Chapter 189 The idea of DSI air inlet
“This aircraft...”
After staring at the screen for a long time, Sun Huizhong finally spoke again:
“ I feel that the potential of this aircraft may not only be limited to being a training aircraft, but may also be used part-time as a light attack aircraft.”
He is now thinking of ways to create a demand for one. Larger planes are coming.
It would be best if they could also be sold to foreign customers.
At this time, the status of companies that can earn foreign exchange for the country can rise like a rocket.
In addition to being used for teaching, the two-seat fighter jet can also have an extra pilot that can be used to do some operations that have nothing to do with operating the aircraft, such as searching for targets and controlling precision-guided weapons.
Although these functions can also be concentrated on single-seat aircraft, there are still risks in allowing pilots to multitask.
So it seems to be a pretty good choice to let an advanced trainer aircraft with good flight performance part-time in some ground attack missions.
After all, the cost is low.
“But after all, it is the same size as the JJ-7, so the bomb load and range may not be too optimistic...”
Another person raised his concerns.
"Isn't it better to be 5 stronger than the current equipment?"
Someone immediately retorted:
"And it can also be equipped with radar and precision-guided weapons."
"What precision-guided weapons do we have now?"
"Uh... there will always be..."
"..."
There was a lot of discussion in the surrounding area.
"Well...actually, we can make some fine-tuning on the same platform."
As soon as Chang Haonan, who was in the middle, spoke, the others quickly became quiet, waiting for his next words:< br>
“For example, try to further increase the wingspan and reduce the sweep angle, so that the area of the outer wing section is increased and can accommodate an additional set of fuel tanks to increase the range, and then install different airborne equipment. Two sub-models are developed to cater to customers with different needs.”
“In our country, there may no longer be a demand for light attack aircraft, so we can purchase the advanced trainer type, which is the rear cabin. Only the driving function with higher authority is retained, and there is no need to install radar and mount large-size ammunition. "
"Will there be a follow-up model of Qiang 5? "
Sun Huizhong was a little surprised by this judgment:
“I have a classmate who works in Hongdu and said that they are considering a new attack aircraft project.”
Chang Haonan nodded:< br>
“Times have changed. For a big country like ours, the future will be dominated by multi-role fighter jets, with at most a few fighter-bombers included.”
Positioning of the Strong 5 It is completely different from the currently more common Su-25 and A10. It has no armor and poor low-speed performance. This model was designed to carry nuclear weapons to carry out low-altitude and high-speed penetration missions destined to no return.
However, due to limited technical conditions, the ammunition to go with it has never been released. The Hurricane One is actually just a nuclear trigger. Therefore, the attitude of using the remaining heat and the Army's long-term lack of dedicated armed helicopters allowed this weapon to be used. The top cylinder of the model is responsible for tasks such as close support.
At this stage that is about to enter the new century, there is no room left for light attack aircraft in the air force sequence.
"So, what about the advanced coaching type?"
Someone brought the topic back.
“Although our country no longer needs it, some foreign users, especially users in third world countries in Asia, Africa and Latin America, their main combat targets are basically rebels or terrorist...guerrillas, so there will still be The usefulness of this kind of aircraft is to buy a combat training model, install more advanced airborne equipment in the rear cabin, such as multi-function displays, and leave two relatively large hanging points for hanging some air-to-surface missiles. Something like that. "Hiss... can this be done?"
The rest of the people showed expressions of surprise or realization.
This idea was not very popular in the mid-1990s, but after entering the 21st century, as the cost of fighter jets soared rapidly, many small countries began to consider giving up the establishment of an air force with air combat capabilities (anyway It can't be beaten, so it's better to abandon the treatment altogether) and use trainer/attack aircraft and integrated detection and attack drones as the main models.
“Of course, in the next period of time, I will work with you to improve this plan and optimize the design of several key parts. When you master the design method, you can also customize it according to actual needs and We will make subsequent adjustments to the aircraft based on future test flights."
Chang Haonan turned around and looked at the few good candidates sent by 648.
After more than half a year of experience, he has gradually become accustomed to the computer basics of people in this era, and there will no longer be the same mistakes as when he taught Yao Mengna.
Before rebirth, all graduate students must have been quite proficient in numerical simulation and knew one or two basic programming languages.
But in 1997, most designers only had some understanding of several common modeling and fluid calculation software. They had only read books and used them personally.
This situation will probably take another two or three years, and it will not be fundamentally relieved until the same batch of students like Chang Haonan graduate with a master's degree or a doctorate.
“We all listen to you!”
Everyone, including Sun Huizhong, instantly showed excited expressions.
We are all people who can enter the aircraft design research institute, so we naturally know the difference between a full meal and a full meal.
Not everyone can get the opportunity to have a big boss teach you how to design an airplane.
Not to mention learning all the other party's abilities, even if he learned 30% to 40%, it would be enough for 648 to come up with some new tricks.
“Well, I have just explained the overall design of the aircraft, so let me systematically introduce the theoretical basis and basic steps of digital design...”
In the next two hours or so, Chang Haonan gave the engineers of Institute 648 a course that was roughly equivalent to an introduction in an empty conference room with a blackboard nearby.
Fortunately, these college students who graduated in the 1990s or even the late 1980s have a much more solid theoretical foundation than later generations, so this aspect is not strenuous. It is just about the same as Lin Shikuan and others from the 601 Institute. Need to change the way of thinking.
“Considering that everyone’s experience is not enough, we still have to proceed step by step in terms of design difficulty. In any case, we must first come up with the specific design plan as soon as possible, so that the superior units and users will have confidence. ”
“So we can use a more traditional partition air inlet in the first version of the design, and the design of the side strips and wings can also be slightly more conservative. When the project is actually applied for, even the first prototype will be launched. After flying, I will slowly use some more radical techniques."
After saying this, he put down the chalk with a dry mouth, picked up the cup and took a big drink of water.
In fact, it is quite normal to use an aircraft specifically to verify a certain technology.
For example, in the United States, the technical verification of the DSI air intake was carried out on a modified F16block30.
The Soviet Union also verified the axially symmetrical appropriate amount of nozzles on a modified Su-27UB
But Chang Haonan wanted to be more efficient, and in the process gave the coach 9/FTC2000 Just do it.
“Are you so sure that the Air Force will approve our model plan?”
Obviously some people are not confident enough. After all, 648 Institute has indeed had little successful experience in this area in the past.
“Of course, this is what I want to say next.”
Chang Haonan turned the filled blackboard to the other side:
“In the final version of the design In the plan, I plan to use a boundary layer-free supersonic inlet, which is a DSI inlet.”
“On the one hand, this can reduce the weight of the aircraft by about 130-150 kg. , and more importantly, it is also to use this project with low overall risk for verification. If the technology is mature, it can be used in Project 10 and even future fourth-generation fighter jets.”
"With this second reason, and the fact that the Air Force really needs a new type of advanced trainer aircraft, I think it is almost certain to officially determine this model."
(End of this chapter)