Chapter 305: Vertical takeoff and landing don't find me

All-electric propulsion is actually not a new concept.
In the past 20 to 30 years, many people have tried repeatedly.
An all-electric ship, commonly known as the integrated electric propulsion system of a ship, refers to a ship whose power system is based on an electric transmission device.
Up to now, all-electric propulsion has become the mainstream of naval development in developed countries. Among them, the DDG1000 destroyer and Burke 3 destroyer of a major country, the British 45 destroyer, the British Queen Elizabeth-class aircraft carrier, and the Dongying 25DD destroyer all use this technology. Huaxia is also ready to catch up.
Compared with the ancient mechanical propulsion, all-electric propulsion does have many advantages. This is the development trend of future ships.
Not just military ships. Including civilian ships will gradually adopt all-electric propulsion.
However, until today, all-electric propulsion technology is not fully mature.
From time to time, there are still some drawbacks.
In other words, it's an endless stream of minor problems, and it's annoying.
The DDG1000 destroyer of a large country is currently not in service due to various minor problems. It is still being improved.
The core of all-electric propulsion is the super-powered electric motor. Otherwise, the propeller cannot be pushed.
And the core of the core is the four words "super power".
Super power generator.
Super powerful electric motor.
Because the power is very large, there will be many small problems caused.
Large power and large current.
High power and high voltage.
Either way, it will have a huge impact on the entire circuit system.
The voltage of an ordinary household is 220 volts.
A general industrial motor is 380 volts.
But when used on warships, this voltage is definitely not enough.
If the voltage is too low, there is not enough power to push the heavy propeller to high speed.
Especially when sailing at full speed, the output power of the motor is very large.
How many knots is sailing at full speed?
At least 35 knots or more.
If there is a special purpose, it may be more than 40 knots.
This has very high requirements for the motor. Long-term high-load operation is definitely a severe test for the motor.
Motors of several thousand kilowatts, even tens of thousands of kilowatts, have extremely high requirements in all aspects.
Everyone understands the principle. But when it is done, it is different.
There are many tricks involved. The key is the manufacturing process and raw materials.
Especially the problem of raw materials. Slightly flawed, the result is unimaginable.
Since the 1980s, with the development of solid-state power components such as MOSFETs and IGBTs, high-power inverters have begun to be practical. International large-scale electromechanical companies such as Swiss ABB Group and French Alstom Group have begun to introduce inverter motors into the marine propulsion field (and household inverters). Similar to air conditioners, they can efficiently adjust output and reduce energy consumption).
ABB Group specializes in pod-type propulsion systems. The motor is installed in a freely rotating pod at the bottom of the hull, which can greatly improve the maneuverability of the ship, and can even perform difficult maneuvers such as in-situ steering. It is widely used in marine engineering. In fields such as ships and large drilling platforms, my country's marine surveillance ships have also introduced ABB's pod technology. The world's largest electric propulsion ship "Ocean Oasis" supertanker is equipped with three 20 MW (20,000 KW) ABB electric propulsion pods, allowing the 225,000-ton ship to reach a high speed of 22.6 knots.
However, for warships, a speed of 22.6 knots is obviously not enough. At least 30 knots or more.
The top speeds of modern destroyers and frigates are generally above 35 knots.
Alstom Group specializes in high-power propulsion motor technology in fixed propeller mode. The US "Zumwalt" class destroyer uses Alstom's 36 MW (36,000 kW) synchronous induction motor, and the British "Queen Elizabeth" Two sets of Alstom 40 MW (40,000 KW) synchronous induction motors are used.
This shows that the power of the motor is very scary. It is tens of thousands of KW at every turn.
In addition, the power variation range of the motor is also very large.
When cruising at low speeds, only a few hundred kW of power output may be sufficient.
But when sailing at high speed, the electric motor will burst out tens of thousands of KW.
The gap between the two may exceed one hundred times.
This is definitely a great test for the power adjustment of the motor!
"Are you in a hurry now?" Wang Bu'an asked.
"It's not very anxious." Pang Xihua said insincerely.
"Actually, you really don't need to worry."
"why?"
"Panshi 600 is already very fuel efficient."
"Right."
Pang Xihua nodded.
A major advantage of all-electric propulsion is fuel saving.
Why are all warships so keen on electric propulsion?
Mainly gas turbines or diesel engines consume too much fuel when sailing at low speeds. Very uneconomical.
As a result, some warships adopt a combination of low-power diesel engines and high-power gas turbines. When sailing at low speeds, use diesel engines as power. When sailing at high speed, the gas turbine is turned on. This saves fuel. The problem is that this combination occupies too much space and the layout is not ideal, which seriously affects combat effectiveness.
But the Rock 600 engine does not need to consume fuel at all! Directly decompose sea water and burn hydrogen.
From the perspective of fuel saving, all-electric propulsion is not necessary.
If the technology is mature, it can of course be used.
But the technology is not yet mature!
We can imagine that even a certain superpower hasn't gotten it done.
"The destroyers and frigates to be built now are prepared to use the Rock 600 as power." Pang Xihua said, "It is not necessary to use all-electric propulsion for the time being. But in the future, all-electric propulsion will be the mainstream after all! The layout of warships can be better arranged. , Will help improve defense."
"Give it another five years." Wang Bu'an said calmly, "After five years, it should be almost the same."
"Good. Five years is five years. If the technology is not mature after five years, then we will definitely come to bother you again. I hope you don't mind."
"I believe that in five years, mature all-electric propulsion technology will definitely be available."
"Okay. Thank you."
"Goodbye."
Pang Xihua said goodbye and left.
Suddenly, he turned back.
"By the way, did the people from the 406 Institute look for you?" He said thoughtfully.
"No." Wang Bu'an shook his head.
"They should come to you. Why didn't they come to you?"
"What do you want me for?"
"Vertical take-off and landing!"
"Oh."
Wang Bu'an said he understood.
The main subject of the 406 Institute is carrier-based aircraft.
Vertical take-off and landing has always been a key research direction of carrier-based aircraft. Especially when the ejection technology is not yet mature.
The W125 Penglai engine has no vertical take-off and landing function.
In other words, the 406 Institute cannot directly use the W125 engine as a model.
China’s vertical take-off and landing technology is mainly derived from the Polar Bear’s Yak 141 single-seat single-engine supersonic vertical take-off and landing fighter.
It is the world's first supersonic vertical take-off and landing fighter. Its design guiding ideology is the carrier-based interceptor and the sea (ground) attack aircraft. At the same time, it can become a shore-based air defense aircraft, which has broken many world records for vertical take-off and landing fighters. Better than the British Harrier fighter performance.
The vertical take-off and landing technology of the U.S. F-35 fighter is mainly from the British Harrier fighter. This is the product of Rolls-Royce.
Obviously, the foundation of Rolls-Royce is stronger than Jacques 141, and the opportunities are better.
Harrier fighters were once installed on a large scale and participated in the Falklands War.
The Jacques 141, only prototypes, has never been installed. Because of its untimely birth, the Soviet Union disintegrated.
In terms of performance parameters, it is more advanced than the Harrier fighter.
However, the biggest problem with polar bears is the reliability and stability of the engine, and then the problem of life.
They have never paid much attention to the issue of longevity. I think it will do. Anyway, when fighting, the survival time of an engine may be dozens of hours. Designing an engine that lasts tens of thousands of hours is a waste. The thinking of fighting nations is hard for others to understand.
"What do you mean?" Wang Bu'an asked knowingly.
"When you have time, study the vertical take-off and landing." Pang Xihua said.
"Sorry, there is no time for now."
"You have."
Pang Xihua pinned his hopes on Wang Bu'an.
After all, the performance of the W125 Penglai engine is really outstanding. It has caused a sensation in the entire aviation industry. UU reading www.uukanshu.com
Although China has strictly blocked relevant information, some big countries have noticed clues. They are currently looking for ways to obtain W125 manufacturing technology at all costs. Fortunately, China has set up the barrier of 220 Institute in advance. Flick a shot. Attracted the firepower.
Otherwise, I am afraid that Wang Bu'an at this moment will have long been a joke, and there will be no peace.
"I feel completely unnecessary." Wang Buyan shook his head and said.
"Why?" Pang Xihua frowned.
"W125 can already guarantee that the carrier-based aircraft takes off within 50 meters. The advantage of vertical take-off and landing is not outstanding."
"One more technical advantage, one more guarantee!"
"At the same time, it is more difficult to repair."
"..."
Pang Xihua wanted to speak but stopped.
Wang Buyan's statement is not wrong.
No matter what kind of mechanical equipment, the biggest fear is complexity.
The more complex, the greater the chance of error.
The more complex, the more difficult the maintenance.
The W125 engine was originally very easy to maintain.
As long as there is no violent external damage, it does not require disassembly and maintenance.
Usually, just wipe the dust and clean the periphery.
If you want to force a vertical takeoff and landing, it is tantamount to deliberately increasing a lot of variables. Deliberately increase the probability of failure.
Wang Buan didn't want to waste this time and energy.
Anyway, the W125 Penglai engine has samples.
Those of you who want to improve, do it yourself.
My Wang Bu'an will never continue to make changes. Unless you need more thrust.
Is a jet engine with more thrust required?
It can come out anytime.