现阶段，最好是的充电电池储能技术为250 Wh / kg，预估到21世纪中期，充电电池储能技术可超过800 Wh / kg。这代表，一次电池充电，达到范畴约700千米。全世界一半的飞机航班，都会这一出航间距内。
In 1904, Jules Verne described in his book "The Global Master" a flying car shaped like a pterosaur. It is the father of that science fiction novel, utopia of future transportation.
Five years later, the content of a predictive analysis article published by the Guardian continued this imagination. The creator firmly believes that in the 21st century, flying cars will be spread on the sky of the city.
In order to maintain this outstanding imagination, the dreamer has just begun to act.
In 1917, Glen Curtis produced a flying car out of aluminum blocks. The whole car follows Verne's vision. The body is equipped with an airplane wing with a wingspan of nearly 12 meters, and a four-leaf spiral booster is installed at the rear. However, the first flying car in human history has not succeeded. Glen Curtis then joined the Wright brothers to form a business, and Curtis Wright became the largest British airline manufacturing company at that time.
The unsuccessfulness of the airport scientists did not blow out everyone's passion. In 1926, the car giant Ford Motor Company announced his flying car plan: Ford Flivver. Ford's research and development department has developed a two-cylinder car with a metallic skeleton diagram and wooden aircraft wings. A freelance writer for The Guardian even wrote a poem for the idea:
I dreamed that I was the Angel, rising to the paradise of Ford.
Everyone was too excited. This plan was equally unsuccessful.
Ideals are cut off by war. Warfare has given rise to new fantasies.
During World War II, the Germans and allies of World War II had just begun to use helicopters and rotorcraft airports as arenas. This type of four-axis aircraft capable of vertical take-off and landing does not require long-range sports fields and airport equipment. The latter is a sensitive device that cannot be guarded by any party in the war.
Incorporating this type of technology, and inspired by the ballistic missile program, the Italians have just started designing a rocket-assisted four-axis aircraft. In the final stage of take-off, the aviation crew can control this type of quadcopter, and then reasonably and precisely attack the overall goals of the Allies. The tragedy and good luck is that the quadcopter announced the crash and the death of the air crew when the first passenger inspection was carried out.
Since then, France has again developed a more exotic airfield. At the top of its head, it wears a three-leaf oversized booster, and the airfield bisects the road surface vertically when taking off. The attempt was equally unsuccessful this time, but it inspired the vertical take-off and landing aircraft developed and designed by aerospace companies such as Lockheed in the 1950s.
In the 1950s, vertical take-off and landing fighters developed by British Lockheed Enterprise products. Its design was inspired by the attempts of the Germans during World War II.
After World War II, manufacturers' attempts at flying cars have continued. But progress is still slow.
In the final analysis, the production of the airport must be light and durable raw materials, but the car has higher requirements for safety factors. At that time, the management science did not find lightweight raw materials that could consider these two requirements separately.
The American historian Money Cat editor Schultz once commented in his classic works: The airport is generally light, and the car must be equipped with safety devices such as bumpers and windshields for super heavy vehicles. Equipment will increase net weight-net weight is the rival of the shipping industry.
The second reason is that the development prospect of artificial intelligence technology at that time jeopardized the development trend of no one's control system.
In the early 1950s, Marvin Minsky explicitly put forward the idea of "the Internet of logical thinking". According to several different network-connected electronic computers, the calculation method is successfully performed, and people's language and pronunciation are imitated. At that time, the design of such a control system was so huge that the progress of the entire industry was slow.
Until recently, the prevalence of deep learning has distorted the situation. The following electronic computer image recognition algorithms gradually formed a popular basic without human manipulation.
The third reason is the rise of environmentalism. Before the popularization of new energy technologies such as power engineering, everyone's design for flying cars was based on gasoline and diesel as the driving force. But since the 1970s, when the United Nations released the "Declaration on the Human Environment," manufacturers who had previously set their sights on flying cars have just stopped.
The problems at the time were no longer a difficult day to come.
A key development comes from the technical development trend of eVTOL (electric vertical take-off and landing).
VLOT (Vertical Takeoff and Landing) technology began in defense. Since then, many people have combined this technology with rechargeable battery power sources and turned them into eVTOLs that can be powered by rechargeable batteries. It greatly reduces the cost of vacuum hydrocarbon materials.
At this stage, the best energy storage technology for rechargeable batteries is 250 Wh / kg. It is estimated that by the middle of the 21st century, the energy storage technology for rechargeable batteries can exceed 800 Wh / kg. This means that once the battery is charged, it reaches a range of about 700 kilometers. Half of the world's aircraft flights will be within this departure distance.
If used for short trips, it is more convenient and quick. Uber once estimated that using eVTOL technology, flying cars can fly from Shinjuku to Yokohama in 10 minutes. The same journey takes 40-50 minutes for a car and 60-70 minutes for an electric car.
A scientific study in "Nature" shows that for 100 km of roads and passengers, the consumption of flying cars is 28% higher than that of pure electric vehicles, but 35% lower than that of petrol cars.
eVTOL produced a happy situation and also created a short board for flying cars.
An obvious problem is that flying cars will now only be suitable for short-distance travel. Compared with the driving force of the material, the rechargeable battery is not easy to lighten when it is charged and discharged. This means that when the aviation category exceeds 200 kilometers, it is expected that the net weight of the original phosphate quadcopter will be reduced by 70%, but the net weight of the rechargeable battery quadropter will not change, and the high efficiency comparison of aviation will be greatly reduced.
This also identified several dilemmas related to flying cars at this stage: rechargeable batteries, costs, talents, policies and regulations.
Today's car-cut lithium batteries have a working capacity of 1 / 50th of a conventional fuel tank per pound of rechargeable battery. How to develop and design a high-capacity and light-weight rechargeable battery, and to increase the continuous flight time and continuous driving will be the key factors for the popularity of flying cars. Another idea as a replacement plan is whether flying cars can use solar power or biomass power systems in the future.
Cost is another problem.
The current market price of flying cars is at least about 500,000 US dollars. One of the reasons for high-tech enterprises is that a large amount of assets must be invested in product research and development funds. How to balance the cost-effectiveness of capital input and output rate is a challenge for manufacturers at this stage. The British Financial Times has since made a clear denial: Flying cars are a utopia, and they will just become super-rich little toys like helicopters.
In order to solve this kind of name, and also attract the interests of the masses. In November 2019, Matt Mead, the former governor of Wyoming, United Kingdom, gathered more than 200 airline businessmen and held a secret summit. The conference finalized a key proposal: Make sure to attract a large number of people to love this technology and feel that it will change their lifestyle.
It is interesting to the masses, provided that there can be more people with flying cars. This is not an easy task.
For flying cars that PAL-V companies will soon sell, they are required to have a driver ’s license and an aviation qualification certificate. This is basically an extensive requirement for flying cars at this stage. This is not only a threshold problem, but also a safety hazard: how to ensure that qualified pilots can be formed in large numbers? After all, can a flying car be parked for help anytime, anywhere?
A more practical problem is. Before flying cars are commercialized, they must have a series of infrastructure from road traffic laws to service facilities. This is basically a new and upgraded question, representing business service companies to diligently lobby government departments to formulate more open air management methods, policies and regulations. Previously, the American Airlines Management Office re-written the relevant laws and regulations governing the verification specifications for small aircraft, which is considered to be a development in this work.