What caused such frequent crashes when launching rockets into space? When will a person be able to launch them accurately? What prevents this?

What caused such frequent crashes when launching rockets into space? When will a person be able to launch them accurately? What prevents this?

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answers (2)

Answer 1
July, 2021

There are many factors influencing here - both financing, and the responsibility of manufacturers, the responsibility of designers, the quality of materials, and so on. There can be blunders everywhere.

But the question seemed to be about such a frequent crash when the rocket was launched. Starting is the most stressful part of a rocket engine. The maximum thrust is squeezed out in the off-design mode of the nozzle operation, a lot of vibrations occur that are difficult to predict. It is also difficult to predict the flow of liquid along the lines if the rocket is liquid.

In a word, rockets, from drawing to flight, are very laborious and require coordinated action of many people and machines. Is the screw loose? Everything will collapse. Insufficient boost pressure? Everything will collapse. Are you very self-confident and have done few trials? Don't be surprised when everything collapses.

Answer 2
July, 2021

A rocket is an extremely complex thing. It is almost impossible to achieve its trouble-free operation. Reducing the likelihood of rejection is the main goal. But probability is a strange thing.

Let the probability of failure of a small component of this rocket be 0.00001. But if we take 1,000,000 of these parts, then the probability of one of them failing during operation approaches 100%.

A rocket consists of a myriad of small parts. Making the probability of failure of this huge monster close to zero is an overwhelming task for designers.

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