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Ralphonsicus
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For example, in the SSET (Space Shuttle External Tank), how fast does the burnt fuel (liquid hydrogen and oxygen) exit the nozzle at its bottom?
The speed of gas coming out of a rocket's nozzle, also known as the exhaust velocity, is determined by the specific impulse of the rocket engine. This is a measure of the efficiency of the engine, and is calculated by dividing the thrust produced by the rate of fuel consumption.
The speed of gas coming out of a rocket's nozzle is affected by the type of propellant used, the design and size of the nozzle, and the operating pressure and temperature of the engine. Additionally, the altitude and atmospheric conditions play a role in the exhaust velocity.
The speed of gas coming out of a rocket's nozzle varies depending on the factors mentioned above. On average, the exhaust velocity of a rocket engine can range from 1,500 meters per second to over 4,500 meters per second.
The speed of gas coming out of a rocket's nozzle is important because it determines the amount of thrust produced by the engine, which is necessary for the rocket to overcome the force of gravity and achieve liftoff. It also affects the overall efficiency and performance of the rocket.
The speed of gas coming out of a rocket's nozzle has a significant impact on the rocket's trajectory. A higher exhaust velocity allows the rocket to accelerate faster and reach higher speeds, resulting in a more vertical trajectory. On the other hand, a lower exhaust velocity can result in a more gradual ascent and a flatter trajectory.