Spacecraft Maneuverability: G-Forces in Space?

• whiterecluse
In summary, the conversation discusses the possibility of experiencing G force while flying a spacecraft in space and questions whether the same physics laws apply as on Earth. It is mentioned that G forces can still exist in space and may be a major hurdle when traveling at high speeds. The idea of traveling at significant fractions of the speed of light and the use of "hyper space" is also brought up. The conversation concludes by mentioning that realistic space maneuvering can be seen in movies like "Marooned" or "2001" and that wings and air are needed to perform banked turns.
whiterecluse
I was watching Star Wars and started to wonder. If a man were flying a spacecraft in space, would he be able to turn quickly and speed up quickly? Or would there still be a G force like in jets on earth? Kind of hard for me to explain it. I know that the jets now days can turn faster than the pilots can handle. Would the same physics laws apply in space? And what about when they go into "hyper space"? Can our bodies moving that fast all of the sudden?

Yes you can feel G force in space, and this would be a major hurdle if/when we travel at significant fractions of the speed of light.

In the some sci fi books they have to speed for many months to avoid high G force. Then they have to slow down for many months as well. THis could however help with the need for gravity in space i think?

the forces still exist in space. the forces or g's are directly related to the inertia of the moving body.

Last edited:
whiterecluse said:
I was watching Star Wars and started to wonder. If a man were flying a spacecraft in space, would he be able to turn quickly and speed up quickly?
First, forget about anything you see in an 'entertainment' type movie. If you want to see realistic space manoeuvring, check out 'Marooned' or '2001'. If you see a fighter or whatever swooping into a nice banked turn, it's only for artistic reasons. You need wings interacting with air to do that. How many gees can be pulled in a movement is entirely dependent upon the strength of you propulsion units. And 'hyperspace' is just a slick way to avoid the fact that you can't reach light speed in Einsteinian space. If you ever have a chance to play an old 'Asteroids' arcade game, you'll have a better idea of how a real spaceship would behave.

1. What is a spacecraft maneuver?

A spacecraft maneuver is any change in a spacecraft's velocity or direction, typically used to adjust its orbit, dock with another spacecraft, or avoid obstacles in space.

2. How are G-forces experienced in space?

In space, G-forces are experienced when a spacecraft accelerates or decelerates. Unlike on Earth, where gravity creates a constant force, G-forces in space are caused by the spacecraft's engines or changes in its trajectory.

3. What is the maximum G-force a human can withstand in space?

The maximum G-force a human can withstand in space is highly dependent on the duration of exposure and the direction of the force. In general, humans can withstand up to 5 Gs for a short period of time before experiencing negative effects like blackouts or organ damage.

4. How do spacecraft designers account for G-forces?

Spacecraft designers take into account the expected G-forces during different maneuvers and design the spacecraft and its components to withstand these forces. They also use techniques like gradual acceleration and deceleration to minimize the impact of G-forces on crew members.

5. Can G-forces be used for propulsion in space?

Yes, G-forces can be used for propulsion in space. This can be achieved through the use of a gravitational slingshot, where a spacecraft uses the gravitational pull of a planet or other celestial body to increase its velocity. This technique has been used in many space missions, including the Voyager and New Horizons missions.

• Mechanics
Replies
4
Views
943
• Mechanics
Replies
5
Views
1K
• Other Physics Topics
Replies
16
Views
6K
• Quantum Physics
Replies
7
Views
885
• Mechanics
Replies
20
Views
2K
• Sci-Fi Writing and World Building
Replies
17
Views
2K
• Mechanics
Replies
3
Views
1K
• Sci-Fi Writing and World Building
Replies
90
Views
6K
• Special and General Relativity
Replies
9
Views
1K
• Science Fiction and Fantasy Media
Replies
4
Views
2K