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Rocket science is a colloquial term for aerospace engineering and orbital mechanics.. It may also include the chemistry and engineering behind rockets.. In popular terminology, it's not rocket science is a layperson's passive aggressive phrase uttered meaning something that is not difficult to understand to attack one's inactions that is a byproduct of anti-intellectualism.
In most industrial countries, the aerospace industry is a co-operation of the public and private sectors. For example, several states have a civilian space program funded by the government, such as National Aeronautics and Space Administration in the United States, European Space Agency in Europe, the Canadian Space Agency in Canada, Indian Space Research Organisation in India, Japan Aerospace ...
The term is used ironically in the expression "It's not rocket science" to indicate that a task is simple. [27] Strictly speaking, the use of "science" in "rocket science" is a misnomer since science is about understanding the origins, nature, and behavior of the universe; engineering is about using scientific and engineering principles to ...
Multistage rocket – or step rocket [153] is a launch vehicle that uses two or more rocket stages, each of which contains its own engines and propellant. A tandem or serial stage is mounted on top of another stage; a parallel stage is attached alongside another stage.
The design and construction of rockets. The hobbyist or (semi-)professional use of model rockets; Aerospace engineering, also known as rocket science; Amateur rocketry, a hobby in which participants experiment with fuels or custom rocket motors
A rocket's required mass ratio as a function of effective exhaust velocity ratio. The classical rocket equation, or ideal rocket equation is a mathematical equation that describes the motion of vehicles that follow the basic principle of a rocket: a device that can apply acceleration to itself using thrust by expelling part of its mass with high velocity and can thereby move due to the ...
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A rocket is a missile, spacecraft, aircraft or other vehicle that obtains thrust from a rocket engine. Rocket engine exhaust is formed entirely from propellants carried within the rocket before use. [21] Rocket engines work by action and reaction. Rocket engines push rockets forward simply by throwing their exhaust backwards extremely fast.