Xiao Zhenlei watched several jet fighters in the sky performing various tactical maneuvers under the pilot's pilot, these tactical maneuvers were obviously trained, because these tactical maneuvers were not something that propeller fighters could do.

Xiao Zhenlei nodded while looking at it and said, "Yes, yes, this is more than twice as fast as a propeller plane!" ”

Chu Hedong, who was next to him, introduced: "That's for sure, President, the flight speed of our third-generation propeller fighter has reached more than 500 or nearly 600 kilometers per hour, but when the speed of the propeller and the flight speed of the aircraft reach a certain level, it is no longer possible to speed up the propeller speed to make the aircraft faster." Therefore, in terms of flight speed, the flight speed of the jet aircraft is significantly higher than that of the propeller aircraft, and now the flight speed of our jet aircraft has reached 960 kilometers per hour, and the aircraft is equipped with two cannons, with its speed advantage, as long as the pilot's posture and operation technology training are up to standard, it can deal with at least three of our most advanced third-generation screw fighters."

Chu Hedong's introduction reminded Xiao Zhenlei of the "Comet" jet fighter jet fighter produced by Germany in 1942 during World War II, which used a jet engine that could produce 2,000 kilograms of thrust, a maximum flight speed of 953 kilometers per hour, and two aerial guns. The "Comet" entered the war one day in 1944, and the "Comet" shot down three advanced American fighter P-51s in one fell swoop with its unique high-speed advantage, and then "killed" two B-17 bombers. For a time, the "Comet" jet fighter became famous on the air battlefield. However, jet fighters are still a new technology. "Comet", in addition to having an advantage in speed. In many respects, the performance was far inferior to that of the excellent piston fighters of that time. Having studied and understood the "Comet", the Allies quickly found its weakness and fought back resolutely and skillfully. The "comet" was unable to function and became a "short-lived ghost".

Chu Hedong then introduced: "Our jet does not burn gasoline. It's kerosene! Jet aircraft engines work differently from piston engines in that their combustion process is not interrupted. The fuel ignites, and later it can be burned until the engine is out of oil. Therefore, it is not required that the fuel has a fairly good evaporation, and burning gasoline is overkill. Not only that, but modern jets fly high and fast, which poses a big problem: high-flying aircraft, because the air is quite thin and the atmospheric pressure is low. In addition, the fuel is in a low-pressure state, usually in this environment, if gasoline is used as fuel, the gasoline in the fuel tank and oil circuit will boil immediately, resulting in a lot of oil vapor, blocking the oil circuit, causing "gas blockage". The engine will also stop in the air due to the lack of fuel, resulting in serious flight accidents such as crashes and deaths. In order to prevent the appearance of "gas locks", jet planes can only use kerosene, which has a relatively high boiling point and is not easy to evaporate, as fuel. Furthermore. Kerosene has much better lubrication than gasoline, and gasoline will make the lubrication performance of various parts of the engine worse, greatly shortening the service life of the engine, so this is another reason why jet aircraft burn kerosene! ”

Xiao Zhenlei listened to Chu Hedong's introduction. While observing the situation of the aircraft, by observing these jet fighters, Xiao Zhenlei also found that this fighter was not only flying speed. In many other aspects, it is not as good as the screw fighter, so he said: "Director Chu." In addition to the great advantages of this jet over the propeller fighter in speed and altitude, it seems that it is inferior to the propeller fighter in other aspects! ”

Chu Hedong is not shy about it. Said directly: "Yes, it turns out that the president has also seen that the jet fighter we developed is indeed inferior to the screw fighter in other aspects in addition to speed and altitude, but this is only temporary, this aircraft has not yet been finalized, we have only produced these six, mainly to test the flight performance, easy to transform, I believe that after our improvement, the performance of this fighter in other aspects will far exceed the propeller fighter!" ”

Xiao Zhenlei affirmed Chu Hedong's statement, he said: "Yes, these deficiencies can be improved, and the rest depends on your research institute!" ”

Chu Hedong said: "President, our research institute has also developed a new type of propeller fighter, this kind of fighter was developed under the guidance of Minister Cai, we believe that this kind of propeller fighter in the low-altitude field is of great help to ground operations, according to different uses, it can also be improved into a transportation function."

Xiao Zhenlei said: "Oh? And developed an airplane? Then I'd like to see it, you let them test fly it! ”

"Okay!"

In fact, after listening to Chu Hedong's words, Xiao Zhenlei had a hunch that the kind of aircraft they developed in Chu Hedong was instructed by Cai Guodong, and it was used for low-altitude operations, and this aircraft might be a helicopter.

After Chu Hedong sent someone to drive the plane out, Xiao Zhenlei knew at a glance that his guess was correct, this was indeed a helicopter.

Xiao Zhenlei pointed to the helicopter that had just been separated and said, "This ??????."

Chu Hedong introduced with a smile: "President, this is the newly developed propeller plane I said, we call it a helicopter!" It can take off and land on the spot, and its outstanding feature is that it can do low-altitude (several meters above the ground), low-speed (starting from hovering) and maneuvering in the direction of the nose, especially it can take off and land vertically in a small area. These characteristics make it have a wide range of uses and development prospects. In the military aspect, it can be widely used in ground attack, airborne landing, weapons delivery, logistics support, battlefield rescue, reconnaissance and patrol, command and control, communication and liaison, anti-submarine mine clearance, which is its advantages, it also has disadvantages, the disadvantage is that the current helicopter is relative to the aircraft, the vibration and noise are higher, the maintenance and overhaul workload is larger, the use cost is higher, the speed is lower, and the range is shorter. And this one is a gunship, you see it's narrow and long."

Helicopters can also be used for civilian purposes, short-distance transportation, medical aid, disaster relief and life-saving, emergency rescue, hoisting equipment, geological exploration, forest protection and fire extinguishing, etc.

Helicopter gunships can be divided into two categories: special-purpose and multi-purpose. The special type has a narrow and long fuselage and strong combat capability; In addition to being used to carry out attack missions, the multi-purpose type can also be used for transportation, landing and other tasks.

Chu Hedong also introduced: "The armed helicopter can be used to attack point or surface targets on the ground, surface and air, soft targets or hard targets. These include tanks, armored vehicles, radar stations, artillery positions, communications hubs, forward posts, improvised fortifications, beachheads, surface ships, underwater submarines, ground living forces, and low-flying targets. It can be said that any enemy target can be attacked as long as the firepower can be effective.

It can take off and land in the field without any preparation, can hover stably in the air, is not restricted by terrain and features, and can quickly change the route, flight altitude, speed, and attitude, so it can quickly concentrate or deploy at any designated place in the theater of operations, and can choose a favorable location or state to attack the enemy or make maneuvers to evade, which is incomparable with any other ground and air weapons and equipment. Although fixed-wing aircraft far exceed helicopters in flight altitude, speed, and weight, they depend on airports for take-off and landing; The construction period of the airport is long and the cost is high!

It also has a sudden aggressiveness, it can fly at very low altitudes, which is not easy to detect by enemy forces, and this fixed-wing aircraft can be easily detected when flying at high altitudes.

In addition, it can also carry out repeated attacks on key targets from all directions at the required time, and the helicopter gunship has the speed of time and the high mobility of flying over ground obstacles in space relative to various weapons on the ground, and can quickly concentrate, maneuver and fight in designated places, and skillfully move on the entire battlefield; Different weapons can be used to repeatedly attack various targets in front and depth, from all directions and angles. Helicopter gunships make full use of the refueling and ammunition loading points close to the front line to replenish in a timely manner and carry out sustained aerial fire attacks on the enemy, which can often achieve good combat results. Even in the course of combat development, in the event of an unfavorable situation, the helicopter gunship can quickly retreat at any time.

At the same time, it can be used in tandem with other ground forces, and we have found it to be particularly effective against enemy tanks, armoured vehicles, pillboxes and bunkers.

And it can also be used by surface ships and underwater submarines, for example, surface ships that are not equipped with anti-aircraft weapons will definitely be unlucky to encounter it, it has a special advantage in anti-submarine ??????".

In fact, what Chu Hedong said, Xiao Zhenlei knew it, but now listening to Chu Hedong's introduction, he was inconvenient to interrupt, and after Chu Hedong's introduction, Xiao Zhenlei said: "How long has this armed helicopter been successfully developed?" How effective was the test flight? ”

"It's been a month, and now we've built two, and we're testing various combat performances, while also collecting its shortcomings," Chu Hedong said.

Xiao Zhenlei smiled: "This is very good, I think this armed helicopter is very good, if you can find a way to overcome some of its weaknesses, you can consider letting the military purchase a batch of equipment troops, if you have the opportunity, see if it can be used in actual combat, let the actual combat test his combat ability!" ”

Chu Hedong hurriedly said: "Clearly, I understand what the president means, we will overcome all kinds of difficulties and make the manufacturing technology and combat performance of these two fighters reach a mature state as soon as possible, and we will never disappoint the president's hopes!" (To be continued......)