Chapter 506

As soon as his voice was heard, FOSS sprang up from his seat, supported the driver's seat with one hand, and put himself close to the instrument display. Beckman quickly turned over to get out of the way. At the same time, he pointed to the flashing "223kw" number on the display. The first reaction was whether the instrument display was wrong.

But before he asked, Hugh wood, who was in the main driving position, said, "we had another in-depth inspection of the plane this morning. Except for the damaged part of the tail, everything is normal."

Before he finished speaking, Hugh wood leaned over and looked at the flickering degree. He frowned and turned his head to Fox: "Sir, is this the APU provided by Tengfei Airlines? It looks better than we thought

Hugh Wood said this with sincerity. As a pilot, he wanted to make the DC-10 fly again. Because of this, he had stronger requirements on APU performance than everyone else.

Because a powerful and reliable APU is not only the energy source of large aircraft ventilation, air conditioning, power, supercharging, hydraulic, engine starting and other supply systems, but also the main source of emergency power for large aircraft in emergency.

APU has played an important role in more than one aircraft crisis, making the aircraft land smoothly and creating several miraculous forced landing records.

As a senior pilot of a large airliner, Hugh wood certainly hopes that the stronger the APU performance, the better, because it can not only improve the environment and service quality of the airliner, but also be a magic weapon to protect the life of the airliner.

But what kind of APU has strong performance? Of course, the most intuitive is that the higher the power, the stronger the performance.

After all, the APU power cabin at the tail of the aircraft is so large. Previously, the APU produced by Honeywell could only provide 218 kW of power, which could not be maintained for a long time. Under normal circumstances, it could only achieve 196 kW of continuous power output.

Although it is enough for DC-10, compared with Boeing 747, the efficiency of APU is much weaker. After all, the APU equipped with Boeing 747 can achieve the secondary backup of the whole aircraft control system, but DC-10 can not fully connect all the backup with APU.

The reason for this is that the power of APU is insufficient. As a result, DC-10 can only connect the backup of hydraulic system, rudder control system, life support system and other main systems to APU, while the backup of other systems is connected to the battery carried by the aircraft.

In this way, the design of DC-10 is not only complex, once the main engine fails, the aircraft can not quickly switch back-up control, but needs to adjust several control switches to complete the start-up of all backup systems.

It's nothing at ordinary times, but in a fatal air accident, one button start, three button start and four button start are really not a matter of time, but a matter of life.

Because of this, it is impossible for Hugh wood to say that he does not envy the Boeing 747. For this reason, he also made suggestions to McDonnell Douglas. McDonnell Douglas also thinks that this aspect needs to be improved in order to reverse the public's image of poor safety of McDonnell Douglas.

The problem is that McDonnell Douglas wants to improve, but APU manufacturers like Honeywell, general motors and Rollo are sitting on the ground. If McDonnell Douglas wants APU, there's no problem. Let's pay a 15% premium.

So before Hugh wood and others drove the improved DC-10 to China, McDonnell Douglas was still bickering with an APU supplier. No one knew when an agreement would be reached.

Therefore, when Hugh wood saw the number of the display instrument, he was still very happy, because he found that the number of the display instrument could be raised again, because the control valve on Beckman's hand, the co pilot of the control APU, was not pushed to the end, which showed that the newly replaced APU still had a lot of spare power.

The fact that he didn't say anything didn't upset FOSS, because at this moment, he also noticed the connection between the valve on Beckman's hand and the degree on the instrument display. He was immediately surprised and asked, "hasn't it reached the maximum power yet?"

Beckman didn't answer. Instead, he looked at Hugh wood with inquiring eyes. Hugh wood pondered for a moment and immediately nodded: "push to the end!"

Hearing the words, Beckman pushed the valve down, and the number on the instrument display jumped up immediately, and soon it was fixed at 252kw.

……

"Oh, my God, does Hugh wood want to blow up the tail completely?"

The two McDonnell Douglas technicians who assisted master Ju and others in the installation, retreated to the distance and looked at the test, could not help but burst into a sudden heart when they listened to the piercing sound of APU operation.

Just now, the old mechanic, who looks like a farmer nearby, told them that instead of the low-power APU pulled from the Shanghai stock market assembly plant for MD-82 aircraft, it was the D-25 auxiliary power unit produced by Tengfei airlines.

After hearing this, the two McDonnell Douglas technicians almost didn't curse their mother directly. They were ready to turn back and dismantle it. However, they found that it was too late and Hugh wood had started. So they picked up the walkie talkie to inform Hugh wood to stop, because no one could guarantee that Chinese products would explode in the next moment.But before they could hear it, there was a sound of power increase at the tail of the plane. They were scared out of their faces. They quickly hid for a long time. Then they stopped. They were about to take a breath to stop Hugh wood when they saw the old mechanic named Ju smiling at them with disdain.

It made them both hurt and mad.

"Tell Hugh wood to stop and settle with the old man later. He'll be able to laugh later." The fat technician said angrily.

The technician wearing Toad's eyes quickly echoed: "yes, they didn't tell us until such a big thing was finished. I don't think they were kind-hearted."

Then he picked up the walkie talkie and was about to press the switch to speak. Then he heard the indisputable voice from FOSS: "is the APU installed just now only connected with the start interface of the engine?"

On hearing this, the two McDonnell Douglas technicians were stunned and said that they would not find any problems in the cabin, would they? The fat technician quickly explained, "yes, Mr. Fox, but let me explain..."

"I don't want to listen to your nonsense. Now I'll find the technical personnel of Tengfei airlines. Half an hour after the cabin closes the APU, I'll install all the interfaces connecting all the planes to the APU!"

When they heard this, they immediately straightened their eyes and looked at each other. They both saw a line of words in each other's eyes. Is my ear broken.

For several seconds, the two of them reacted and grasped the walkie talkie to figure out what was going on. Then they heard the walkie talkie ring again: "Oh, by the way, the interface of the standby system is also connected. En, that's all. Go, go, go!"

As soon as they heard it, they both went, go, go. What else can we say? Do it according to Mr. Fox's idea. Just at this time, the old mechanic surnamed Ju cast his proud eyes towards him again. But this time, the two McDonnell's technicians were not angry. The technician wearing toad mirror immediately returned with a brilliant smile, and then waved to master Ju and cried out eagerly: "Mr. Ju Just now, the test effect is good. Mr. FOSS hopes to make some adjustments to connect all the interfaces of the whole system and test the whole system. "