Half an hour later, the pilot on the Q400 drove the plane to the designated area and the predetermined altitude, and then also opened the tail hatch and parachuted.

The pilot was still in contact with the ground command center after the parachute was successfully launched, and the ground personnel then took over the aircraft through the remote control device.

A few minutes later, the plane also swooped down and landed in the middle of the desert, and suddenly a huge cloud of smoke and dust rolled up on the ground.

The photographer on the accompanying plane also recorded this scene completely and clearly at this time, and the camera in the cabin also clearly recorded the situation in the cabin when the plane crashed.

In order to prevent the experiment from catching and exploding, the plane had very little fuel on board, and flame retardants were added to the fuel.

Dozens of minutes later, Yang Jie and others also arrived at the crash site a few kilometers away by vehicle.

The Q400 was tilted on its side in the sand, the entire fuselage was broken into several pieces, and the wreckage fell to the ground, looking very miserable.

At this time, the technicians also took pictures of the Q400, and then began to take out the data equipment and dummy in the wreckage.

Yang Jie saw that the fuselage of the Q400 was broken into several pieces, and he also said to Dong Bidong: "If the forced landing is not successful, the probability of survival of the crew on the passenger plane is really small." ”

Dong Bidong opened his mouth and said: "Boss, the strength of the fuselage of this aircraft is obviously not enough, we will strengthen the strength of the fuselage next......"

Yang Jie shook his head: "The survival rate of passengers in the hard landing method is still not guaranteed, and we must re-develop a set of anti-crash technology for aircraft." ”

"Boss, what do you mean?"

"In order to maximize the chances of survival for passengers, it is necessary to develop an overall parachute landing system for passenger aircraft. ”

Yang Jie opened his mouth and said.

"Honey, do you have any good ideas?"

Natasha looked at Yang Jie expectantly.

Yang Jie smiled, "It's not a particularly new idea, in the 20s of the last century, a Soviet inventor Greb Kotlnikov was the first to put forward the idea of a detachable cabin, he is also the inventor of the world's first backpack parachute, and there are cases of small aircraft installing parachutes to successfully save pilots." Then it is also feasible for us to conduct R&D in this area. ”

"Mine is to use the current reloaded airdrop technology and some aerospace technology on the civilian airliner, in case of an air crash, the passenger plane can not be forced to land successfully, the use of explosive bolts and explosion separation care about the wing and the cargo compartment below, which can greatly reduce the weight of the cabin, the parachute equipped with the above uses a large parachute used in the heavy airdrop, which can greatly slow down the speed and avoid casualties in take-off and landing accidents. ”

"In addition, if it is a large passenger aircraft, the cabin can be divided into several sections at a critical moment, and each section can be equipped with a parachute. ”

Yang Jie said: "Now the reloading airdrop technology has realized a parachute that can drop more than 20 tons of heavy equipment, which is technically feasible. "Peerless Tang Gate fo

"But this kind of technology is not cheap, is it?"

Natasha asked.

"It's not cheap, because it requires a comprehensive redesign of the passenger aircraft, and a lot of technical verification is required in the middle, and the money spent is no different from the redesign, development and manufacturing of a passenger aircraft, and the passenger plane is more expensive, because this kind of large parachute is not cheap, one is almost five or six hundred thousand, and a set of devices to control explosion separation and parachute control are added. ”

Yang Jie said: "But this is the last resort to save the lives of passenger plane passengers, if a parachute is installed on a commercial airliner, it will save hundreds of lives in the event of an emergency, that is to accumulate virtue and do good, and the money is worth it." ”

Natasha glanced at Yang Jie with a smile, "If you don't spend this money, wouldn't it be better to donate it to charity?"

Yang Jie said with a smile: "Nowadays, many people do charity and think that it is enough to donate money directly, many of them belong to charity, in Buddhism this is just financial charity, monks practice more dharma, mainly to preach the dharma, and the universal sentient beings belong to the dharma, and what I do is to use technical means to save people, which is also a kind of dharma, and it is also a matter of accumulating merits." ”

Natasha glanced at Yang Jie, "Then what can I do about this?"

"Leave these things to your husband and me, this matter may take a long time, maybe ten years This set of technology may not be mature. ”

Although more and more small aircraft are now equipped with complete parachutes, complete parachutes are increasingly becoming the standard configuration of new models, and parachute systems have saved the lives of many pilots and passengers.

But it's very difficult to put this system on a large airliner.

To land a Boeing 747 with 500 passengers on board, the plane would need to be equipped with at least 21 giant parachutes, each the size of a football field. The second is that in the process of flight, the sudden opening of the parachute will greatly increase the drag of the aircraft, causing the aircraft to stall and lose the original ability to taxi in the air, and most of the air disasters occur when the passenger plane takes off and lands, and the parachute is opened in this state not only can not save the aircraft, but will hinder the evacuation of the personnel in the aircraft, increasing the difficulty of rescue.

More than 100 tons of aircraft in the abandonment of wings, tail, engine, there is about forty or fifty tons of weight, such weight corresponding to the size of the parachute area should reach 6,000 to 10,000 square meters, even larger than a regular football field area, even if the parachute is made of very light and tough composite materials, such a large parachute weight and volume is also very large, weight increased fuel consumption, occupied space, placed position, Whether it will have an impact on the existing airborne system is a key question that designers and developers have to think about.

From a technical point of view, the "separability" of the separable cabin structure will weaken the integrity of the aircraft structure, when the cabin and cockpit become two independent separable sections, it is obvious that the aircraft structure will change from one whole to multiple parts, which will greatly affect the transfer and action mode of the aircraft load, and then affect the overall design of the aircraft.

The separable design will pose a great challenge to the connection mode and strength between the cabin and the cockpit, how to ensure the stability and separability of the connection structure will be a big problem, and the connection structure and control system used to ensure the connection between the cockpit and the cockpit will be quite complex and cumbersome, and the additional weight of this series of "separable" cannot provide effective load for aircraft operation, and will eventually greatly increase the maintenance cost, which is borne by the airline.

Another is that due to the uncontrollable nature of the cabin after separation, there is no way to effectively predict the impact after its landing, such as separation over densely populated areas, the cabin may collide with buildings or residential areas, and its danger level will cause social disturbances, economic losses, casualties and other problems, and even if it is a large passenger aircraft, even if it is successfully "on its back" If a passenger falls after landing, is trampled and injured, or even dies, maybe the insurance company will find various reasons to refuse to pay, and then it will be a long investigation and evidence collection, which may take ten or twenty years to reach a conclusion, which is also something that must be taken into account.

Statistics show that 82% of air crashes occur during take-off and landing. Whether these pilots will perform at the last moment is also a big question if there is an accident during the take-off and landing phases that cannot be saved and the cabin has to be separated from the fuselage.

No pilot will ever give up his responsibility as captain until the last moment, after all, the technology of separable modular cabins is still immature, and they are powerless to do anything if there is greater damage after performing this maneuver.

The aircraft is a complex system with thousands of components, and the use of a separable modular cabin is likely to further increase the complexity of the aircraft system, thereby placing higher requirements on the safety level of the entire aircraft, and also greatly increasing the design and manufacturing costs of the aircraft.

Even if it is created, whether the airline is willing to purchase it will be a big question mark, and it can be said that Yang Jie has picked a very difficult thing to do.