Conan: The Mechanic

"Which runway do we need to take?" Chiyu asked while controlling the joystick, looking at the gyroscope on the dashboard. "If it turns out we're heading off the runway at the end, that's going to be very difficult to deal with."

"There is a long runway in this direction, don't worry." Takamori Sadaji replied. "As long as it is cut diagonally from the coast, there is a long enough emergency main runway."

"Where is our current location?" Qianyu asked worriedly. "I don't know exactly where we are now, in case we drive in the wrong place..."

"I will contact the tower, don't worry," Takamori Sadaji turned over a notebook in his hand - this is different from the JAL manual he held in his hand before, it is completely his personal manual, which records the Far East All the details of the cargo plane's hydraulic-free landing. "All you have to do now is to stabilize the plane. I will re-intervene after reading the record... By the way, report the speed and altitude."

"Speed ​​270, height 210." Chiba replied.

"That's about the same." After Takamori Sadaji responded, he started to read the manual again.

"The speed of the plane may slow down, so be prepared," Takamori Sadaji said suddenly. "The good news is that the plane should be a little easier to handle."

"What are you going to do?" Qian Yu raised her eyebrows. "The plane might be bumpy in that case."

"Just put the landing gear down, don't worry," Saying this, Takamori Sadaji turned a handle. "Unlike those elements, the landing gear itself has a means of artificial gravity to lower the landing gear in addition to the hydraulic mode."

With that said, he has done several operations and finally pressed the button to lower the landing gear. "Hopefully the hydraulic pressure is almost gone."

"What do you mean?" Qian Yu was stunned.

"I hope there won't be a liquid lock--" Takamori Sadaji watched the landing gear lights come on one by one, and his face suddenly became extremely ugly. "Damn!"

On the dashboard, almost all the landing gear lights came on, except for one.

The nose gear lights of the plane below them did not come on.

"What's wrong?" Chiyu couldn't see what was going on, because he was busy dealing with the speed change and control mode change after the landing gear was lowered.

"The front landing gear was locked by the liquid lock," Takamori Sadaji said solemnly. "Now the nose landing gear can't be lowered."

"What should we do?" Qianyu asked again.

"I can't handle it." After being silent for a while, Takamori Sadaji sighed. "When you land later, I'll take care of it. You hide behind the plane and take your mates to hide behind. I think there should be some unsold seats there. Remember to put your safety Strap on and prepare for collision."

The landing gear is composed of two hydraulic sub-systems, A and B. The hydraulic pressure in the action cylinder of the landing gear is required to release the landing gear from the A system and give space to the landing gear. However, once the hydraulic oil of the A system is not released from the oil return line, but the closed valve stays in the action cylinder, the action cylinder will be stuck, and the landing gear cannot be slowly released in place by gravity. As for why the front landing gear and not the rear landing gear are not in place, I am afraid that the front landing gear itself is relatively light, and the rear landing gear is relatively heavy, so it is easier to complete the locking by gravity. (In flight technology, there is an operation of diving at a large angle and then pulling up, and throwing out the landing gear through centrifugal force + gravity. In this process, the front landing gear is basically always the most difficult to throw out, because this cargo It's so light that it's hard to swing into place and snap into place.)

Under the current conditions, the hydraulic oil of the two hydraulic systems of AB should have leaked out with the rupture of the tail, but obviously there is still a small part locked in the action cylinder and cannot be released - and this is completely impossible for them to deal with now. Case.

Because the normal response to this situation is to "repeatedly manipulate the flight spoiler to release the hydraulic pressure involved". But how are they going to operate the flight spoiler now that they have lost control?

Thinking of this, Takamori Sadaji's mouth twitched. "You continue to ensure a smooth flight first. I need to communicate with the flight attendant."

Since it is impossible to release the landing gear simply by gravity, maybe they need to use centrifugal force to throw out the landing gear, and the plane is very bumpy during this process, so it is necessary to communicate with the passengers in advance and ask them to fasten their seat belts. .

……

About two minutes later, Takamori Sadaji ended the communication with the flight attendant, and reluctantly picked up the radio phone-he wanted the flight attendant to do it for him, but the flight attendant told him that he should be a professional to explain. to reassure everyone.

"Everyone, I'm Sadaji Takamori, the DC-10 flight instructor currently flying the plane." Speaking of which, Sadaji Takamori took a breath and made his voice sound more mature and reliable. "As you may have felt ~www.readwn.com~ our aircraft has now lost its hydraulic system and cannot be controlled by conventional means, so we are currently piloting the aircraft using unconventional means in order to return to the New Chitose Airport. In order to make the flight of the aircraft more stable, we are going to use the gravity throw to try to release the landing gear. During this process, the aircraft will face quite severe turbulence. Therefore, we hope that all passengers can fasten their seat belts and take an anti-shock posture. As the most elite flight instructor class of DC-10, I have the confidence to lead everyone to create miracles, OVER."

After finishing speaking, Takamori Sadaji glanced at Chiba nervously—if it’s dangerous, I’m afraid this kid is the most dangerous—there are five seats in the cockpit of the DC-10, two for the driver and one for the driver. The random engineer seat, and two observer seats, but none of these seats Chiba can sit on now. As long as Chiba is sitting in any position, he has absolutely no way to reach the two throttle valves that are still available.

"You sit in the captain's seat first, and I'll maintain the stability of the flight." Takamori Sadaji said.

"Uh..." Qian Yu didn't look back, but only made a hesitant voice.

"Don't underestimate me, compared to you, I'm a professional." Sadaji Takamori snorted and said coldly. "And do you know how to do a gravity toss, little chick?"

"Wow—" Qian Yu let out a somewhat helpless cry. "Then you take over directly?"

"Well," Sitting in the passenger seat, Sadaji Takamori took over the throttle valve directly from Chiba's hand. "Sit down quickly, the flight situation after the gravity throw is over can be very complicated, you need to take me over as soon as I stabilize the situation, and then keep flying smoothly, I need to check the landing gear and plan the next One step flight plan.

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