[Naufal the B. S. (OP)]

What is the difference between liquid fueled rocket motors and solid liquid rocket motors?

[Chemistry4me]

The liquid propellants require some complicated piping and pumping equipment to feed their engines. They can provide greater propulsive thrust and throttle their power, but take time to build up this thrust when first ignited.

[Naufal the B. S. (OP)]

How to drive the pumps?
Please help me...

[Chemistry4me]

I think they use a gas turbine for the rocket engine to pump fuel and oxidizer into their combustion chamber.

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It's going to look something like this

[Naufal the B. S. (OP)]

Did it driven by motor?

[Chemistry4me]

No, I don't think they are.
A rocket engine is basically throwing mass in one direction and benefiting from the reaction that occurs in the other direction as a result.

[Bored chemist]

The pumps are probably driven by motors. They might be driven by a small engine running from the same fuel and oxidiser as the main rocket.
You can only do this with fairly big rockets otherwise the extra weight of the pumps and so on makes the thing too heavy to fly.

[Naufal the B. S. (OP)]

Why "rocketeer legend" (von braun, goddard, etc) didn't mix oxidizer and fuel directly like bp (kno3 + c)?

[Naufal the B. S. (OP)]

But rather, they used pump to mix oxidizer and fuel

[Bored chemist]

Why

[Bored chemist]

the double post?
Anyway the answer is that if you mix the things they used as liquid fuel and oxidiser theygenerally  react and catch fire. Some of the things they used like liquid oxygen and alcohol can't be mixed because one of them needs to be kept very cold.

Even the ones where you can mix them without the reaction starting would give you a mixture that was almost certain to explode.
The point is that they cannot react until you mix them so up till that point they are relatively safe.
That means that you can use really dangerous "mixes" for liquid fueled rockets.
That means that you probaly shouldn't even try to copy them.

[Naufal the B. S. (OP)]

Why?

[Bored chemist]

Because you will probably kill yourself.