roccoschili Page 381
Page 381
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"This plan can be implemented by the Harbin Aircraft Factory of the Aviation Industry Bureau in the future," Duan Zhijun said. "At present, what is conceivable is to develop three special types of aircraft based on the Tu-4 bomber as the basic platform. The first one is on the back of the Tu-4 Install a large radar so that an aircraft flying over the sea can monitor a large area of sea and airspace.”
"The second type of aircraft is an electronic reconnaissance aircraft. We shot down a B-29 reconnaissance electronic reconnaissance aircraft in North Korea and conducted research. The Tu-4 electronic reconnaissance aircraft was transformed from it."
"The third type of special aircraft based on Tu-4 is called anti-submarine and maritime patrol aircraft." Duan Zhijun looked at Tang Hua, who asked him to continue.
"The basic purpose of this aircraft is to detect, discover, track and attack submarines at sea. At the same time, it is also a reconnaissance aircraft that can detect surface ships. Some special equipment of this aircraft...may need to be combined with Soviet negotiations."
Tang Hua: "HNA's fighter and bomber divisions are actually equipped with the same equipment as the Air Force, and only need to make some adjustments for maritime operations. In the future, HNA's two types of equipment may continue to maintain the same type as the Air Force. But the three special types mentioned above are unique to Hainan Airlines. Moreover, they are also models that are crucial to maritime operations."
"There's another thing. It's still the same old saying, you have to eat every bite... It takes about three to five years for these special planes to be developed or modified to be equipped with troops."
Chapter 8, the early warning aircraft is the old man
The Hangzhou (Nanjing) Radar Institute can now use some Soviet parts to build shipboard radars.
The part of the imported parts from the Soviet Union was not because the technical content was too high, but because the small factories could not manufacture them, so they had to be manufactured by large mechanical/electromechanical power plants, and the domestically imported factories had not yet been completed and put into production.
In fact, the domestic self-made devices now have high technical content: in order to adapt to the stability system of the ship's movement and the marine environment, the beam pointing calibration system, and the course stabilization system.Also came up with the sea clutter suppression device - the benefits of a step ahead of the electronics industry.
But to come up with a large-scale airborne search radar for early warning aircraft, we have to make another leap forward.
Both early warning aircraft and warships will dangle, and the beam pointing calibration system must be required.The difference is that the plane shakes much more than a warship.In addition, the way of shaking is also different. Relatively speaking, warships vibrate at low frequency, while aircraft vibrate at high frequency.When the radars for the Tu-2 and Tu-4 special bombers were being developed, the Hangzhou Radar Institute was overwhelmed by this problem, and a telegram was sent to Beijing for help in two or three days.
Another challenge is to not only make a large-scale radar with a relatively long detection distance, but also limit the volume and weight, at least it must be put into a large plate.At that time, I am afraid that there will be no suitable Soviet parts, and I will have to make my own from scratch.
When it comes to large plates, there is another small problem that must be solved: ——Large-diameter dish-shaped glass fiber reinforced plastic devices, it seems that technical research is also required.What are made now are all small cone-shaped glass fiber reinforced plastic covers.
But now that the naval strategy has determined to get rid of the near-shore and gradually go out, let's grit our teeth and make a sprint.Even if it takes five years to complete, it will still be one step ahead of the opponent.
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"We plan to call this aircraft an early warning aircraft.... No, no, no, it's not a radar aircraft. I don't like the name radar aircraft..."
Tang Hua thought, if the name was changed to a clumsy name that he was unfamiliar with, it would be uncomfortable to say.
"To be honest, most military combat aircraft may be equipped with radars in the future, but some are large and some are small, so the name radar aircraft cannot accurately describe its characteristics."
Dun Xingyun: "So, this early warning aircraft is equipped with a large radar, which is larger than the radars installed on Tu-2 and Tu-4 special bombers."
Duan Zhijun: "In addition to being larger and having a longer detection distance, the radar on the early warning aircraft scans 360° omnidirectionally. Except for a small blind spot in the vertical tail, everything else can be detected. And Figure-2 and Figure-4 I remember the airborne radar is a sector, and not too big, about 20 degrees left and right."
Xiao Jinguang, Dun Xingyun, and Luo Shunchu looked at the small model in front of them.
"Then the radar of this plane is really powerful."
Duan Zhijun: "In addition to installing large-scale radars, the early warning aircraft also has air command functions. We plan to set up 4 to 6 air commander seats on the early warning aircraft, as well as a complete radio communication system. When the radar detects enemy air targets, The early warning aircraft can command our nearby fighter jets to intercept, just like relying on land-based radar stations to guide air combat on land."
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United States, Grumman Corporation.
"First of all, I need to make a statement on behalf of the aviation boss: the Navy has spent too much budget on the next generation of carrier-based fighter jets, and your Grumman company has also taken the bulk. So the Navy is currently spending on updating other carrier-based aircraft It is not very sufficient, and the project must strictly control costs."
The deputy technical director of the U.S. Naval Air Corps discussed with the CTO and project chief engineer the launch of the carrier-based early warning aircraft project in Grumman.
Grumman appointed Laswell Jackson, the project chief engineer responsible for the early warning aircraft: "The early warning aircraft is much more complex and expensive than fighter jets, Colonel. If the cost needs to be strictly controlled, then it may not achieve the expected performance."
Deputy director: "I want to know what plans you have for controlling costs."
Jackson: "First of all, it is absolutely impossible to re-develop an airframe for it. The output of the early warning aircraft is too small. If a new airframe platform is developed, both the research and development costs and the follow-up procurement costs will be unbelievably high. If you need to reduce costs, I suggest using C -1 airframe to carry radar and other equipment."
"Is that the kind of small transport aircraft converted from the S-2 anti-submarine aircraft?"
"Exactly. With the radar installed, the maximum flight speed may be slightly less than 240 mph, the cruising speed is 160 mph, and the endurance is 6 hours and 50 minutes."
The deputy director frowned. "240 mph is too slow. It's crawling."
Jackson: "If you ditch the AN/APS-82 radar and use a smaller airborne search radar, then the speed of the aircraft can be increased to 260 mph, and the range will be slightly increased."
Deputy Director: "No! AN/APS-82 is a must. Only it can achieve a maximum detection range of 250 nautical miles. If equipped with a small airborne radar, we don't need to develop a new AWACS, AD5W will do. We will eliminate it , in order to obtain greater radar and air command capabilities."
After the end of World War II, the U.S. Navy has developed three prototype early warning aircraft: AD3W, AD4W and AD5W.They are all single-engine carrier-based aircraft, and they look similar. The radar is installed in the front of the belly, and the aircraft looks like a big tumor on the chin.
This kind of early warning aircraft is ugly and not easy to use, and the radar can't do much because of the installation location.In addition to the pilot, a single-engine carrier-based aircraft can only deploy at most two radar operators, and there is no other place to install communication and command equipment.
Hearing the deputy director's words, Jackson spread his hands: "Then we must accept the low speed of the aircraft. If the Navy has no objection, I will design the first radar layout within six months, conduct wind tunnel tests and structural strength verification. "
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While Grumman's designers were still choosing from several large-scale radar installation plans they had conceived, Tang Hua and Duan Zhijun had already directly designated the "big plate above their heads" radar installation plan for early warning aircraft.
However, China's advantage is that it is developing in the right direction, and the United States - they have already produced the AN/APS-82 radar.
In the conference room, Dun Xingyun had been thinking about the problem, and now he thought of a clue: "In the air battles after that, the early warning aircraft is the old man."
Luo Shunchu: "Yes, that's true. The shooting down of an early warning aircraft in an air battle means that the battle has been won. Each side must make appropriate deployments to complete the established missions and protect the safety of its own early warning aircraft."
Dun Xingyun: "Also, if the radar of the early warning aircraft can reach a detection distance of three to four hundred kilometers when detecting warships, then we can grasp the movement of the US fleet from a long distance."
Tang Hua: "The prototype test of the radar has not yet started, but the detection range of large and medium-sized warships on the sea will be a little longer than the detection distance of fighter jets. Therefore, early warning aircraft and electronic reconnaissance aircraft are key equipment for anti-intervention operations. After the early warning aircraft detects the enemy fleet, if we win the battle for air supremacy or maintain a balance of power, then whether it is bombers, surface ships or submarines can participate in the attack on the aircraft carrier."
Xiao Jinguang pointed to the Tu-4 early warning aircraft and asked another question: "Can this type of aircraft be used on land?"
Tang Hua: "Yes, in the southwestern and northwest regions where the ground radar stations are not well established, early warning aircraft can replace the role of radar stations in land air combat. In addition...we also have a plan for early warning aircraft to support land warfare, which requires the development of new radar."
Xiao Jinguang: "Ah, then this is common equipment for both the Air Force and Hainan Airlines."
Tang Hua: "... Ladies and gentlemen, these are the current equipment developments in the aviation sector. Next, let's take a look at the transformation plan of several types of destroyers?"
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It took only one month for the ship design to make the transformation plan, but the progress was quite fast. After all, there was a CAD software with original functions as an assistant.
Now the rough modification design of the Fletcher class and Keeling class has come out.
One of Killing's three twin 127mm turrets was removed, mainly to reduce weight and lower the center of gravity.A 37mm twin-mounted anti-aircraft gun was installed in the original turret position.
The two five-unit 533mm torpedo launch tubes are removed, and the space left behind by the launch tube and the torpedo warehouse is installed with a Hongqi-2/4 air defense missile system, and the double-unit inclined launcher plus a 24-round Ammunition Depot.
The position of the front torpedo tube is equipped with 2 quadruple anti-ship missile launchers.
The mast needs to be replaced with a new one, which is more complicated and heavier than the original mast. It needs to install an air search radar, a sea/low-altitude search radar and a gun sight radar.So a turret had to be removed.
Overall it's just minor surgery.
Tang Hua has now prepared the draft for the third phase of modernization: the rear main gun is also removed, and the helicopter take-off and landing platform and a single hangar are installed; At that time, the new anti-aircraft missile replacing HQ-4 should be smaller than HQ-2/4.The anti-ship missiles in the middle remain unchanged, and then Keeling becomes a ship that can be used for both anti-submarine and anti-ship, and the air defense is also sufficient for self-defense.