Canteen System Assistance Notes

The "Yaozhen 2" is intended for small numbers of troops for "actual combat use." It uses a 2204 motor and 18650 battery, boasting a flight time of approximately 20 minutes, a ceiling of less than 300 meters, and a speed limit of 60 kilometers per hour. When paired with a ground antenna and remote control, it can maintain stable 48-second image transmission and inertial navigation within a 5-kilometer range. Due to the addition of an anti-interference module and waterproofing, the aircraft's payload, excluding essential equipment, is only approximately 200 grams, barely enough for an action camera.

"Look, it's flying pretty well! Flying this thing isn't that difficult."

Watching the students operating the virtual aircraft using the remote control to direct the virtual aircraft back and forth between simulated obstacles, Zhou Lifan encouraged the remaining students, saying, "Once you become proficient in the simulated flight, you can then combine it with first-person indoor flight practice to hone your skills."

"After that, I will not only teach you how to operate it outdoors, but also how to assemble a new remote reconnaissance system." Finally, Zhou Lifan, a former surveyor and former ground crew member of the Eighth Route Army Air Force, encouraged us. "Wow!"

This made the trainees at the simulation training ground even more excited. Hadn't they all been undergoing flight training and learning about electromechanics for this very moment? Suddenly, everyone was even more eager to try. "After completing this 'obstacle course,' you can leave the flight and let the next person take the helm."

Didi didi!

The student at the computer finally completed the entire obstacle course, and the flight simulator chimed in, congratulating the pilot for successfully completing the "level challenge." But after removing his FPV goggles, the student looked around in bewilderment, his face suddenly pale.

"Hey, hey, Li Changzi! Li Changzi! What's wrong with you?"

A classmate asked anxiously, but the student Li's throat moved and he could not say a word - his face was tense and his body rose and fell several times.

Finally, he couldn't help himself. The unfortunate comrade rushed to the enamelware on the side.

He vomited next to the bowl with a "wow".

Ah, this is "3D vertigo"...

Chapter 504: The Fantastic Journey of “Tree Fruit” (3) The First Generation of Air Defense Chain

(This chapter covers technical details and not-so-black technology)

Batu Bay.

There was a Henschel 33 heavy truck parked on the side of the road, accompanied by several Ford freight-to-passenger trucks and Bedford medium trucks commonly seen in the border area, as well as an out-of-place Mercedes-Benz L2000.

There were many people on board these vehicles, and they all got off the modified buses, unloaded the oil drums from the Bedford, and poured them into the refueling port of the Mercedes-Benz 1200 trailer. Then, someone held the crank and worked together with another young man to crank the crank to start a huge diesel generator on the trailer.

Electricity flowed through wires into the back of the Henschel truck. Comrade Li Qiang, Minister of the Border Region's Department of Industrialization and Standardization and leader of Black Technology Team A, personally approached and pressed a button on the side of the truck. The Henschel was propped up on its legs, transforming it into a stable platform. As Li Qiang operated, a bizarre mechanism slowly rose from the large box at the back of the truck.

Well, there's a bit of a story behind these trucks.

Aside from the Bedford, which served as a fuel carrier for the Eighth Route Army's internal transport team in the Border Region, the Mercedes-Benz L20O, which hauled equipment and trailers, and the Henschel 33, which carried electric motors, were all supplied to the Nationalist artillery units by Germany after the latter purchased 150mm howitzers. These vehicles, along with a Ford 917 converted into a passenger van, were originally assigned to the 10th Artillery Regiment stationed in the Taolinsai area.

I just don't know why it ended up in the hands of the Eighth Route Army and then passed on to Li Qiang's "Radio Frequency Antenna and Radio Detection" project team.

"Has the plane departed yet?"

Li Qiang asked the telegraph operator beside him. After receiving a positive answer, he took out a compass to confirm the direction and then turned his gaze to the west.

The mechanism on the Henschel truck finally reached the top of the mast. With the assistance of several soldiers, the researchers installed the unusually shaped Yagi antenna, which resembled a clothesline. Then, the antenna complex began to slowly rotate. Yes, it was a radar.

At the same time, at the Xihuayuan Airport in Xingqing Prefecture, Ning Province, two four-engine bombers were accelerating on the long hardened runway and began to slowly climb with bombs in their bellies.

And those were two early-model Halifax bombers.

"Yes, yes! There's an echo!"

Suddenly, the operator next to the Mercedes-Benz truck cried out in delight. He carefully examined the A-type echo display on the cabinet. A sudden spike began to appear periodically at a specific location, as the antenna rotated three times a minute. Meanwhile, on the B-type flat-panel display on the other side, a flashing green fluorescent dot appeared above the fixed terrain echo.

"Distance 232.5 kilometers, bearing 313 degrees."

A researcher from the radar team sat before a cabinet packed with circuit boards, tubes, and strange black boxes, measuring the light spots on the monitors with a ruler and protractor. After completing the measurements, he flipped the "terrain compensation" switch, activating the filtering module. Now, the undulating, fixed echoes on monitor A and the large, fixed bright spots on monitor B were largely eliminated, leaving only a flickering waveform spike and a small green dot.

"Distance 232 kilometers, bearing 313 degrees, no change. This will work! Commander, this will work!"

50-meter ranging accuracy, 1-degree angular accuracy, no altitude measurement capability, the ability to filter out extremely low-speed echoes, integrated transmitter and receiver, and a pulsed transmission and reception system. Furthermore, it boasts a detection range exceeding 230 kilometers for Halifax-type targets. These data indicate that the radar team's two-plus years of "hand-rolled" achievements have passed even the most basic tests—this path is viable!

Wait." But Li Qiang showed no emotion. He walked over, stared at the buzzing display, and asked, "Why is there only one bright spot? Are those two Air Force planes flying in formation?"

News quickly arrived from the other radio station: Halifax 402 and 403 had taken off one after the other, but the second Halifax had spent some time troubleshooting an engine problem before takeoff, delaying its takeoff. Halifax 403 was still at an altitude of over 1000 meters, struggling to climb. Consequently, the radar echo from Halifax 403 was lost in the ground echo, becoming indistinguishable and undetectable.

For low-altitude targets, the radar's detection range will be closer... Although this has long been inferred through mathematical calculations and physical laws.

But after seeing and experiencing it in actual practice, it is obviously a different experience.

Same feeling.

"Radar is indeed inadequate for detecting low-altitude targets. We need to be more careful when organizing air defenses. We must be wary of the Japanese using low-altitude raids in the future."

Air Force Chief of Staff Chang Tiandi, who came to observe the radar test, offered his opinion. "Is there any way to remedy this? I can think of integrating the radar with existing air observation posts and connecting them to the air defense command system to complement each other. Then, we could raise the radar a little higher to provide a longer-range view. Could that improve the situation?"

"Integrating the radar into the air defense command system is a predetermined matter. It will be beneficial to complement the observation post."

Ge Zhengquan, another leader of the radar team and a researcher from the Department of Physics at Nanjing Normal University, responded, "However, raising the radar antenna doesn't necessarily improve detection range. While generally speaking, raising the antenna does reduce Earth obstruction and allow for longer range, sometimes radars rely on reflected ground waves to receive target echoes. In these cases, raising the radar antenna might not be beneficial enough—it requires a case-by-case analysis."

"But Chief of Staff Chang, there's no need to worry about the Japanese for the time being. I heard from comrades in the intelligence system that the Japanese army's radar is still in the research stage.

Stay at the 'alert' level."

Li Qiang interrupted and added, he introduced the development progress of Japanese radar,

"The equipment they have in Jiangcheng is a 'radio warning system' consisting of a transmitting tower and a receiving tower. It only reports a passing aircraft when it passes between the two towers. The target's speed and distance are completely unknown. Their navy and army have a separate branch of service and lack cooperation. It will take some time for them to understand the operating principles of our radar."

"That's good, ha, we can't always pin our hopes on the enemy's stupidity! Even if the Japs are making trouble, the more trouble they make, the better it is for us.

Chang Tiandi laughed heartily. He extended his hand and shook hands with each of the researchers present. "Congratulations on the successful test of our radar today! While I don't mean to put any pressure on the radar team, I still hope we can use our self-designed radar sooner rather than later!"

"The next test will be our home turf! Our Air Force must perform well!"

"Team Leader Li Qiang, over the past two years, I've watched this radar being built from scratch."

Chief of Staff Chang Tiandi walked to the operator's seat and began directing the Air Force's communications officers and staff to contact the two departing Halifax bombers, preparing for the next phase of testing. Watching him busily engaged, Ge Zhengquan couldn't help but sigh, "At this moment, I truly feel that what I'm doing is completely different from what I've done before; I'm truly contributing to the nation's prosperity and independence, and to its fight against Japanese aggression and national salvation."

"Mr. Ge, why be so modest? If you had continued to work in the air separation and oxygen production industry, you could have made a positive contribution to the War of Resistance."

"Of course not—you're well aware of what I did in 1938, Team Leader Li." Ge Zhengquan shook his head and sighed. "I was merely visiting our local air separation plant and reporting back to the Aviation Administration to purchase a similar set of air separation equipment to the one used by the Eighth Route Army's factory! Those groundless scoundrels, presumably on the pretext of collaborating with the Communists, staged a terrorist act... It was only thanks to Vice Chairman Zhou's intervention that my family, friends, students, colleagues, and I were able to avoid imprisonment."

He snorted: "Since 'over there' says I'm 'collaborating with the Communists', I might as well really 'collaborate with the Communists'!"

Li Qiang also laughed at Ge Zhengquan's "broken jar" attitude. At the end, his joy subsided a little, and his eyes turned to the west: "However, Mr. Ge, our radar group's research progress is far from over." "Well, yes, the current No. 1 warning radar is just a prototype. Our scientific research institutions, Shaodun Electromechanical Company, and the Air Force must strengthen cooperation to improve deficiencies as soon as possible, freeze the technology, and realize the mass production of radar..." "That's not entirely true." Li Qiang shook his head, "Mr. Ge, do you still remember the process of our research on the 'magnetron'? About plasma simulation and waveform simulation?"

"Oh, that time... I remember asking Mr. Shuguoer to help with the simulation calculations..."

"Oh, yes. Many parts of our current radars use black box devices similar to Mr. Shuguoer's." These things are not convenient to be made public. Although we can obtain a lot of finished products, we can't manufacture them ourselves. "Li Qiang pointed to the cabinet connected to various cables, but it was far from full.

"Not only do we need to improve the radar and solve the problem, we also have to come up with replacement equipment - we're probably not the only ones who will need this stuff in the future!"

Chapter 505: The Fantastic Journey of the Microcontroller (4) Who Keeps the Secret from Whom

The "Halifax" is a British-made four-engine bomber. It is the largest four-engine aircraft in the hands of the Eighth Route Army except for the "Boeing 307".

There is no need to introduce the relevant data in detail. It is enough to know that this guy is an absolutely large aircraft for China at that time: it can carry more than 5 tons of bombs and fly 1600 kilometers, or carry 2.6 tons of bombs and fly 300 kilometers. It is a serious "heavy bomber" - so even with some discounts, Liu He spent a lot of pounds of "shopping coupons" to buy several of them.

As for why the British are willing to deliver five of these things at a time when aircraft are in short supply, well... maybe we have to ask the Germans.

Liu Helian sold the oil fields in North Germany to the Germans in exchange for the safe arrival of air separation and pesticide production equipment in the Soviet Union.

- Fish two eaten. These data were changed to "more accurate approximate area", and then lost

Gave it to the British.

Afterwards, Arthur Travers Harris kept his word: the Sino-foreign joint venture "Northern Airlines" was able to purchase five British-made "four-engine large passenger and cargo aircraft." The funny thing is, when the British sold the aircraft, they faithfully embodied their style of combining kindness and evil.

First, perhaps due to process dependencies, British bureaucrats actually issued five additional civil aircraft numbers to Northern Airlines. These five Halifax aircraft then went through the full civil aviation registration process, being registered under the name "Sino-British Northern Airlines" as dual-use passenger and cargo aircraft.

Secondly, the British shipped the aircraft to Canada, where they underwent extensive maintenance and repairs. They diligently restored the aircraft, even providing spare engines and various spare parts. But why repair such perfectly good aircraft? The reason was, of course, that the five MK2A bombers the RAF had given them were secondhand, damaged in bombing raids against Germany. When the Eighth Route Army inspected them, they could even see a hole beneath a patch of skin, ripped open by a 20mm cannon.

More importantly, although the British contacted a Canadian manufacturer to repair the aircraft, they removed the 7.7mm self-defense machine gun and CSBS sight on the aircraft during the repair process, saying that it was for "confidentiality."

Finally, only the bare base and turret body were left at the bombardier and machine gunner's positions.

The Halifaxes, numbered 402 and 403, climbed to cruising altitude and began approaching the radar position in Batu Bay. Their paint scheme had been changed to the standard three-color desert camouflage of the Eighth Route Army bombers, with a red star and Chinese insignia. The vertical tail rudders were also painted with blue and white identification stripes.

These aircraft show a mix of Chinese and foreign styles.

The small 7.7mm machine gun on the Bolton Paul company's electric hydraulic turret had disappeared, replaced by a .50 caliber aircraft machine gun. The bombardier lying on the nose of the plane fixed his eyes on the search eyepiece, looking forward through the "greenhouse"-style front cabin glass.

"Captain, I see the target. It's right in front of us, about 15 degrees!"

The microphone clipped to his throat, shielded from the rumbling noise of the cabin, relayed the target information to the pilot on the upper deck. Soon, the lead aircraft, 4D2, aimed its nose at the huge white target painted on the yellow-green grassland.

The target of the Halifaxes was naturally not the radar station under test, but a huge bombing target about 5 kilometers north of the radar station. It was a marker made of huge white stones, flagpoles and cloth curtains. It looked like a huge ruler lying on the Gobi Desert, marked with "1000", "800", "500..." Each number corresponded to a circle, and finally the number returned to zero, and a huge x was drawn on the ground.

"402 to 'Eyes,' prepare to enter bombing run. Over."

"Eyes registered, we can see you. Over."

The radio operator had just finished communicating with the ground when the captain's voice rang out again: "Attention, crew 402, prepare to begin bombing."

As his voice sounded, the motor in the cabin roared, opening the bomb bay in the belly of the aircraft, revealing rows of bombs.

If it is a traditional 1941 Halifax, the process of entering the bombing range at an altitude of about 3000 meters is basically as follows:

After the captain aligned the target and maintained the aircraft in straight and level flight, the bombardier would align the search eyepiece with the intended target, then ventilate the CSBS MK11 sight, activate the gyroscope, and enter the leveling phase. Simultaneously, he would operate a manual slide rule based on the data from the mechanical instruments, calculating each bombing parameter and entering it into the sight.

Aircraft altitude, airspeed, heading angle, wind shoulder, drop drift, bomb type. Once this cumbersome and lengthy string of input is complete, a notched crosshair will appear in the bombing sight, marking the exact time for dropping the bomb. When the cursor pointer representing the exact bombing angle moves inside the crosshair, the bombardier only needs to press the release button to successfully drop the bomb.

Boom! Theoretically, the bomb can be dropped within 50 meters of the target.

And what about the Eighth Route Army's "Halifax"?

After the captain shouted the command "Begin bombing," the bombardier activated the electromechanical module, which contained a multitude of electronic components. With the combined operation of the gyroscope chip, level, and accelerometer, the pre-set bomb free-fall trajectory was sequentially read by the STM chip. The aircraft's heading, airspeed, and altitude data were then linked to the shock-resistant analog circuit.

All the bombardier needs to input is the wind direction and speed reported from the ground, as well as the air pressure data.

"Ready to bomb!"

He shouted, and immediately put his eye to the bombsight's eyepiece. The target he had previously aimed at was encircled by a red aperture, gradually approaching the center of the screen. There was an H-shaped aiming frame that trembled slightly with the aircraft's status, representing the expected release point and the possible bomb dispersion area.

Finally, the bombardier pushed the joystick, slightly correcting the target's position and manually adjusting the bomb's starting point, turning the H-shaped aiming interface into a "well" shape. The Halifax T was now carrying not just one bomb, but eight 250kg training bombs. With this level of bombing, the target had to be completely covered!

"Good bombing aim!"

"bomb!"

Click, click, click, click!

The sound of the bombs loosening from the hooks was barely audible, but everyone on board felt the plane floating upwards! Amid the low roar of four engines, eight 250-kilogram bombs were summoned by Newton and rushed towards the ground with their heads down.

The high-drag ring at the tail of the bomb pulled it, forcing it nose-down in a death dive. The plane had given the bombs their initial speed and altitude, and the pre-calculated wind direction and air pressure matched their approximate drift. The computer-simulated descent trajectory was being faithfully reproduced. The bombs gradually emitted a terrifying roar, and with the force of thunder, they aimed at the huge circular target on the ground and smashed down fiercely!

Puff, bang, bang, bang!

The tail gunner reported excitedly: "Hit! Hit! We blew the target away!"

Even without a charge, the 250-kilogram ammunition still stirred up a cloud of dust. After the smoke and dust cleared, the ground observation team delivered even more gratifying news: "402, you've successfully covered the target. The maximum impact zone is no more than 200 meters from the bull's eye. Over."

"This is 'Eye'. Congratulations, 402." "Thank you! This is all thanks to everyone!"

With a touch of modesty, the crew of 402 were actually incredibly happy. If they weren't still in the air, they would have practically jumped for joy. But with the captain's cough, everyone returned to their work. Now, their bombing training was complete. 402 needed to climb out of the airspace in time to allow 403, following behind, to conduct its tests.

".....402, please climb to 4000 meters and return via route H2. Over."

"402, received. Climbing to 4000, returning on H2 route, over." "403, this is 'Eye'. Received, please reply."

"403 received, clear and loud." A new voice came into the communication channel. He was the No. 403 aircraft following behind and witnessed the No. 402 aircraft dropping a free-fall bomb.

"Conducting the test according to the planned subjects. Over."

"403 understands. Conduct the test according to the planned subjects. Over."

As the steady male voice ended, the "Halifax" numbered 403 entered the airspace from west to east. Unlike the No. 402, its bombardier did not aim the search eyepiece's field of view and the injected photoelectric at the target. Instead, he picked up a handle from the side of the combat position and lay on the sight.

The radio operator in the back flipped a switch, lighting up a display screen. He used the keyboard and ball mouse at his seat, checking strings of data, while the navigator in the plotting booth watched the lines of code dancing on his screen.

The bomb bay of the 403 aircraft slowly opened, and several heavy bombs weighing one ton, equipped with lift wings and movable wing surfaces, were ready to be launched.

Chapter 506: Japanese Stories: The Evil of Ignorance (Part 1)

The man from Shillong dropped his hoe and fled from the unearthed barrel. But soon, he knelt on the ground, scratching around with his hands.

The thick liquid that had just gushed out felt like boiling oil, like sticky sludge, like rotten garlic. He felt himself being swept away by the darkness around him, like the pitch-black darkness of a mine shaft—his eyes stung, and rubbing them only made the pain worse. He felt as if someone had dug the tip of a red-hot iron spoon into his eye sockets, desperately trying to dig out his eyeballs.

“Oh…ah, ah…ah…”

Jinxi fell to the ground, screaming silently and gasping for breath. He wanted to cough, but his lungs seemed to be filled with a wild dog in heat, harassing every part of his trachea.

Then squeeze all the organs out of the chest cavity - gradually, he began to lose his hearing

Hearing the sounds around him, everything seemed to be moving away from him.

"Da Lang...A Zi..." He roared intermittently.

"Save me, I don't want to die..."

"Dad, Dr. Oda is coming to see Dalang tonight."