"Comrade Manturov, in what do you think we should improve the design of the Lager-3?" Lavochkin certainly knew that he needed to improve the Lag-3 he had designed to compete with his future rival, the FW190. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info But he doesn't know anything about FW190, so he doesn't know where to start.

"According to reliable intelligence, the FW190 fighter can reach speeds of more than 650 kilometers per hour, and the speed of the Lager-3, as I also know, does not exceed 600 kilometers per hour.

In such a situation, I think you should replace this aircraft with a more powerful engine, such as the Svetsov M82 engine. This engine has a low-altitude power of 1500 horsepower, which is 400 horsepower more than the M-105P. ”

Lavochkin nodded, agreeing that his plane needed to be replaced with a more powerful engine. However, there are some problems with this engine, and it may not be possible to change to the Lag-3. "Comrade Manturov, I also think that the Lager-3 should have a better engine, but the diameter of the M82 engine has reached 46 centimeters, which is much larger than the original M-105 engine.

In this case, the front fuselage needs to be modified to accommodate this engine. ”

"That's right," Manturov said, "to fit this engine, you have to rebuild the front fuselage." This shouldn't be a lot of work for you. ”

"It's not too tough, we can definitely handle it."

"Very well," Manturov said the second point, "in addition to this, find a way to reduce the weight of the aircraft, and move the position of the oil cooler from the bottom of the engine fairing to the rear fuselage, and move the supercharger from the engine fairing to the leading edge of the middle wing to improve aerodynamic performance." ”

Lavochkin thought carefully about Manturov's suggestion. Although Manturov was an engineer and his boss, he was a true layman who did not specialize in aeronautical engineering or mechanical engineering.

However, the advice put forward by this layman is very professional and reasonable. This surprised Lavockin.

Manturov was actually a layman, but he had a little study of Soviet history, and by the way, he also learned some knowledge about Soviet weapons and equipment, so he was able to reveal the future development of this weapon to the weapon designer in advance.

"These changes, prima facie, are still feasible. But what is the specific, I have to go back and study it with other comrades in the design bureau to be sure. Lavochkin couldn't think of anything wrong with these changes, but he couldn't easily take the advice of a layman, so he gave this answer.

"In addition, the fuselage of the Lager-3 is really a bit heavy, and the wing control surfaces are too small. If the area of the elevator, tail fin and tail fin can be further increased, the front windshield is also replaced with 57mm thick tempered glass, and the external pylon of the aircraft is increased, which is believed to improve the handling and agility of the aircraft.

To improve visibility in the cockpit......"

"Comrade Manturov," Lavochkin interrupted Manturov, pulling out a pencil and a notebook, "please let me write down what you just said." ”

"Okay, you write slowly." Manturov also felt that he was speaking a little quickly. In order for Lavochkin to remember the changes he proposed, just stop and let him jot them down in his notebook.

Lavochkin quickly wrote down all the improvements that Manturov had just proposed, and wanted to continue listening, "Please continue. ”

"In order to improve visibility in the cockpit, the rear fuselage height should be lowered, and bulletproof glass should be installed at the rear of the cockpit. Aircraft wing spars can be replaced with metal for the previous wooden parts, which should improve the sealing performance of the fuselage powertrain.

………”

Manturov spoke like an endorsement, telling everything he knew, some of the characteristics of the La-7. Of course, he is not an expert in aeronautical engineering and mechanical engineering, nor is he a senior military fan, and his understanding of the La-7 is relatively superficial and not thorough enough, so he only said some of the most important changes.

If Lavochkin can make changes to his work Lager-3 in the direction Manturov said, and according to his expertise, repair the "blind spots" in the improvement plan, it is believed that Laga-3 will soon evolve to a more superior performance, and the La-7 will not be available until 1944.

However, due to limited conditions, there will be many differences between this La-7 and the historical La-7. For example, the M82 engine available at the time, the M82-111, had only 1540 horsepower at low altitudes, while the M-82FN, which was used by the La-7 in history, had 1640 horsepower.

In other words, even if Lavochkin had modified it according to Manturov's proposal, what he would have produced would only be a weak-horsepower version of the La-7. In addition, Manturov did not say how to reduce the weight of the plane, so that the "La-7" that Lavochkin would make by then would be even more bulky than the historical version.

In any case, even if there is much difference between the "La-7" made by Lavochkin and the La-7 that came out in 1944 in history, as long as he can improve the design of the Lager-3 and develop a fighter with better performance and stronger combat effectiveness, this will only be good for the Soviet Red Army, which is inferior in air power, and there is no harm.

Of course, if Lavochkin can really make the La-7, an excellent fighter, come out in advance, it can even change the situation in the early days when the Soviet Air Force was beaten in the air and the army was bombed on the ground.

It's just that it's too early to say that. The specific research and development of this fighter was ultimately executed by the original designer, Lavockin; And the performance on the battlefield was executed by the pilots of the Soviet army or the commanders of the air force.

"At first glance, your proposal is feasible and should achieve the desired effect. But what is the specific, I have to do another study with the comrades in the design bureau before it can be implemented. Lavochkin looked at his notebook and said to Manturov, the young deputy prime minister.

"Okay, that's all I'm going to say for today. You go back and study carefully to find ways to improve the performance and combat capabilities of the aircraft, and the goal is to develop a fighter that can compete with the latest German development of the FW190 and BF109F.

I gave you this job because I trusted your abilities and had faith in the Lager-3 fighter and saw its potential.

Finally, I hope that you will be able to improve the Lager-3 as I have just proposed, and make the most of the potential of this fighter, as well as your potential, and do not waste that excellent aircraft and your brilliant mind. ”

Lavochkin put away his notebook and shook Manturov's hand, "Thank you for your appreciation, I will definitely do my best to complete the task you have entrusted me!" (To be continued.) )