After sending the email, Zhou Yan glanced at Xu Chongsheng who was standing in front of his desk, shook his head helplessly, and glanced at the office door.
"Old Xu, please close the door and close the curtains!"
While Xu Chongsheng went to close the door and draw the curtains, Zhou Yan picked up a remote control from the table and pressed it, and the screen hanging on the wall opposite slowly lowered.
After turning on the projector, the content on the computer desktop is projected onto the opposite screen through the projector on the ceiling.
"The first mid-to-short-range drone, there's not much to say about it. The design mission statement for the unmanned reconnaissance drone requires that additional payloads be added, and a data link can be added to serve as a relay for ground-facing guidance..."
With that said, Zhou Yan clicked on the folder named "Integrated surveillance and combat drone" in the hard disk: "You should be concerned about this, the long-range unmanned strategic reconnaissance drone, right?"
“First, let’s introduce the integrated reconnaissance and attack drone. The design mission requires that it can take into account reconnaissance and ground attack. Correspondingly, this type of drone can only be used in asymmetric warfare. The opponent has no air superiority and no medium and long-range air defense missiles...
…”
The project originated from the last time I went to the public auction. Although Zhou Yan intended to go to the raw stone producing area in Myitkyina, he was unable to make the trip due to safety issues.
At that time, the bodyguard leader Barney said that in case of a situation, support could arrive within half an hour after receiving the news, but that was only an ideal situation, and it would cost a lot of money.
On the way back to China, Zhou Yan, who was a little frustrated, started to find solutions in the later stage. The most effective one was the drone.
While "building blocks" in the virtual space, Zhou Yan took advantage of his free time to refine all the plans, completed the core engine design, and basically completed the main frame.
"This UAV is comparable to the Predator series opposite, but it uses a 1,000-kilowatt turboprop engine. The power is slightly improved. Therefore, the range and payload are slightly stronger than the Predator..."
Once the speed is determined, the wing sweep angle has been determined. In order to ensure the reconnaissance equipment on the nose, UAVs generally have rear-mounted engines. In this way, in order to balance the airflow, the tail must be the same as that of the "Predator" series.
, using V-shaped design.
Although Zhou Yan's computational fluid dynamics level is among the best in the world, he can only optimize the main body to a certain extent, and the basic appearance is still similar to the "Predator".
"Of course, the most critical thing is the architecture of avionics equipment, especially large drones, ground systems, and flight control systems, which all need to be specially designed..." After speaking, Zhou Yan glanced at Xu Chongsheng, "Old Xu, last year I
The five all-wheel-drive trucks that I got back are all still at Zhengxin's place, right? Except for the one that has been converted into an RV, the remaining four have been left alone. I plan to use them as the ground control center of the drone...
…”
"Okay, let me tell Lao Chu," Xu Chongsheng nodded, thought for a while, and asked in a low voice, "How do you plan to solve the high-speed transmission data link?"
"High-bandwidth communication, multiple encoding encryption," Zhou Yan said with a relaxed expression, "Of course, the interface must be reserved..."
"The interface doesn't matter..." Xu Chongsheng looked at Zhou Yan meaningfully, with an expression that said, "I have seen through you," "I have already seen the set of high-reliability electronic circuit design specifications that our avionics department just learned from Xinghan."
It’s no different from the military standard, and some parameters are even much higher than the military standard. How about we build a high-speed data link ourselves?”
"What do you want to do?" Zhou Yan looked at Xu Chongsheng "warily".
As an "old air force", Zhou Yan naturally has a lot of data link information in his hands, especially when he was "mingling" with Lin Mo, he also developed fighter jets by himself and participated in the development of data links.
Moreover, Zhou Yan also knew very well Xu Chongsheng's purpose of developing his own data link: to sell drones.
However, the domestic UAV export rights are in the hands of CASC, especially the Colorful large UAV series, which is CASC's pocketbook.
Naturally, Xu Chongsheng understood Zhou Yan's concerns and looked at the drone shape on the screen with a proud face: "Mr. Zhou, as long as you can assign the data link to the drone, you don't have to worry about sales..."
"Old Xu, you guy..."
Zhou Yan is very clear about Xu Chongsheng's plan: He plans to give the overseas sales rights to AVSC. However, this is also a good thing. At least the overseas sales rights will be given away, and domestic sales promotion will be much easier.
There are three major parts of a drone: engine, fuselage, and avionics.
Xu Chongsheng didn't pay much attention to the engine. Not to mention that the company's first engine had passed the national design review. Although the guy opposite was only "self-taught", Xu Chongsheng knew that a 1,000-kilowatt turboprop engine was very important to him.
In terms of goods, it’s just a small CASE.
In terms of avionics, Xu Chongsheng is not worried. Although the avionics system of large aircraft, the so-called fly-by-wire control system, is more troublesome, the architecture is relatively simple, that is, the level of non-intelligent aircraft, and only requires reliability and redundancy.
It's just relatively high...
When Zhou Yan was flipping through the information, Xu Chongsheng, who was sitting on the sofa, just took a quick look and shouted "passed". It wasn't until he turned the page to the phone that he stood up, approached Zhou Yan, and grabbed the mouse in his hand.
"Titanium alloy main wing spar, composite material frame and skin..." Xu Chongsheng turned around and looked at Zhou Yan in surprise, "Are you planning to make a plastic bug?"
"What else can be done?" Zhou Yan spread his palms, a little helpless, "For export products, it is impossible to squeeze the engine performance to the limit. Under the premise of ensuring the range and load, in order to ensure the strength of the body, composite materials can only be used.
and……"
"The company's newly developed composite material production line can come in handy, and..." Xu Chongsheng smiled angrily, "Composite materials can also be used as a selling point..."
As for the mounting capacity, 1,500 kilograms to 2,000 kilograms is barely enough.
"By the way," Xu Chongsheng looked back after looking for a while, "the flight control of a turboprop engine should be much more complicated than an internal combustion engine, right?"
"When the finished engine is finished, take it to the test center, prepare the performance curve, and match it with the receiver," Zhou Yan thought for a while and continued, "The rest of the flight control only needs to be calibrated a few times on the performance curve.
Just set a fixed point and make it into gears. How do you expect the big companies in the Middle East to be able to handle complex working conditions?"
"That's right..." Xu Chongsheng smiled coquettishly, "So, the flight control system of the drone is not that complicated!"
"The ground control system is troublesome," Zhou Yan smiled and shook his head. "Takeoff and landing can be done in fixed procedures, but complex situations, such as extreme weather, complex airflow, and anti-aircraft firepower, require procedures to be prepared in advance.
Assist the pilot in controlling the aircraft..."
Trouble is trouble, but Zhou Yan has a virtual space where he can simulate various situations and formulate corresponding response procedures.
Xu Chongsheng’s last focus is the paddle.
Because the speed of a turbine gas engine is fixed, adjustment can only rely on the air intake and gearbox. However, a turboprop engine is slightly better. The blades can be torque-varied, that is, the blade inclination angle can be adjusted to change the thrust.
However, the design of variable-torque blades is more complex. Even the same blades have different working efficiencies at different inclination angles.
However, when Xu Chongsheng saw the design model and aerodynamic data of the propeller, Wei Wei was a little surprised: "Mr. Zhou, has this thing been designed?"
"It has been simulated using fluid software, and the efficiency is pretty good..."