Erdan smirked, and knew that it was not so easy for him and Weiwei to be together. The Long March of thousands of miles is all walked out by people, climbing snowy mountains and crossing grasslands, no matter how difficult the process is, no matter how bumpy the road is, please believe that Li Erdan will never retreat.

"Let's start with a simple one, spiral landing." Erdan said that at this time, the helicopter rose to an altitude of nearly 300 meters.

If the helicopter flight aerobatic maneuver has five stars for the most difficult, then the "spiral lift" has three stars, which is somewhat difficult, but not too big. Otherwise, how can the second egg be simple. Cai Xiaolin can also play with this "simple" action, so he didn't express his position. Spiral lift, as the name suggests, is the helicopter ascending and descending in a circle, and the path can be analogous to a spring, or a thread.

As he spoke, Erdan made a move, one hand controlling the ailerons and lifting rocker, the other hand controlling the total pitch lever, and two feet controlling the tail rudder pedal to change the tail rotor pitch. The helicopter rotates and lands, which is mainly divided into two actions, one is to descend, through guò control zhì elevator, so that the propeller rotates slower, and the lift will naturally descend when the lift is small; The other is to rotate, control the tail rotor, so that the lateral force generated by the tail rotor and the torque generated by the top propeller are unbalanced, when the two are different in size, the helicopter can rotate forward and reverse. If the fuselage of the helicopter is tilted at an angle, it can also land in a spiral while flying.

With the action of the second egg, the helicopter really rotated, first keeping the altitude unchanged, and the fuselage rotated clockwise. When the speed of the tail rotor increases, the speed of the helicopter spins in place increases. From a distance, the helicopter looks like a dragonfly spinning in place. Of course, no matter how fast the helicopter turns, it is impossible for the engine to turn fast, and even the speed of the ballet dancer cannot be compared, that is, leisurely.

"Li Erdan, can you hurry up? Oh my God, it's so much fun. I decided, I was going to learn to fly a helicopter. Li Erdan, you have to teach me. Xiaoxiao exclaimed exaggeratedly, excited.

"Call my brother-in-law and teach." Two eggs.

"Don't scream, don't scream to death." Laugh and laugh.

"If you don't call me, I won't teach you." Two eggs.

Cai Xiaolin suddenly interjected, "Xiaoxiao, Brother Li doesn't teach you, Brother Cai can teach you." ”

Xiaoxiao frowned, "You won't let me teach me when you're your girlfriend, will you?" ”

"Well, you've guessed it." Cai Xiaolin.

"Hmph, no way. If you don't teach me, I'll find a professional master. Anyway, there are many institutions that train to fly helicopters. "Laugh.

Weiwei was much quieter, her hands were tightly clutching the seat belt, and she was a little dizzy when the fuselage was transferred, and she also said to Erdan, "Brother Erdan, I'm going to get airsick if I turn around faster." ”

I'm going to get faint motion sickness, so I have to do it!

"If you turn it the other way around, you won't be dizzy, which is called positive and negative cancellation." Erdan said, his hands were upside down again, and soon the helicopter that was turning clockwise became counterclockwise. When the propeller lift is reduced a little, the helicopter turns counterclockwise and descends, keeping the speed at one meter per second. It may be that the quality of the helicopter is not yet excellent, and the fuselage is somewhat shaken. After all, civilian helicopters cannot be compared with military ones. When Erdan learned to drive a "direct" gunship, he roared up and down, and the rotation and landing speed even reached three meters per second.

When the helicopter descended to a distance of ten meters from the water, Erdan let the helicopter climb up again, ready to perform the second show, volleying somersaults, with a difficulty coefficient of five stars, that is, very difficult.

Cai Xiaolin can't do this action, technology is one thing, and more because the helicopter can't do it, so he didn't want to let Erdan do it, so he said: "Brother Li, forget about this action!" My helicopter can't do this action, the quality is not good, and I accidentally fell into the sea, but it's not a joke. ”

Cai Xiaolin's worries are normal, according to the statement, if you want to complete this action, you can't do it without a special pilot, and it is rumored that only a few helicopters and very few pilots in the world can complete this action.

Erdan still grinned, and he was a little addicted again, "It's okay, I'll pay you a new one if I break it." Or you can ask me to give you acupuncture for free. ”

Acupuncture changed to a helicopter at a time, Cai Xiaolin made a lot of money, but he was unwilling to make this cheap. But Li Erdan insisted on doing it, Xiaoxiao also instigated Erdan to do it, and even threatened to beat Cai Xiaolin, so Erdan did this very difficult flight maneuver.

A helicopter somersault is similar to a human somersault, accelerating forward and then turning over in the air. Of course, the flexibility of a helicopter cannot be compared with that of a person, and its difficulty in operation is not at a level.

Erdan first pulled up the helicopter, this time it was not climbing on the spot, but pulling up while rushing forward, the speed of the helicopter became faster and faster, like a flood beast roaring forward, the nose tilt angle became larger and larger, 30 degrees, 60 degrees,......

Erdan's nerves and muscles all over his body are tense, his concentration is highly concentrated, and his hands and feet are not messy. Slightly frightened, he closed his eyes, leaned against the back of the chair, and his heartbeat couldn't help but accelerate. Laughing and exclaiming, his hands danced, and his two big eyes widened. Cai Xiaolin, who has always been calm, was not calm this time, and gasped several times, obviously nervous.

McDonnell Douglas is still pulling up, the speed is still accelerating, the angle is getting steeper and steeper, and the fuselage is shaking more and more, giving people the illusion that it may shatter at any time. As the angle increased, things that were not fixed in the cabin flew up, such as a pack of napkins in front of Cai Xiaolin and smashed into his face. In the same way, under the action of gravity and inertia, the person clings to the back of the chair, and the feet are involuntarily raised.

When the inclination angle of the helicopter reached a critical angle of 90 degrees, that is, when the nose was upright, Wei Xiaoxiao and Cai Xiaolin were so frightened that they screamed, and the helicopter turned upside down, and then turned a 360-degree "somersault" in the air. The process is extremely short, only a few seconds, and the person wearing the seat belt does not fly out, it feels like riding a roller coaster, but it is more exciting.

When turning over the somersault 180 degrees, the helicopter propeller is down, and the force transmitted to the helicopter is also downward, and at this time, the lateral force of the tail rotor and the torque of the propeller are a little unbalanced, and the helicopter looks like it is about to lose control of the rhythm, falling straight down! The second egg was in a hurry again, and the nose turned downwards and slowly pulled up, and finally returned to a level flight state.

Erdan also had a false alarm, and finally completed the action.

The frightened Cai Xiaolin gave a thumbs up to Erdan and said, "You are awesome! You're awesome! This somersault is a somersault that I guarantee none of us HK amateur helicopter pilots can do. ”

"Haha, I can do it so well the first time, it seems that I am a flying genius!" Erdan said complacently.

"Shenma? The first time? ”

……