I am dizzy

  The following scene may be disgusting. Make sure you have a plastic bag or paper towel, or even a trash can.
  American Pat Ziker is experiencing an unusual air journey. The plane he was flying on had no destination. It sounded like a prank. “To make the passengers’ stomachs upset” was the sole purpose of this flight.
  A white bag shook back and forth around him, and Pat supported the mouth of the bag with two hands: “Oh-wow -”
  This is actually a scientific research project called “Zero Gravity Experiment”. By using high-performance weightless aircraft to perform continuous Kepler parabolic flight, researchers can create a repeated weightless environment in the cabin to study the physiological response of the human body under weightlessness.
  Isn’t it nausea? It takes so much manpower and material resources to conduct research on problems that can be solved with plastic bags. This is really hard to understand for people who have their feet on the ground in most cases. But in some industries, this situation has become a problem that cannot be ignored.
  As early as World War II, it was reported that the incidence of airsickness among cadets in the first 10 flights was 10% to 12%, and 1% of them were grounded. The number of air-sickness that can seriously affect the control of the aircraft in student pilots accounts for 15% to 18% of the total number of air-sickness. Similarly, today, when the pace of human conquest has already moved into space, people also hope to find a way to make themselves flat even under conditions of weightlessness.
  The physical discomfort that astronauts have to face due to weightlessness is essentially the same as the motion sickness phenomenon in our daily lives. This situation is collectively called “motion sickness.” It’s just that for us, the sense of weightlessness caused by ordinary vehicles will be fleeting, but pilots and astronauts have to deal with long-term zero-gravity conditions.
  Scientists’ research on motion sickness is almost accompanied by the development of manned aircraft. In this regard, the research conducted by the Institute of Research Achievements of the US Naval Academy of Aeronautics and Astronautics is the most prominent.
  In 1962, NASA funded a study of the institute. In this study, 28 military academies agreed to tie themselves to a chair fixed on a horizontal post on the side. After tying up, the chair starts to spin like a barbecue with people at a speed of up to 30 revolutions per minute. By the way, the speed of the roast chicken on the electric barbecue grill is basically 5 revolutions per minute. This is the original motion sickness experiment.
  Among these 28 students, only 8 students persisted to the end.
  This research is ongoing, and the experimental equipment is constantly being updated. “Just a stone, I can make it motion sickness.” said Pat Cowins of the Space Motion Disease Research Institute at NASA’s Ames Research Center.
  These vomiting and diarrhea volunteers did not waste their efforts. Although motion sickness is still incurable, people at least now know what causes motion sickness-due to sensory conflict. Because our eyes did not collude with our vestibular system. It was some deaf-mute people who made scientists associate motion sickness with the vestibular system. During a sea trip, these deaf-mute people had no vomiting reaction at all. It’s just sailing out to sea, but there is a “contradiction” between our eyes and inner ears. As for astronauts, what they face is the mother of all sensory conflicts: the illusion of visual relocation. In other words, “up” will change to “down” without warning. The place where this happens most often is in a space where there is no obvious visual distinction between walls and ceilings-the circular tunnel of the space laboratory is “notorious”. An astronaut said: “As long as I pass through this tunnel, I feel so sick that I want to “vomit specifically.” Even if I just glanced at another astronaut in a different position from myself, I would feel like vomiting. Many astronauts suddenly vomited just because I saw a teammate nearby Floating head-down in the air.”
  What happens if you throw up in your helmet while walking in space?
  An astronaut said that he had only heard of an “event in a spacesuit” and that it was “a small amount.” That incident occurred in the airlock of the International Space Station while an astronaut was preparing for his spacewalk.
  Imagine that your vomit is floating in the helmet on which you live. Dizzy, I vomit!