The delta-v needed for orbital launch using a rocket vehicle launching from the Earth's surface is at least 9300m/s.

Ultimately, comparison with a rocket vehicle using similar construction techniques failed to show much advantage, and funding for the vehicle ceased.

The impulse delivered by the motor to the rocket vehicle per weight of fuel consumed is often reported as the rocket propellant's specific impulse.

The history of rocket vehicles goes back to the 13th century in China.

I so seventy-five tanks observed became one hundred and the nineteen new Soviet-made rocket vehicles became thirty-eight.

This is the traditional takeoff regime for pure rocket vehicles.

Supersonic jets and rocket vehicles require several times greater thrust to push through the extra drag experienced within the transonic region (around Mach 0.85-1.2).

In rocket vehicles, propellant tanks are fairly sophisticated since weight is on a premium.

"And how do we hide a rocket vehicle big enough to carry a five-ton payload?"

As the remaining propellant decreases, rocket vehicles become lighter and their acceleration tends to increase until the propellant is exhausted.