Why after about 50 years space missions still relief on chemical rocket ? are our scientists out of ideas?

Answer 1

Excellent question ! :)

I wondered the same thing myself. 'Turns out, it's one of the most important questions facing our species...

Why the heck do we insist on hauling a tank of oxygen up through an ocean of the stuff?! 'Near as I can figure: because that's how the Germans- and then the Russians- did it, and we've been trying to catch up ever since :(

The most promising alternatives seem to cluster under the heading of "ground-assisted" launch (Ref. 1). Find the highest mountain closest to the equator and drill a vertical tube 2 kilometers straight down. Using compressed hydrogen gas as a propellant you can propel a sturdy soul willing to endure a ten-"g" acceleration for 6.3 seconds to mach 1.8. That's fast enough to light off a Supersonic Combustion Ram (SCRAM) Jet- and you can FLY most of the way to orbit.

From there, you either light off a small conventional rocket- or rendezvous with a rotating tether to exchange momentum with earth-orbiting mass launched from the lunar surface with solar-powered rail guns.

Answer 2

There are other means of propulsion, but if you want to produce MASSIVE amounts of propelling force in a minimum amount of time and still have accelerations in the neighborhood of 5g's or so, chemical rockets will always be your best bet. Good old impulse = momentum. We have other forms of propusion that we already use in space that are based on nuclear decay, such as ion propulsion, but they produce small amounts of force over much longer periods of time. The work great in space, though, and we've used them to move spacecraft deep into the solar system.

Answer 3

They are working on them, but it is doubtful they will use them on Earth,only in space.

They've been working on plasma and Ion drives for about 30 or 40 years. So far, however, these go slower than chemicals.

I think England is using an Ion drive, but it's going to take very long to reach final destination!

They probably won't have new drives until we get a base on the Moon or a better space station so they can test these in space.

Answer 4

We developed nuclear power for space propulsion many
years ago but the liberals & environmentalists killed the
project before it was brought to practical use...
Despite the fact that it could have been done safely..

Answer 5

That sounds like a good job for u. If u want something done ,do it yourself. Study hard your task is great.