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Space Rocket Combustion, chemical reaction and air pollution

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Space rocket combustion involves rapid redox reactions between a fuel and an oxidizer, releasing high temperature gases (such as  water vapor, CO 2 and others)  and particles directly into various layers of the atmosphere.   The main types of rocket fuels are liquid hydrogen, kerosene (RP-1), liquid methane, and solid propellants, each producing different, significant air pollutants.  Rocket launches release pollutants directly into the stratosphere (approx. 12–50 km altitude), where they can persist for several years, causing ozone depletion and contributing to climate change. While currently small compared to aviation, the environmental impact of rocket emissions is disproportionately high due to the altitude of injection and the accumulation of pollutants in the upper atmosphere. Rocket propulsion; source: Wiki Let's have a look on couple of examples: 1. Liquid Hydrogen (LH 2 ) and Liquid oxygen (LOX): Used by Space Shuttle main engines, Ariane 5, the...