How Does Rocket Propulsion Work?

In summary, a rocket works in space by using Newton's Third Law of Motion to propel itself forward by expelling gas or liquid at high speeds. It is able to move without air in space because it carries its own source of fuel and oxygen. The speed of a rocket in space varies, but it can reach speeds of around 17,500 miles per hour. Astronauts survive in a rocket in space by being inside a pressurized capsule or spacecraft, and they navigate using a combination of guidance systems, computer programs, and human control.
  • #1
the4thcafeavenue
14
0
can anyone explain the concept of rocket propulsion, in other words, M*delta(V)=delta(m)*Ve?

Thanks guyz
 
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  • #2
An object of mass M expels a portion of its mass dm at speed v_e. The remaining mass must recoil in the opposite direction to conserve momentum.
 
  • #3


Sure, I'd be happy to explain the concept of rocket propulsion. It is essentially the process by which a rocket moves through space. The equation you mentioned, M*delta(V)=delta(m)*Ve, is known as the rocket equation and it explains the relationship between the mass of the rocket, the change in its velocity (delta V), the change in its mass (delta m), and the exhaust velocity (Ve).

In simpler terms, the rocket propulsion works by pushing out a high-speed stream of exhaust gases in one direction, which in turn pushes the rocket in the opposite direction. This is known as Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

The rocket equation shows that in order for the rocket to gain speed (delta V), it needs to either decrease its mass (delta m) or increase the velocity of its exhaust (Ve). This is why rockets carry large amounts of fuel, which is constantly being burned and expelled as exhaust gases to propel the rocket forward.

I hope this helps to clarify the concept of rocket propulsion for you. Let me know if you have any other questions.
 

1. How does a rocket work in space?

A rocket works in space by using Newton's Third Law of Motion, which states that every action has an equal and opposite reaction. The rocket propels itself forward by expelling gas or liquid at high speeds from its engines in one direction, causing the rocket to move in the opposite direction.

2. How do rockets move without air in space?

Rockets are able to move without air in space because they carry their own source of fuel and oxygen. This allows them to create the necessary thrust to move through the vacuum of space without the need for air resistance.

3. How fast does a rocket travel in space?

The speed of a rocket in space depends on various factors such as the type of fuel used, the weight of the rocket, and the distance it needs to travel. However, most rockets can reach speeds of around 17,500 miles per hour to escape Earth's gravitational pull and enter orbit.

4. How do astronauts survive in a rocket in space?

Astronauts survive in a rocket in space by being inside a pressurized capsule or spacecraft. These vehicles provide a habitable environment with breathable air, temperature control, and protection from radiation and debris. Astronauts also wear specialized suits during spacewalks to protect them from the harsh conditions of space.

5. How do rockets navigate in space?

Rockets navigate in space using a combination of guidance systems, computer programs, and human control. They use data from satellites and sensors to determine their position and trajectory, and can make adjustments to their course by firing small thrusters or changing the angle of their engines.

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