their wireless communications can be intercepted at this time.

In order to cooperate with the Taiwan campaign, the Communications Department of the General Staff set up three wireless listening stations in Penghu, Pingtan Island, and Kinmen Island. Among them, the listening station in Penghu is the closest to Taiwan on average; Pingtan Island is on the mainland but has the advantage of facing Taipei. ; Kinmen is a little farther away, as a backup station.

The construction of the radio listening station is also the most difficult in Penghu, and the most difficult project is the submarine cable from Xiamen to Penghu.

There used to be a submarine telegraph cable between Taiwan and the mainland, but of course it has been disconnected now.

Speaking of which, the first Taiwan Strait telegraph line was laid by Taiwan Governor Liu Mingchuan in 1887. It was constructed by graduates of the Mawei Shipping and Telegraph School, and the "Feijie" gunboat was a guest cable-laying ship.But the route of this telegraph line is from Fuzhou to Danshui in the northern part of Taiwan Island, and does not pass through Penghu.

Therefore, from October 1952 to January 10, the Navy of the South China Military Region had to use the second-hand landing ship to pawn the cable boat, and lay another Xiamen-Penghu submarine cable by itself.

Zhang Zhen pointed at the combat situation center in front of him, watching several staff officers busy in front of the computer screen with some freshness.

"Commander Su, after the intercepted telegram is sent to the intelligence department, what is the probability that it will be deciphered?"

Zhang Zhen was the chief of staff of Sanye during the War of Liberation, and he was the one who assisted Suyu during the Huaihai Campaign.However, at the beginning of the five campaigns, Su Yu was in Beijing as the acting chief of staff. At that time, Zhang Zhen and the military adviser of the Soviet General Staff were reforming and reorganizing the general staff system. It was the first time he came into contact with this kind of war when he participated in the Taiwan campaign. The headquarters of the center model did not know what Jiaohe's 50 center was doing before.

Su Yu: "As long as we intercept a certain number of enemy telegrams, the probability of deciphering them is [-]%. Moreover, the deciphering is completed in an instant."

"It's Section Chief Wang of the Intelligence Department!" Zhang Zhen was shocked when he heard the commander's words, but his mind was also spinning rapidly, thinking of something, "Section Chief Wang met at the end of 50, and I don't seem to be able to find it in the General Staff in the future." He's gone, isn't he..."

"It's him, Wang Yongjun." As the chief of staff of Qianzhi, Su Yu can tell Zhang Zhen some information, "Now, you can say that you can't see him, or you can say that he is by our side all the time."

Zhang Zhen: "...?"

Su Yu: "You see this computer. There is a telegraph wire behind it... a network cable. Along this network cable, thousands of miles away, the end of the wire is connected to another computer. Wang Yongjun is on that computer. in front of the screen."

……

Beijing.

"Is Xiamen's IP applying for mail?"

Sitting in front of the computer monitoring the entire network, Tang Hua saw that the mail server responded.

Communications staff officer: "Yes, 4.2, the intelligence terminal in Xiamen."

Tang Hua stared at the screen intently, one second, two seconds, the verification passed.Then, an email was delivered from Xiamen to Beijing and written into the hard disk of the Beijing War Situation Center/mail server.

This, presumably, was the world's first e-mail system...

After the Xiamen Center was connected to the computer network, Tang Hua made technical improvements to the War Situation Center. The main thing was to add a mail server. The other thing was that there were more hard drives, a total of six 6M hard drives.

In the past, the communication between computers was to write data to each other's hard disk (memory). Although it is very convenient to use most of the time, no matter it is T51, T52 or T53, the built-in magnetic core memory is dozens of K. , the 50 Center and Tang Hua are frequently used, and the "hard disk" is full, so we have to use tapes to back up the data every one or two weeks or simply print them out for archiving.

Now that there is a mail server, the data of the four centers can all be stored here. When sending data between computers, it will be sent to the mail server first, and the recipient will be prompted at the same time.When the recipient reads the mail, he applies for downloading the data from the mail server to the machine.

Of course, the disadvantage is that the current cable network speed is a bit weak. The network speed of the early generation equipment in 1951 was 300bps, and after the new machine was replaced in February 1953, it was 2bps.But now neither pictures nor small videos are transmitted between the various centers. Basically, it is military orders and deciphered telegrams. For pure text communication, this speed is still sufficient.

Two minutes later, Tang Hua saw 2—the IP address of Wang Yongjun's communication terminal in Jiaohe 2.2 Center—starting to receive mail, and the data read from the mail server was sent locally.

"The verification of the telegram is completed, and the same category is merged. The total amount of the ciphertext of the national army's Class 1 telegram has reached 2112 characters, and the cracking program can be run."

When they first cracked M-209, the cracking program that Wang Yongjun and Tang Hua worked out was to input 2500 words of ciphertext, and only ciphertext could be cracked.After more than two years of optimization and improvement, Wang Yongjun improved a new cracking program in early 52. The average cracking time was shortened, and the requirement for the total amount of ciphertext was reduced from 2500 characters to 2000 characters.

The telegraph cipher machine currently used by the national army is the M-209.The U.S. military replaced it with C52 telegraphs last year, but there were still a bunch of M-209s in the U.S. aid to Chiang Kai-shek.But this is also normal. C52 is a cutting-edge device, and it must be used by the US military itself first. If the C52 is provided to Chiang Kai-shek or other allies in the first place, what if it is stolen?

The cracking of M-209 is easy...

When Tang Hua saw the email sent by Wang Yongjun, he replied: "How much is the cracking of M-209 now?"

王永俊：“M-209现在真是太简单了，预估的破解时间在30~60分钟。50中心最近专注于C52破解程序的优化，52年4月之后就没怎么花时间优化M-209的破解程序，否则可能还会短点。”

When sending an email to Tang Hua, Wang Yongjun had already passed the ciphertext to the TC53 supercomputer and started the cracking program.

1950年9月，王永俊在上海第一次用计算机，第一次用TC50破解M-209的密文。后来在蛟河的50中心，TC50超算退役时他还真有点舍不得。50中心的定名就是因为里面安放的是TC50超算嘛。

1951年2月换TC51，1952年2月换TC52，1953年2月换TC53，运算速度从25万次/秒提高到200万次/秒，现在王永俊对计算机的换代已经习以为常了。

……

Taiwan, Hsinchu Airport.

The 34th Squadron of the National Army Air Force is stationed.

"Brother Zhengmin, have a safe journey."

On the runway of Hsinchu Airport, an RB-17 engine has started and is waiting to take off. The fuselage is painted with a circular logo: a black background with a red circle around the edge. The pattern in the middle is the Big Dipper and a flying bat.

Major Li Chongshan of the 34th Flight Squadron said goodbye to Captain Ye Zhengmin at the side of the runway.

"As long as I don't collide with the anti-aircraft missiles of the communist army, I will return safely," Ye Zhengmin smiled. "If unfortunately I collide with them, then I will be loyal to Jiang Gong."

"Take the border area of ​​Fujian and Zhejiang to cut in. This route is barren and desolate, and the other side will not deploy missiles here." Li Chongshan said, "Let your listeners, you must always check the radar alarm on the plane. The Americans told us If you encounter the radar signature of the military's anti-aircraft missiles, don't hesitate to withdraw immediately if you encounter missile radar detection."

Chiang Kai-shek retreated to Taiwan, and the face-to-face military mobilization of Fujian and Zhejiang provinces became Taiwan's most concerned important information related to Chiang Kai-shek's life and death.The spy system left by the Kuomintang on the mainland has long been useless, and it is almost suppressed. Therefore, by 1953, Taiwan’s strategic reconnaissance of Fujian and Zhejiang relied on two methods: one was aerial reconnaissance, and the other was airdropping spy workers. Reconnaissance, and then use the medium-range radio on the back to send back to Taipei.

Whether it is direct reconnaissance or airdropping agents, aircraft must be used.