Siheyuan starts from a better life

Chapter 1146 Taking off
"Have you finished the inspection?" Lin Peng asked Wang Kai, who was sitting in the passenger seat, after he finished his own inspection.
"I've checked and everything is normal. The equipment is intact." Wang Kai put down the notebook in his hand and spoke.

"Then let's start the test according to the subjects." Lin Peng put on the helmet first, and so did Wang Kai.

"Tower, tower, the new aircraft is applying for taxiing, applying for taxiing tests." Guo Peng picked up the communication equipment to contact the tower.

"You can taxi, you can taxi." Soon the command came from the tower.

For new aircraft, check whether there are any problems with the structure of the aircraft under taxiing vibration conditions, whether all systems are working normally, whether the aircraft's brakes meet the requirements for take-off and landing, whether the brakes are effective when the engine thrust is maximum, whether the brakes are effective in emergency situations, how the aircraft controls turns during taxiing, whether it can maintain a straight line, whether any deviations can be corrected, and whether the aircraft's attitude control is normal after lifting the front wheels during high-speed taxiing.

Only when all these are gone and all the conditions for the first flight are met, can the first flight be carried out. Of course, accidents may occur sometimes, which requires the test pilot to be able to respond flexibly.

Especially during high-speed taxiing, if a problem is discovered while lifting the front wheel, then whether to apply emergency brakes or lift directly requires the test pilot to make a correct judgment.

There was an unexpected situation in aviation history where an airplane took off unexpectedly during a high-speed taxi.

In 1974, during a high-speed taxiing test, the American YF-16 aircraft produced lateral driving induced oscillations. The test pilot was quick-witted and pushed the throttle stick, causing the aircraft to take off and unexpectedly achieve its first flight.

In order to ensure that the aircraft does not run off the runway during ground taxiing, it is necessary to first set up marking points on the runway so that the test pilot can visually align with the runway position.

Engineer Wu also took these into consideration and notified the flight test station. Everything is fully prepared, so under normal circumstances, an unexpected takeoff will not occur during high-speed taxiing tests.

Lin Peng skillfully started the cockpit power and carefully checked the cockpit instruments. After the two turned on all the instruments, they looked at each other, and then Lin Peng started to start the plane.

"The plane started normally."

"Engine is running normally"

"issue."

As a command was issued, Lin Peng pushed the joystick, and the plane slowly began to operate. The huge plane started to move from fast to slow.

Seeing the plane start to take off, everyone held their breath and watched the plane running on the runway.

"Mr. Wu, the plane is starting to accelerate."

"Steady posture, steady speed."

………….

The plane taxied quite steadily and the calculated values ​​were basically normal. This was a good start and everyone present breathed a sigh of relief.

However, Mr. Wu became nervous because he knew that the two test pilots would soon release the brakes and let the plane taxi, which would be the most challenging part for the plane.

"This plane is good. It flies very smoothly without any vibration." Wang Kai said.

"Civil airliners emphasize comfort," Lin Peng said.

"When I retire, I will also fly this plane."

"Let's do it together." After saying that, the two smiled at each other. The test pilot tested the movements of the aircraft's control surfaces again. There were no problems with these, and the movements were all normal.

"Tower, tower, should we start taxiing?"

“Whether to carry out civilization?”

"We can start taxiing." The commander-in-chief, Mr. Wu, gave the order to start taxiing, and the two test pilots were now calm and ready.

The engine speed was slowly increasing, but of course it was still in slow motion. Now, two streams of hot flames were gushing out from the tail of the plane, seeming to deform the air and the ground. Of course, the thrust was not great at this time, only about one tenth of the maximum thrust. With the brakes locked, the plane would not run away.

The engine was working normally at this time, and the test pilot reported the situation from time to time.

Finally, the test pilot released the brakes and the plane began to slide forward slowly.

Seeing this, everyone was very excited. Wasn't Mr. Wu and the others present the same? This is our first independently developed passenger plane. Except for the engine, the rest is basically domestically produced.

The speed of this plane slowly increased to 50 kilometers per hour. If this speed were on the ground, a small car with wings would be able to take off.

Of course, this is still a low-speed glide, but the test pilot is still increasing the throttle, the glide speed is getting faster and faster, the sound of the engine is getting louder, and as the kinetic energy continues to increase, the wings begin to shake, constantly shaking up and down during the glide, and are about to spread their wings and take off.

Now the two of them wish they could fly directly, which is a bit too torturous. Unfortunately, they are currently conducting a gliding test, and it is still a low-speed glide, so it is impossible to fly.

After successfully completing the low-speed taxiing test, we continued with the medium-speed taxiing test.

However, during the medium-speed taxi, no one noticed that the taxiing distance seemed too long. Even the test pilots seemed to be immersed in this refreshing feeling. They did not notice the signs on the side of the runway. When they found something wrong, they realized that due to the excitement, the plane was not far from the end of the runway.

The most terrible thing is that now even the speed exceeds the range of medium-speed taxiing and has reached 180 kilometers per hour. Although there is still some distance from the take-off speed, it is already quite fast. There are less than 300 meters ahead to the end of the runway.

If you brake at this time, you may not be able to stop. If you fail, it will be troublesome. You may crash into the grass at the end of the runway and fall down. That will be troublesome.

"Mr. Wu, what should we do?" One of the engineers looked at Mr. Wu nervously.

Mr. Wu is also quite helpless now. What do you think this is?

"Mr. Wu, quickly give the order for them to take off! It will be too late if we are late!"

Mr. Wu didn't say anything at this time, but directly ordered the plane to speed up and take off!
The two people on the plane directly entered the take-off mode. The engine roared, and under the powerful thrust and the calm operation of the test pilot, the aircraft's trailing edge flaps and tail were deflected to the maximum angle. Finally, when there were about a hundred meters to the end of the runway, the front wheels lifted up, and then slid for dozens of meters. The plane finally left the ground and took off!

Looking at the shaky plane taking off, not only Mr. Wu breathed a sigh of relief, but everyone breathed a sigh of relief.

Mr. Wu knew that if there was a problem this time, it would probably take a long time to test fly the plane again, and the cost would be too high.

Civil aviation planes began to take off and military transport planes also began inspection. After giving some instructions, Mr. Wu came there and accompanied Chief Engineer Tang in the inspection.

(End of this chapter)