Li Hai gave a key explanation of the communication protocol.
It's not because he suffered from the psychological shadow caused by a communication failure that almost caused a serious incident, but because communication is the most important part of any army's work, and it is also the aspect with the highest level of confidentiality.
When we listen to civil aviation land and air dialogue, we often hear the term - adjust the frequency to XXX. This kind of dialogue almost never occurs in the communication between military aircraft and the ground.
Before each flight, all communication channels are preset, which are roughly divided into six channels. Pilots are familiar with the communication protocol in advance and conduct communication dialogues with all parties according to the communication plan. In other words, the pilot not only does not know the communication frequency, but also cannot adjust the communication frequency.
The communication frequencies of military aircraft are classified as top secret information in countries around the world.
"The first wave channel takes off and lands, the second wave channel is for command, the third wave channel is the backup channel, and as for the fourth wave channel, you also know that this is the universal communication channel all over the world."
Li Hai noticed that the 6 channels in the communication protocol were marked as ship-aircraft protocol contact, which was extremely rare in other troops. In other words, the fighters of the 167th Independent Group can communicate with ships within the communication range through the 6-wave channel.
Previously, when Li Hai communicated with Long March Black Fish, they used the 6-wave channel.
The wave channel is the channel, and the wave number is the channel number, which is also the channel number.
In daily spoken language, most of them are directly called wave numbers, such as wave number 1, wave number 2.
It is common practice to use wave number 1 as the take-off and landing channel, which is equivalent to the channel used by civil aviation approach stations.
Zhao Feiyan and Zhan Yuntian are familiar with these situations because military helicopters use the same communication method.
Out of caution, Li Hai carefully studied the communication protocol with them to ensure that there were no omissions or errors.
"As mentioned before, the situation at the Forgotten Reef Airport is quite special. We cannot get command from the land-based command post after takeoff, so in fact the airport tower also takes into account the function of combat command. However, the same wave number cannot be used throughout the entire process, and must be strictly Follow the requirements. Use wave number one when taking off and landing, and use wave number two after leaving the take-off and landing controlled airspace." Li Hai emphasized.
He paused and said, "In the past, the 167th Independent Group rarely flew out of the three hundred kilometers radius of Forgotten Reef, so it rarely contacted the Air Force Southern Command Center. Now that the situation has changed, the Air Force Southern Command Center may receive Pass control if we are too far away from the site."
Zhan Yuntian nodded solemnly, "I understand, master, please rest assured."
"Okay, if there are no other questions, let's start on time." Li Hai said, "The results of this small assessment will be included in the comprehensive evaluation. You must take it seriously. Lao Zhan, follow me."
Li Hai brought Zhan Yuntian to the apron. An hour ago, Li Yuanchao's maintenance team had pulled No. 037 J-7EGGHS out of the hangar for pre-flight inspection, which was completed at this time.
When handing over the plane, Li Yuanchao handed over the handover order and said, "The paint on the nose landing gear is a little peeled off."
"Paint peeling off?" Li Hai was stunned, then walked over and lowered his head to check the nose landing gear.
The landing gear of the No. 037 J-7EGGHS has been strengthened. The aircraft once served as a carrier-based trainer for a period of time and was the only light trainer aircraft in the Flying Shark Force at that time. Many of the technologies tested on this airframe were later applied to the Seamount Eagle carrier-based training aircraft.
After Li Hai looked carefully, he found that a small area of paint on the support column of the nose landing gear had peeled off. He reached out and touched it gently, and it felt rough.
Zhan Yuntian said, "It doesn't matter if the paint peels off a little. The plane is not that delicate."
Li Yuanchao smiled and said, "Yes. I guess the manufacturer made the wrong material when painting the nose landing gear, but they should correct it soon. Except for the support column, the paint surface in other places is normal. I There’s data here.”
"That is to say, after the manufacturer completed the modification, other parts were painted with anti-corrosion materials that met the requirements of the Hainan Aviation Force, except for the front landing gear support column," Li Hai said.
Li Yuanchao nodded and said, "Yes, it will hardly affect the use. The performance indicators of the landing gear support column will not be affected by the paint. Moreover, the landing gear of this aircraft has been strengthened, which is much better than others."
"The temperature has been surprisingly high these days. It is normal for the paint to peel off if it is painted with high-temperature-resistant and anti-corrosion materials."
In the past, when there were fewer aircraft and more missions, such small problems were not a problem at all. Going back to the J-6 era, the aircraft did not have additional jets at all.
Of course it will not affect the use, otherwise Li Yuanchao would never hand over the aircraft.
There are so many examples of aircraft accidents in the history of world aviation, but none of them resulted in failure due to paint peeling off, causing metal fatigue or performance degradation of components.
Li Hai wiped his hands. His palms were sweaty and oily. He asked for a wet towel to wipe it with, then shook off his white labor protection gloves and put them on, and then signed his name on the handover form.
Zhan Yuntian boarded the front cabin, and Li Hai sat in the back cabin.
After confirming that the flight helmets of the two pilots were connected, confirming that the oxygen supply system was working normally, confirming that the communication system feedback was good, and confirming that the ejection seat was in good condition, Li Yuanchao asked his maintenance officers and soldiers to remove all ground support equipment.
Li Yuanchao said, "Vice Commander, we received a basic flight training support mission, so Dong Sanguai's combat software module was not loaded. Of course, no weapons and equipment were mounted, and the cannon magazine was empty."
"learn."
Li Hai nodded slightly. This is a standard procedure. Whatever level of support the aircraft maintenance team receives, they will follow the requirements. Whether live ammunition can be loaded, how much fuel should be added, etc. In short, it is what kind of standard the aircraft is required to meet. The maintenance team must meet the requirements before handing over the aircraft.
"Oh, the electronic warfare module has not changed and has always been available." Li Yuanchao smiled awkwardly and said, "We are not familiar with the combat module yet. Many functions can only be used in their original factory state. People from the manufacturer said that you may be more familiar."
Li Hai smiled and said, "I also know a little about it. Dongsanguai's combat module is very powerful, and I can't fully understand it without in-depth research. However, at present, Dongsanguai is mainly used for training, and it is enough to have basic combat capabilities."
Smiling, Li Yuanchao pointed to the communication panel and said, "The communication is preset, dial one tower, wave number two command, wave number three backup, wave number four universal, wave number six ship and aircraft coordination, the same communication plan."
"Understood." Li Hai answered dial 1 and called the tower, "Tower, check the three turns of the cave and request to slide out. Complete."
Li Yuanchao patted Li Hai on the shoulder, went down the boarding ladder, and then removed the boarding ladder. The ground conductor waved a green flag and gave a thumbs up. Li Hai signaled Zhan Yuntian to carry out the take-off procedures.
Zhan Yuntian closed the canopy, carefully pushed the throttle lever out, and taxied along the taxiway to the take-off position.
Li Yuanchao raised his hand to scrape his forehead, and a bunch of sweat came off, and said, "This is the oven, brothers, go back to the hangar and cool down."
The surface temperature climbed to 42 degrees Celsius, the highest temperature recorded at Forgotten Reef in ten years...
