Take Off My Aviation Era

　　 "Chief, I have to try it myself." Seeing Zhuang Jianye's joy, Lao Mou was unambiguous, and the head of the headquarters was determined.

　　 Just now, Lao Mou has explained the subversive role of the "bearingless helicopter hub" very thoroughly.

　　Different from traditional helicopter hubs, hydraulic cylinders and bearings are required to communicate with the helicopter flight control system to realize the lateral and longitudinal deflection of the blades, thereby realizing the steering of the helicopter.

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　　 bearingless helicopter hub completely abandons this complicated mechanical structure, adopts two different composite materials, and realizes the control of helicopter blades with the flexible rotation force of the material itself and the liquid damper.

The principle of 　　 is similar to a rubber band with toughness. After it is strengthened, it can automatically return to its original shape after releasing it.

　　 Of course, the composite material on the helicopter hub is not as simple as rubber bands, but the basic principle is similar. It uses the flexible resilience of the material itself to complete the control transmission and recovery.

　　 With such superimposition and repetition, the helicopter hub can more sensitively accept the control commands issued by the pilot, and at the same time, it can quickly return to the original state under the action of the material itself, or stabilize in the pilot's continuous state.

　　 In short, he belongs to the kind of well-behaved boxer who can be salty and sweet, and can satisfy any posture he wants. Even if the pilot is rude or violent, he can hold back joyfully.

In contrast, traditional hydraulic bearing mechanical propeller hubs are not so considerate. Sometimes the pilot sticks up, and the aircraft always takes a second or two to respond. The same is true if you want to resume level flight, except for steady control. Outside of the rod, a slight downward pressure balance action must be taken, otherwise the hydraulic rod and bearing of the propeller hub will always not respond in time, and only an artificial intervention can be exerted.

This operation puts high demands on the pilot’s requirements. At least there must be a one to two second advance. Otherwise, the helicopter is sluggish for a second, and it is prone to unpredictable problems, especially on the battlefield. Because within a few seconds, the enemy's missiles have been hit.

　　 Pilots need to advance the propeller hubs of traditional hydraulic bearing helicopters, not to mention ground crews. With hydraulic pressure and bearings, it means the mechanical structure is complicated, and the mechanical structure means complicated maintenance.

　　 In fact, it is true, the hinges on the propeller blades, the bearings on the hinges, the hydraulic rods on the bearings, the hydraulic rods are connected to the bearings on the main frame of the hub...

Each item must be checked, each item must be added with special lubricants, and each item must be guaranteed to be foolproof. However, what makes the ground crew crazy is that the mechanical structure inside each hydraulic bearing mechanical hub is the same as a honeycomb. Let the intensive phobia patient directly numb the scalp and pass out.

　　 So this propeller hub is not only troublesome for the manufacturing company, but also a nightmare for the ground crew.

Of course, this is not the most important thing. The key is where the weight of the hydraulic bearing mechanical hub itself is placed. Even if a lightweight titanium alloy is used, the overall weight is almost 600 kg, which is still well controlled. Yes, if it is a little bit worse, for example, in Russia, a large number of aluminum alloys and alloy steels are used, and the weight of the entire propeller hub will exceed 1 ton.

　　 But Lao Maozi solves the problem simply and rudely. Since the hub is heavy, increase the engine power and build a medium-sized helicopter with more people. For example, the Mi-17 is a typical representative of this idea.

The problem is that there are many types of turboshaft engines in Lao Maozi's hands. There is no need to worry about the problem of adaptation. But other countries are not so arrogant. Just imagine that a 4 ton helicopter has 600 kilograms of blades above its bare head. , Leaving other places with only a quota of about 3 tons, even if the helicopter designer is driven crazy and reluctant to make a helicopter, it will inevitably be regrettable in terms of performance.

　　 For example, when people are in the cabin, the belly of the plane cannot hang supplies.

　　 For another example, the modification potential of the aircraft is too small, and the adapted radar cannot be installed on the helicopter hub, so that the helicopter has higher battlefield awareness and so on...

However, all of this has become the past in the face of the "shaftless helicopter hub", and nothing else, in terms of ground handling alone, it is tantamount to great blessing, without the constraints of complicated bearings and dense hydraulic rods. The ground crew only needs to perform regular data monitoring on the composite material of the hub, and adjust the connection damper daily.

　　 The workload is only about 25% of the previous calculation, which not only allows the ground crew to spend more time on more critical maintenance, but also increases the helicopter's attendance rate by 10%.

　　 Don’t underestimate this 10 percentage point. In emergency operations, let alone 10 percentage points, it is 1 percentage point. It is possible to save the people and win the battlefield.

Not to mention weight reduction. Composite materials are originally lightweight materials. The bearings and two-thirds of the hydraulic rods are eliminated on the machine, and nearly 50% of the weight is lost at once. If the blades are also made of composite materials, The main reducer uses a piece gear-bearing integrated structure, the overall weight reduction effect will be more obvious.

　　 Hundreds of kilograms so much can be used as a load to realize the mixed transportation task of manned and hoisting a 4-ton helicopter, and it also greatly expands the helicopter's modification potential.

Regardless of other things, in the case of hybrid hoisting, the artillery units generally use this method of transportation, using traditional hydraulic rod bearing hubs and traditional cylindrical bearing integrated main reducers for 4-ton helicopters, although theoretically they can be hoisted through Type 86 122mm howitzer with special weight reduction treatment.

　　 The problem is that it’s okay to make a promotional video or make a product introduction display board. In fact, the real artillery simply doesn’t look down on it.

　　 The reason is very simple, there is no real combat value, because the 4 ton light helicopter can not carry the artillery and associated ammunition except for hoisting an artillery.

　　 can only throw down the old bachelor artillery~www.readwn.com~turn over to pick up artillery and ammunition; or two helicopters cooperate, one hoisting artillery, and the other carrying personnel and ammunition.

　　 However, the cost-effectiveness and maneuverability of this method are also poor, and it is easy to expose that the target is hit by the locality.

This is why in the early years the Ascendas Group’s “air pickup” helicopters disappeared after a brief flash in the airborne exercises when they hoisted artillery. The roots are here, and the tactics are not flexible enough, even the full range of large-caliber mortars. It is impossible to load the position, which makes the artillery feel very tasteless.

However, the 4 ton helicopter after technical improvements such as the "bearing-less helicopter hub" is different. Although it is also impossible to mix the type 86 122mm howitzer, it is a combination of the 86 type 120mm mortar with a total weight of 206 kg. Loading is still possible.

A five-person artillery squad sits in the cabin, a type 86 120mm mortar and a base number, a total of ten 120mm mortar rounds are mixed and hoisted under the belly of the plane, and then the improved helicopter is used to easily excite any dead angle to attack the enemy. Launched an unexpected fire raid.

Although the head of the headquarters is now leading the aerospace industry, he was baptized in the War of Liberation in his early years, and he was a warrior who had been bloodied in North Korea for three years. Of course, he knew what Lao Mou wanted to express. That is one sentence: this helicopter has extremely high tactical value !

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