Linked Questions

2 votes
1 answer
252 views

Why rockets are not tossed up before launch [duplicate]

Ok, I understand the nature of my question but anyway why the rockets are not tossed up before launch. It could introduce a huge handicap for a rocket in terms of reduced distance it has to travel, ...
Lu4's user avatar
  • 121
4 votes
2 answers
490 views

Why aren't rockets launched in movement? [duplicate]

Rockets launched to reach orbit usually start from a stationary position, engines are started and the rocket slowly gain acceleration upwards, eventually reaching orbit. What I'm thinking is that the ...
msb's user avatar
  • 153
1 vote
2 answers
1k views

How would the rocket differ in a higher atmospheric or ambient pressure?

I imagine the both rocket nozzles in either environment underwater or Jupiter or underground would have to be different than that of standard rocket nozzles because of the back pressure. In this ...
Muze's user avatar
  • 1
2 votes
2 answers
899 views

How much efficiency is lost from a fixed De Laval nozzle when modified for atmospheric use?

Fixed nozzles designed for vacuum are larger/broader than those designed for atmospheric or combined air/space use, which have less flanged nozzles due to the drag a larger flange would incur in the ...
Bohemian's user avatar
  • 817
9 votes
2 answers
420 views

Do smaller rockets require better weather at launch than larger ones?

The Spaceflight Now article Rocket Lab test launch halted by ship traffic, deteriorating weather mentions that the recent planned launch of the Electron rocket was cancelled due to a combination of ...
uhoh's user avatar
  • 149k
0 votes
2 answers
256 views

Floating Launch

Can a space rocket launch if it had no platform underneath it? If a blimp could lift a rocket into the stratosphere to launch, What problems would arise and how big would it be? What prevents a blimp/...
Muze's user avatar
  • 1
1 vote
3 answers
309 views

launch rocket like bullet from steam/air rifle?

I've included an image depicting how exhaust energy from a rocket launch can be recouped by turning it into a large scale pressure cooker by the use of some kind of platform=sabot (thanks @...
PDiracDelta's user avatar
1 vote
2 answers
248 views

What prevents the use of electric engines to assist with spacecraft launches? (Launch Booster Supplement)

Much fuel is used to get rocket off the platform on the initial launch. Could electric turbine engines be used like booster rockets? Could an electric engine like a rail gun work similar in the way ...
Muze's user avatar
  • 1
1 vote
1 answer
444 views

What is the maximum speed can a space rocket can travel with an air pressure of 14psi? [closed]

What is the highest threshold speed of a space rocket traveling in an air pressure of 14psi with all of its stages if they where able to leave a solo at Mach 1 or more? Related: What benefits can be ...
Muze's user avatar
  • 1
2 votes
0 answers
86 views

Small Rocket Questions [closed]

I'm interested in space technologies and have basic understanding of rocket flights. When looking at large commercial rocket launches, i noticed that the lift of process from ground takes very long (...
sgt_johnny's user avatar