Skip to main content

Questions tagged [space-tug]

Upper stages of rockets employed to put payloads into mission-defined orbits. Usually fitted with space-restartable engines. Also called orbital transfer vehicles. Some concepts imply repeated orbital maneuvers.

Filter by
Sorted by
Tagged with
-2 votes
3 answers
309 views

Can Solid Rockets (Aluminum-Ice) have an advantage when designing light space-tug for LEO?

This is a new subject for Space Industry – heavy spacecraft (1200-ton) in LEO that have to burn hundreds of tons of propellant to get going to their destination. It looks inefficient to launch 7+ fuel ...
TheMatrix Equation-balance's user avatar
1 vote
0 answers
101 views

How heavy is an orbital pogo stick?

Moving people from a A to B in space often requires a significant change in velocity, requiring propellant eating into the mass budget. But most of this propellant is "wasted" in moving a ...
SE - stop firing the good guys's user avatar
3 votes
1 answer
1k views

How to maintain balance and center of gravity when pushing a 100-ton piece of asteroid?

I understand that rotating momentum around a fixed axis can help with the center of balance. But is it enough? In my case, a space tug has to burn its engine for 1 min, accelerate a 100-ton piece of ...
TheMatrix Equation-balance's user avatar
6 votes
1 answer
319 views

Keep a 2nd stage in orbit and refuel [closed]

Why does SpaceX not develop a second stage that can be used to meet with a first stage to pick up payload and refuel, thus transporting goods to orbit repeatedly instead of being used only once?
Kiran's user avatar
  • 69
5 votes
1 answer
292 views

Was the Orbital Maneuvering Vehicle supposed to be crewed?

NASA studied another space tug design, termed the Orbital Maneuvering Vehicle (OMV), along with its plans for Space Station Freedom. The OMV's role would have been a reusable space vehicle that would ...
DrSheldon's user avatar
  • 48k
2 votes
1 answer
96 views

Will there be any additional benefits of reusability for the space tug?

We are now seeing certain advantages of the reusable use of different rocket stages. Decrease in price (perhaps not so much yet), increase in launch reliability, etc. Are there any other benefits of ...
TommyJo's user avatar
  • 325
2 votes
0 answers
57 views

What is more promising: the development of nuclear space tugs (Roskosmos, etc.) or the improvement of existing ones? [closed]

There are a lot of things in space now that require the use of space tugs. Many companies are developing their space tugs. For several years there has been talk of a nuclear space tug. Are all these ...
TommyJo's user avatar
  • 325
3 votes
1 answer
214 views

Have capsule-free taxi spacecraft ever been seriously considered for non-emergency use?

Capsules are heavy, but necessary. Or at least, they are necessary for launch, landing, and stays in space lasting more than an hour or two. But it is possible to imagine situations where cosmonauts ...
SE - stop firing the good guys's user avatar
3 votes
2 answers
160 views

Low-thrust space tugs

For my research in the field of orbital maneuvers I consider the orbital transfers with space tugs. For the high-thrust maneuvers I used the parameters of Fregat and Volga space tugs. However, for low-...
Leeloo's user avatar
  • 703
2 votes
3 answers
453 views

Is there any kind of research on *sub*-orbital rendezvous-ing with a space tug outside the atmosphere?

The key difference with a plain old-fashioned orbital rendezvous would seem to be that there'd be limited time to only briefly match velocities and trajectories: Let's say a vehicle launched from ...
Prototypist's user avatar
0 votes
1 answer
138 views

Is it possible to supply 47 tons of payload to the orbit with 5 tons of fuel?

There are 2 orbits: Circular orbit with 200km altitude Circular orbit with 800km altitude The space tug is already on the first orbit. Its dry mass is 960kg, the total mass of fuel is 5250 kg. It ...
Leeloo's user avatar
  • 703
4 votes
2 answers
252 views

Could a rescue spacecraft be in an orbit with rendezvous windows for ordinary LEO, GTO or deep space launches?

Sometimes orbital insertion fails which could be fixed by a space tug. I wonder if a tug could be placed in a long term orbit such that it sometimes matches the intended orbit of a launch from Earth. ...
LocalFluff's user avatar
8 votes
3 answers
685 views

Does NASA have a space tug project to bring a habitable module to the ISS?

The habitable modules of US sector of the ISS didn't have any propulsion systems to rendezvous the ISS by themselves. They were intended to be brought there by the Space Shuttle. Most of the Russian ...
user avatar