Can a plane ever cross the gravitational line and get into space?

It can be a fighter plane with different fuel. what is the height at g-pull fade?|||the problem is, the fuel for plane engines generally require Oxygen in the atmosphere to burn.


Have you ever seen a plane that carries it's own oxygen for the engines? I haven't.


It's possible, but hasn't been perfected.


And once in space, how is it going to come back in without burning up? Reverse thrusters?|||Yes, but only the ones that do not use air(commonly oxygen) to produce thrust. Rocket airplanes use liquid fuels that are forced out of the nozzle with tremendous force. This produces thrust. So these types of aircraft can reach space.|||no its not possible. there is no way it can happen. no gas turbine engine can possible do it. no oxygen no thrust.|||bi b2|||If its a craft with different fuel then its surely possible.


Height of around 25000+ km the G's nearly zero. However to escape ANY gravitational pull I think you need to travel a lot and I doubt you will be alive till then. Probably beyong this solar system you might find some place.|||G-pull fade? There is no such thing, gravity extends to infinity. It reduces progressively, as a function of the square of the distance, but nevers reaches zero. Look at the Moon, it is about 400000 km distance, but it orbits Earth, because it still feels Earth gravity. Astronauts in the space station, at 400 km altitude, would feel 88% of the weight felt on land if the station was not in orbit, which means travelling at over 7.5 km a second.





There is something called "first cosmic velocity" this is the speed one would have to travel at so that, though gravity deceleration, would bring an object to zero speed but at infinite distance, in that case, this is the liberation velocity. Only multi-stage rockets managed to do so, with space probes; the escape velocity for Earth is 11.186 km/s. If you want do to that with a plane, it is not a case of using a different fuel, it is a function of how much fuel you need, and how you can use it. The space shuttle uses the best fuel -- short of nuclear energy -- available, and look how much it needs just to achieve orbit at 400 km altitude.