It's the engine that makes the propeller go fast, not the number of blades.
Plasma Cutting is process by which all types of conducting materials can be cut. This is an economic commonly used process for steel cutting in the industry today.
Answer The British established a Rocket battalion during the Napoleonic Wars in early 1800's. They were used at the Battle of Waterloo in 1815. They were also used by the British in the War of 1812 against America---thus the national anthem's line that says "in rocket's red glare". I don't know if this was the first use of rockets. But it was probably the first operational use by a large number of rockets.
Some helicopter main rotor blades spin at roughly 185 rpm and extend out up to 20 ft so your question is subjective to the helicopter you are speaking of.
600 miles an hour
they go fast
pie
They go very fast
harrison
of course rockets r in Halo 3! y wodnt they be???!!! GO PLASMA PISTOL NOOBS
They go really fast
I've never heard of that.
To launch the rocket off the ground and make it go fast.
rockets can go anywhere.space is where rockets can go
Titan rockets used for satellite lift vehicles, speed unknown: possibly classified.
Many rockets that go into space do carry humans, but, most rockets do not.
they fly at least 17000mph