Gao Dan flipped through the magazine without even raising his eyebrows, but he did speak up:
"how?"
The little boy turned around and walked towards Gao Dan, standing in front of him and reaching out to tug at his father's arm:
"dad."
Although I really wanted to remove my stupid son's hand, I held back in the end and finally looked up:
"Just say what you need to say!"
In front of his parents, the little guy is basically invisible!
"Dad, Tuanzi has a question to ask."
"What's the problem?"
The little boy didn't speak immediately. Instead, he climbed onto his father's lap and, after settling comfortably, said:
"Hmm... Why do fighter jets fly higher than passenger planes? And why are rockets higher and faster than fighter jets? Uncle Ye said there are even more amazing things, but we'll have to ask Dad to find out."
Gao Dan thought his foolish son would ask other questions, but to his surprise, it was this.
The magazine was gently placed on the table, and an eyebrow was raised:
"Why do you want to know these things?" I asked rhetorically.
"Um... just today when I was looking at the new house with Mom, Uncle Ye, Grandma Zheng, and Brother Xiao Jiu... balabala."
The boy recounted the whole story verbatim, and Gao Dan understood. He then hugged his son on his lap.
"In short, it's because the purpose, driving force, operating environment, and passengers are all completely different!"
This question was indeed no challenge for Gao Dan, who is considered an authority in this field.
However, even though this explanation is the simplest and clearest, it is still completely incomprehensible to a petty person.
"ah?"
Gao Dan felt a slight headache, but since his son was so curious, as a father, he certainly wouldn't hesitate to explain:
"Passenger planes are just a means of rapid transportation, designed for convenient transport rather than simply for speed. It is necessary to consider whether increasing speed is cost-effective."
Therefore, ordinary passenger planes are driven by aviation gasoline engines, and their propulsion power is significantly lower than that of rockets.
Rockets, in the end, are designed to escape Earth's gravity to a certain extent, which requires cosmic speeds.
Therefore, rockets are propelled by jet fuel, and their propulsion power is much higher than that of airplanes.
Furthermore, rockets can eventually reach the atmosphere or even enter the vacuum region, significantly reducing or even eliminating air resistance compared to airplanes, thus avoiding the problem of speed being limited by the atmosphere.
Generally, rockets do not carry people, but there are exceptions. These rockets may carry people, but the personnel on board are trained in spaceflight and are adapted to the rocket's ascent and space clock, so there's no need to worry too much about the speed causing inconvenience.
The little man listened very attentively, but unfortunately, he still couldn't understand most of it; the only thing he grasped was the last point:
"Dad, if rockets can carry people, then can people go to very, very high places?"
"That's one way to put it."
Immediately, the little one looked excited: "Daddy, can Tuanzi ride a rocket?"
hehe.
Want to ride a rocket?
"You're dreaming."
Forehead...
The child isn't stupid; he naturally understood that his father was trying to discourage him.
"Didn't Dad say that people can ride in rockets?"
Gao Dan reached out and rubbed his temples:
"As I've said before, only special types of rockets can carry people, but so far there's no successful record, so you shouldn't even dream about it."
"Huh? It hasn't appeared yet? When will it appear?"
Gao Dan didn't say anything, but the corners of his lips curled up slightly.
The little boy looked at his father's expression with great suspicion:
"dad?"
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