Flying saucer. Picture, project of a spacecraft

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SUMMARY

The discussion centers on the concept of a flying saucer as a reusable spacecraft, incorporating principles of motion and propulsion. Key elements include the use of a solar sail and a two-body system that utilizes repulsion and air resistance for movement. Theoretical frameworks are presented, suggesting that the design could leverage both aerodynamic shapes and solar wind for propulsion. Notable references include classic sci-fi films such as "Forbidden Planet" and "2001: A Space Odyssey," which inspire the design and conceptualization of futuristic spacecraft.

PREREQUISITES
  • Understanding of basic physics principles, particularly motion and forces.
  • Familiarity with spacecraft design concepts, including aerodynamics and propulsion systems.
  • Knowledge of solar sails and their application in space travel.
  • Awareness of historical and contemporary sci-fi influences on spacecraft design.
NEXT STEPS
  • Research the principles of solar sail technology and its applications in modern spacecraft.
  • Explore advanced propulsion systems, including ion drives and antigravity theories.
  • Study the aerodynamic design of vehicles and how shapes affect air resistance and motion.
  • Investigate the physics of repulsion and attraction in multi-body systems and their implications for spacecraft movement.
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Aerospace engineers, physicists, sci-fi enthusiasts, and anyone interested in the theoretical and practical aspects of spacecraft design and propulsion systems.

MasterJgon
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Principle, scheme, images of a flying saucer. Reusable spaceship of the future. Spaceship with a solar sail.
 

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Here's another from Lost In Space:

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The best designed spacecraft I have ever come across was one from a very old scifi movie(comic) called Brick Bradford(IFIRC). It was a sphere or teardrop shape with four extendable landing legs. I have always though this would be the most suitable shape as it would have the most internal space to put all the gear into. Obviously some sort of antigravity drive was used for propulsion.
I enjoyed the Forbidden Planet movie as it had great effects and a reasonable story line. The robot Robbie was the best robot I have seen for many years.At least he had a fair lick of sense, more than the useless robot in Lost in Space(tv series).
The scfi movie that impressed me the most was 2001. To me the effects were so realistic I had wonder how it was done. Still the best scifi movie of all time as far as I am concerned.
 
This painting
 
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The principle of motion of a flying saucer can be described as repulsion, in which one body gives acceleration to another, and receiving opposition from the force of inertia of another body, accelerates itself. I have not found any explanation of what repulsion is. Perhaps this is a jet propulsion.
Consider the engine as a system of two interconnected bodies that repel and attract each other. At the same time, their common center of mass remains in place. If during their repulsion a force acts on one of the bodies to resist its movement, then the other body, according to the law of conservation of energy, moves further. And the common center of mass of two bodies shifts. Thus, the system comes into motion. Thus, it is repelled by the force resisting the movement of one of the bodies.
In order to obtain this resistance force in the air, we make one of the bodies in the shape of a sphere so that it is streamlined, and the second is given a plate shape so that it experiences maximum air resistance during movement.

When these 2 bodies repel each other in the air, the plate gets more resistance and moves a shorter distance, and the ball gets less resistance and moves a greater distance. And the whole system moves. If the bodies are pulled back at the same speed, then we get a car with an umbrella, and the system returns to its original position.
But if the bodies are attracted with greater speed, then as a result of acceleration, their mass and kinetic energy becomes larger, the plate gets more air resistance. But at the same time, the plate transfers its energy to the air, and the air around the plate begins to move in the direction in which it pushed it. The movement of air by inertia continues even after the plate has ceased to push it. A wind is formed which pushes the plate like a sail. At this time, the plate is slowly attracted to the ball, creating a force directed against the wind. The energy of the plate, and the force that it creates in this case is less than that which it gave to the air by the previous action. As a result, the air flow drives the entire system. Thus, the original two-body system is repelled by the wind, exerting pressure on it from one side.

Similarly, this system works in space, starting from the solar wind, if the plate is a sail. Since the solar wind creates the sun, there is no need to create it. Due to the fact that the speed of the light wave is greater than the speed of the system, the light waves constantly put pressure on it from one side and it can keep pushing away from them until it reaches the speed of light. Perhaps, having pushed off from the light one last time, and not having received resistance to moving forward, it will exceed the speed of light as much as it can push off.
 

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