259 Search and rescue from sea

The helicopter roared towards the target airspace.

On the way, Yang Mei told Chen Fei about the current situation one by one.

Generally speaking, after a pilot falls into the water, the things he carries will send a signal. Based on that signal, Beidou can locate him. The search and rescue team members only need to find the location of the signal and then find the pilot who falls into the water.

But He Longsheng’s problem is that he did not send any signal.

This is troublesome, no one can tell where the location is. In addition, today's winds and waves are high, his situation seems very dangerous.

Therefore, the superiors had to increase their search and rescue efforts repeatedly in order to find He Longsheng before dark.

There will likely be a storm tonight!

If you can't find the other person before dark, it will be troublesome!

Many people think that search and rescue at sea are simple, but in fact, search and rescue at sea is not easy. Back then, when something happened to our hero, our army dispatched more than 100,000 people, and at all costs, but in the end... let alone people, even the hero's corpse could not be found.

Search and rescue are divided into two parts: search and rescue.

Therefore, searching for He Longsheng is the top priority, and only after finding it can rescue be carried out.

However, the characteristics of the sea environment have brought many difficulties to search.

The ocean area is too large, and it can be hundreds of nautical miles. Ships or aircraft that are dozens of meters and a hundred meters long are like a grain of sand in a washbasin on the sea. It is extremely difficult to search, let alone people.

In such a large sea area, although the superiors sent more than ten helicopters and many rescue ships, the sea area that each helicopter needs to be responsible for is very huge!

The second difficulty is that the speed of transportation is too slow. Most of the search and rescue ships sent by superiors are small and medium-sized boats, with speeds generally around 30 knots. Large boats are slower. However, the oil, equipment and supplies carried by small boats are very limited, and they require large boats to be supplied. Large boats are equipped with more complete equipment and can carry and equip more comprehensive search equipment, such as sonar, radar, high-power communication equipment, etc. Therefore, large boats are usually used as rear supply and small speedboats as a combination of front and rear work search boats to organize searches. But no matter how they are used, they seem too slow in the face of time of competition.

Of course, helicopters were sent on it. Helicopters are indeed much faster than ships, but they also have the same disadvantages at sea. The oil and equipment they carry are more limited, and the climate at sea is more complex than land, so the search range is actually very limited.

The other one is the influence of sea conditions and currents. I was still here last night, but I disappeared when I woke up in the morning. I may float out for several nautical miles or even dozens of nautical miles in one night.

Let’s talk about rescue.

When you find someone, you should rescue him on the boat, but the sea is different from on land, with no support or anything stable. Large ships have extremely high sides and are inconvenient to climb. They can only be rescued through small boats, or suspended in the air.

In general, maritime search and rescue basically use several or dozens of large ships as motherships, each responsible for a small area. Small boats and planes rely on large ships to search continuously. The whole process is very difficult and difficult, and requires a lot of manpower and material resources!

But no matter how difficult it is, the superiors will try every means to find He Longsheng at all costs.

Chen Fei and his team's helicopter flew all the way to the water where the fighter planes entered the water.

The superiors know the location where the fighter enters the water because the fighter has been sending relevant data in time before falling into the sea.

But the problem is that He Longsheng ejected the parachuting before J-15 entered the sea, so He Longsheng's fall into the water is inconsistent with the fighter's fall into the sea.

When they arrived at the location where the fighter plane fell into the sea, the helicopter began to hover, and all the search and rescue team members began to search with telescopes.

Chen Fei was not busy searching.

He said to Yangmei: "Show me the tablet!"

Yangmei gave him the tablet.

Chen Fei clicked on the tablet, checked the specific coordinates of the fighter when it fell into the sea, and then looked at the weather data at that time.

Afterwards, he listened to the last call between He Longsheng and the command post. He Longsheng just said, "Dongya, my tail is shot, the fighter jet loses control, I am going to eject the parachuting!" After that, there was no news.

Chen Fei looked at the data transmitted back to the command post by the fighter jet at that time, including the altitude and speed of the fighter jet, as well as azimuth angle.

In Chen Fei's mind, formulas jumped out one after another, data after another were inserted into the formula, and then a large amount of mental calculation began!

After the fighter's speed, azimuth angle, height, gravity acceleration, and wind speed at that time were added one by one, Chen Fei roughly estimated the possible landing trajectory of the parachute, which could not be very accurate. Because it was mental arithmetic, he could only guess and conceal it, but Chen Fei knew that the gap should not be too big.

Soon, he made appropriate corrections based on his own experience, because there are some differences between the J-15's catapult system and the J-20's catapult system, such as power, angle, etc., and the difference is not big, but it still has some impact on the landing point. If the influence of wind power is included, it will be much bigger. These things are impossible for pilots to know!

Chen Fei quickly pointed a coordinate on the tablet, which should be where He Longsheng entered the water.

But the waves have been very large.

Therefore, Chen Fei had to count the flow rate and direction of sea water.

After roughly calculating, Chen Fei came to a conclusion that at this time, He Longsheng was likely to drift at 340 directions, ten nautical miles away.

But to be honest, Chen Fei dare not guarantee whether this estimate is correct or not, because all the data are estimation, and the calculation process is too complicated. Which data is slightly larger or smaller may have a huge impact on the result.

So, next, Chen Fei can only rely on his sixth sense!

call--

He breathed in a turbid breath and tried his best to calm his emotions. After that, he closed his eyes and his whole body quickly became quiet. The roar of the helicopter was automatically filtered out, and his inner world was quiet.

After about four or five seconds, he opened his eyes and his intuition told him that the answer should be correct.

"Tell them that the direction is 340, fly ten nautical miles forward!" Chen Fei said to Yangmei.

There is no doubt that Yangmei should be the one with the most authority on this helicopter, and she has the ability to directly issue orders.

After hearing this, Yang Mei did not hesitate at all and immediately ran over to the helicopter pilot and said, "The position is 340, ten nautical miles!"

"I understand, the location is 340, ten nautical miles!"

The helicopter pilot pulled up the helicopter and flew out.

After flying forward for a while, Chen Fei felt it carefully again. There was no feeling of uneasiness in his heart. On the contrary, he was only getting more and more excited, which showed that his intuition should be accurate and his calculations would probably not go wrong!

He began to pick up the telescope and search.

At this time, his vision had reached the eagle-eye level. If he was in the air, it would be fine if he looked at thirty kilometers. However, at this time it was at sea, the effect would be greatly reduced, but the effect would be better with a telescope.

The helicopter flew forward, and he followed the route he had calculated before and searched.

As the helicopter flew forward for seven miles, something seemed to be falling from the sea in Chen Fei's vision.

"Turn right about ten degrees and keep flying forward!" Chen Fei continued to observe and said to Yangmei.

Yangmei immediately shouted to the pilot: "Turn right ten degrees and keep flying forward!"
Chapter completed!