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Chapter 1149 The real fourth generation machine

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    It was not only the army leader who accompanied the leader who was surprised, but other leaders and chiefs with military backgrounds who were also very surprised.

    There is no way, it¡¯s just that the noise control level demonstrated by 8max is really beyond the scope of everyone¡¯s cognition.

    What level is 85 decibels of external noise?

    ?That is, the volume produced by the traffic flowing back and forth on a busy road.

    ??To ordinary people, this volume will feel a bit noisy, but for a large helicopter equipped with a turboshaft engine, reducer, propeller hub and a maximum take-off weight of 14.8 tons, it is almost like scratching an itch.

    You should know that the prototype of the Z-8 helicopter of the same level, the French "Super Hornet" helicopter, has a volume outside the cabin of 108 decibels.

    Due to imperfect system integration, the imitation of the old Z-8 has poor noise control compared to the copied prototype, reaching 112 decibels, which is almost the same as the noise of the first-generation Z-5 helicopter.

    This is why the French "Super Hornet" helicopter is obviously a large maritime helicopter platform specially built by the French aviation industry for the French Navy. It should be converted into a modified platform for the domestic navy's excellent professional anti-submarine helicopters, but after being placed  , an important reason for becoming a mascot that can only be promoted to the outside world.

    The noise itself was too loud, and even if it integrated the most advanced airborne sonar detection equipment at the time, it was impossible to accurately search for the exact location of the submarine.

    Because the Z-8¡¯s three engines roar like this, the sonar operator still wants to hear the sound from the bottom of the sea?  The whole screen is filled with the vibrations of the helicopter itself!

    Accompanying the loud noise is violent vibration, and the vibration level is basically maintained at about 0.2 grams. In other words, if a fat man of 200 pounds takes off his clothes and sits on it, he can clearly see the fat on his body like water waves.  It keeps rolling up and down, left and right.

    Under such circumstances, what kind of precision detection instruments can withstand it?

    It is estimated that before any submarines were caught, the detection instruments fixed in the engine room were shaken apart.

    Based on this, even though the navy in the 1980s and 1990s had a platform of the same level as the "Sea King" helicopter, it did not transform into a classic carrier-based helicopter like the "Sea King" helicopter. This is the key reason.

    After that, the smaller Z-9 had to be chosen as a carrier-based helicopter to shoulder the task of formation aviation anti-submarine warfare. This was also the reason.

    Because the Z-9 prototype and the French "Dolphin" helicopter are third-generation helicopters, the noise outside the cabin is controlled at 95 decibels and can reach 85 decibels inside. Coupled with other special technical processing, airborne sonar detection can be used normally.  equipment.

    The imitation Z-9 inherits the noise reduction characteristics of the "Dolphin" helicopter very well, and this is why it is favored by the navy.

    In comparison, the Z-12 built by Ascendas Group is not as good as the Z-9 in this regard. The noise level outside the cabin ranges from 98 to 102 decibels, and the noise level inside the cabin is basically maintained at around 90 decibels.

    The vibration level is lower than that of the old straight 8, at 0.12 grams, but it is greater than the 0.1 gram of the straight 9, so it has a great impact on the detection accuracy of underwater acoustic equipment.

    Because of this, the Navy does not equip Z-12 in large quantities, but only purchases small quantities. Even so, the few Z-12s are still used by the Marine Corps, which shows that the Navy is not optimistic about the Z-12 being put on ships.

    There is no way to do this. The original development of the Z-12 was more about solving problems, and the consideration was not comprehensive. Some flaws are inevitable.

    However, it is different when it comes to the Zhi-8max. Since it is clear that this is a carrier-based helicopter for use by the navy, the combat environment and mission requirements of the navy must be considered. Therefore, noise reduction and shock reduction will inevitably become an important indicator to improve  .

    So this improvement will "perfect" a world advanced level.

    You must know that 85 decibels is just the noise level outside the cabin of the 8max, and there is only 60 decibels inside the cabin.

    ? 60 decibels, the sound of two people talking normally is at this level.

    This is almost negligible for a helicopter with complex mechanical structure, but what is the vibration level under this kind of noise?

    "0.05 grams!"

    Zhuang Jianye gave an extremely low number, which is twice as low as the vibration level of the Z-9 helicopter that is now commonly equipped in the navy.

    Compared with the old straight 8, it is several times lower.

    In other words, if a 200-pound fat man takes off his clothes and sits on it, it will be similar to sitting on a Boeing 737 or Airbus A320 passenger plane. Not only will his body not tremble, but he will also feel quite comfortable.

    ??This is for the navy¡¯s ocean-going formation

    ¡°This will undoubtedly be a huge boost to our future naval ocean-going formations!¡±

      Just when everyone, including the senior leaders, began to imagine the combat composition of the naval formation, Zhuang Jianye had already given the answer without hesitation. Not only that, Zhuang Jianye also further said: "As just said,  ¡ªThe biggest feature of the 8max is its quietness. However, in addition to being quiet, its space is also large enough.

    The passenger cabin of the current Zhi-8max premium VIP version is only 6.5 meters, but the real naval version is 7.06 meters long.  "

    As he spoke, Zhuang Jianye walked to the ordinary cabin in front and made a big circle gesture with his hands in the middle of the cabin: "So a 360-degree circular sea search radar will be set up below this position; and then a suspended active radar will be placed at this position.  Deep water sonar"

    Before he finished speaking, Zhuang Jianye walked through the crowd again, walked to two-thirds of the cabin, made a few strokes on the couch, then walked quickly to the back of the cabin, pointed to two locations and continued: "Here, install two rings.  Sonobuoy launcher, each device is equipped with 10 sonobuoys, and two sonobuoys can carry a total of 20 sonobuoys."

    After finishing speaking, he stepped back, pointing to a location behind the blocking door in the middle of the cabin and introducing: "This location can place the data processing computer and comprehensive communication equipment of the detection equipment. And here" Zhuang Jianye took another photo.  Outside the door: "It is the signal control and operation console. It can be set up with three seats, or it can be integrated into two seats. It depends on the situation.

    Finally, with the four light anti-submarine torpedoes and the retractable magnetic detector on the tail of the fuselage, as well as the 4.5 hours of endurance, its combat capability is no less than that of a small fixed-wing anti-submarine patrol aircraft.

    ¡°So only two or three Z-8max can provide quite beneficial anti-submarine warning and search for ocean-going ship formations"

    In the luxurious cabin of the Zhi-8max high-end VIP, Zhuang Jianye described for the leaders and others a comprehensive search, positioning and navigation system that included sea search radar, magnetic detectors, sonobuoys, active deep-water hoisting sonar, and light anti-submarine torpedoes.  The interior of an attacking integrated anti-submarine helicopter.

    It goes without saying that it is advanced. Not to mention other things, the load capacity of 4 light torpedoes alone is far more than the current Z-9, not to mention the 4.5 hours of battery life. The Ka-28 imported from Russia  Paper data is nothing more than that.

    But the problem is

    "Of course what you said is very tempting, but the requirements for the platform are extremely high. Are you sure that your Zhi-8max can do the job?" The military leader is an expert in the field of equipment. After hearing this, he frowned and said bluntly.  Ask questions.

    Zhuang Jianye responded very calmly: "Of course it can be done, because this Z-8max is a true fourth-generation aircraft!"

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