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K
06-14-2011, 09:52 AM
This thread is a brainstorm for a concept known as "Drivespace", which will be available to multiple civilizations within the Cras Terra setting. As such, people can comment, ask questions, suggest ideas, and so on with regards to the ideas presented here.

NOTE: This is not a proposal, and should not be treated as one, either. If this idea garners enough interest, it will become a Proposal, though.


Drivespace

Drivespace is a region of spacetime much like that of Realspace, with major differences. The key difference is the fact that Drivespace allows for faster-than-light travel and communication. Other differences include the following:


Matter takes exactly 121 hours to reach its destination and exit Drivespace, no matter how far away that destination is. Energy, on the other hand, takes only 11 hours to do the same thing.

Once something enters Drivespace, it cannot be affected by the rest of the universe in terms of physical interaction or communication. It can, however, send energy that will reach the destination much faster than it will.

No two matter-composed structures can interact with one another if they enter Drivespace at different points in time or space. In short, unless they go together using the same Stardrive at the same time, no two objects can meet one another in Drivespace.

The environment of Drivespace itself is completely empty and devoid of all matter and energy. It is a pure vacuum, even more empty than intergalactic space.

When something enters Drivespace, it releases a burst of tachyons into Drivespace, which take 11 hours to propagate back into Realspace within a range of 50 light-years from the entry point. If a sensor is within this range, it can theoretically analyze the arrangement of the tachyons to determine when and where an entrance into Drivespace took place, along with the intended destination.

Access to Drivespace is blocked within 0.1 astronomical units beyond the surface of an object with significant gravity (planets, moons, stars, etc.). Anything that would normally have exited Drivespace within this region actually exits beyond this forbidden zone.


Stardrives

Stardrives are devices that allow access Drivespace, and rely on the combination of three fundamental technologies: artificial gravity, dark matter manipulation, and tachyon manipulation. The Stardrive itself is a large device that usually takes up about 5% of the structure that is to enter Drivespace. It functions by using artificial gravity to suspend dark matter between Realspace and the natural space dark matter resides in, generating tachyons that are collected and held within a Tachyon Containment Unit.

Once a Tachyon Containment Unit is fully charged, the dark matter is released, reacting with the tachyons and pulling the structure into Drivespace. If this reaction is properly tuned with artificial gravity, then the Stardrive can pin-point a destination. Otherwise, the Stardrive merely sits in Drivespace for 121 hours, and returns back to the same exact spot in Realspace.

Stardrives can send a structure up to 50 light-years across space within a single jump, a maximum range that cannot be exceeded. After it returns to Realspace, the Stardrive requires 2 to 5 hours to recharge its Tachyon Containment Unit. However, it is possible to have more than one Tachyon Containment Unit attached to a Stardrive, temporarily circumventing this waiting period.


Drivewaves

Drivewaves are an advanced form of the Stardrive which take advantage of the fact that energy travels much faster than matter in Drivespace. Instead of using the same method as the Stardrive to enter Drivespace, Drivewaves surround the entire structure they are transporting with tachyons. This causes the structure to be treated as energy instead of matter, effectively "cheating" the system. Aside from this, the two systems are completely identical.


Drivespace Relays and Detectors

Drivespace Relays are an application of Stardrives for the purposes of communication. They essentially are structures that transport themselves into Drivespace with no set destination, and use the 121 hours in Drivespace to transmit information in the form of electromagnetic energy. 11 hours after its transmission, the information the Relay sends out reaches all Drivespace Detectors within 50 light-years.

Drivespace Detectors, on the other hand, don't actually have Stardrives on them, and don't even enter Drivespace. By analyzing the propagation of tachyons back into Realspace, Detectors can determine when and where a certain Stardrive entered Drivespace within 50 light-years, along with its mass and destination point.

Simultaneously, Detectors have Drivespace sensitive sensors that allow them to receive information sent as energy through Drivespace. More often than not, the components of Relays and Detectors are built into the same structure, making for a hybrid device that can both send and receiver information through Drivespace.

Enigma
06-15-2011, 10:25 PM
How does one navigate in driverspace?

Are there any restrictions on what can be brought into driverspace?

Do species remain conscious during the transition?

K
06-16-2011, 12:01 AM
How does one navigate in driverspace?

Are there any restrictions on what can be brought into driverspace?

Do species remain conscious during the transition?

Once you're in Drivespace, you're in "autopilot" for the rest of the way. After you pick the destination and activate the Stardrive (or Drivewave), you enter Drivespace, and must spend the required time in transit. You can't change directions, drop out early, and so on.

Not really. You could bring anything into Drivespace. However, if the total mass of what's being transported is more than 19 times the mass of the Stardrive (the "5% Rule"), the Stardrive doesn't work. Hence, there being big Stardrives for big spacecraft and/or spacecraft intended on carrying heavy things from place to place..

Yes. Drivespace doesn't affect matter or energy aside from the ways specified in the OP. It's a rather safe technology, all things considered.

Atrum Daemon
06-16-2011, 04:42 AM
Will Drivespace have time dilation or will the crew experience the 121 hours in normal time?

K
06-16-2011, 09:18 AM
Drivespace works independent of time dilation, so all matter and energy transported through it will always exit Drivespace exactly 121 hours and 11 hours after their jump, respectively.

Atrum Daemon
06-16-2011, 06:27 PM
So a ship's crew would not experience the time in Drivespace as five hours as opposed to five days, then?

K
06-16-2011, 11:24 PM
I don't see why that would be the case, so no.

Are there any other questions, comments, suggestions, and criticisms for Drivespace? If not, I'll go ahead and make a proposal for this.

Enigma
06-17-2011, 04:16 PM
One hyperspace, different ways of accessing it - each drive with their own limitations and advantages.

I. The Interspace Drive - by balancing a fragment of dark matter of equal or slightly greater than the ship's mass in a resonance chamber. Activated, a field in the resonance chamber causes the dark matter to move deeper into hyperspace, dragging the ship with it into the interspace, the 'event horizon' at the edge of normal space and hyperspace. Oscillations in this field in the resonance chamber pulls the ship through interspace at speeds beyond what is capable in normal space without most of the effects of inertia and partial protection from debris by an Interspace "bow wave" that deflects small objects out of the path of the ship. As a benefit, the ship can still reference normal space objects.

Because the combined mass of the ship and dark matter can still be affected by local gravity, the ship can be pulled out of Interspace if it comes too close to a sizable mass equal or greater to its own. This is know as the "Gravity Shallows". Once out of interspace, the ship needs alternate drives and thrusters to move in normal space.

There are two types of the Interspace Drive:

Interstellar - where the ship is capable two ranges of speed. Sublight, which is from 0.001% to 99% of lightspeed; and cubes of the speed of light. Light One is one times the speed of light; Light Two is four times the speed of light, Light Three is nine times the speed of light; etc. Drives are rated by their maximum speed. Usually due to the greater combined mass of ship and dark matter, this type of drive is more affected by gravity shallows at 31415 newtons. Sizable ships may find themselves forced out several AU away from the system primary. Civilizations utilizing Interspace ships usually build transfer stations near the interstellar gravity shallows to allow merchant ships to return quickly to Interspace.

Sublight - where the craft is capable of sublight speeds only. As the drive works with a much smaller fragment of dark matter, it is better suited for working within a gravity well but still affected by gravity shallows at 946 newtons, but can usually approach a planet within a fraction of an AU. Drives are rated by their maximum speed.


II. The StarDrive - dark matter reacting to concentrated tachyons collected in a containment vessel temporarily jumps the ship into a partial transition into hyperspace. Tachyon decay returns the ship to normal space after 121 hours. During this time, the maximum distance the ship can travel in a single jump is 50 lightyears. StarDrive cannot be initiated within 0.1 AU of a planet or significant mass.

III. HyperDrive - this type of drive allows the ship to open a 'wormhole gate' between normal space and hyperspace, allowing for a full transition. To exit Hyperspace, the ship has to create a second gate. This type of drive cannot create a wormhole gate within 47123 Newtons of a sizable mass.


IIIa. HyperGate - A variant of the hyperdrive that creates standing gate, allowing ships without their own hyperdrive to transition into Hyperspace. However, there has to be a hypergate at the destination to allow the ship to transition back to normal space. Like the hyperdrive, the gate has to be positioned no closer than 47123 Newtons from a significant mass.

IIIb. Hyperspace Transponder - a communication relay that allows for radio, microwave and maser transmissions to be beamed into and out of hyperspace, to a maximum limit of 29.3 light years. Installations can be installed on ships or orbiting platforms, but cannot work within 942 newtons of a sizable external mass.

Enigma
06-18-2011, 03:01 AM
I. The Interspace Drive - by balancing a fragment of dark matter of equal or slightly greater than the ship's mass in a resonance chamber. Activated, a field in the resonance chamber causes the dark matter to move deeper into hyperspace, dragging the ship with it into the interspace, the 'event horizon' at the edge of normal space and hyperspace. Oscillations in this field in the resonance chamber pulls the ship through interspace at speeds beyond what is capable in normal space without most of the effects of inertia and partial protection from debris by an Interspace "bow wave" that deflects small objects out of the path of the ship. As a benefit, the ship can still reference normal space objects.

Because the combined mass of the ship and dark matter can still be affected by local gravity, the ship can be pulled out of Interspace if it comes too close to a sizable mass equal or greater to its own. This is know as the "Gravity Shallows". Once out of interspace, the ship needs alternate drives and thrusters to move in normal space.



II. The StarDrive - dark matter reacting to concentrated tachyons collected in a containment vessel temporarily jumps the ship into a partial transition into hyperspace. Tachyon decay returns the ship to normal space after 121 hours. During this time, the maximum distance the ship can travel in a single jump is 50 lightyears. StarDrive cannot be initiated within 0.1 AU of a planet or significant mass.


II. The StarDrive - dark matter reacting to concentrated tachyons collected in a containment vessel temporarily jumps the ship into a partial transition into hyperspace. Tachyon decay returns the ship to normal space after 121 hours. During this time, the maximum distance the ship can travel in a single jump is 50 lightyears. StarDrive cannot be initiated within 0.1 AU of a planet or significant mass.


III. HyperDrive - An Interspace drive is outfitted with a hyperdrive booster. Once the interspace drive reaches light speed, the hyperspace booster is activated, pushing it past interspace into hyperspace proper. Once the hyperdrive booster is disengaged, the ship returns to the interspace where it can then exit back into normal space.

NOTE: Hyperdrive should be disengaged while well clear of any significant mass equal or greater than the ship. Once back in interspace the ship's dark matter is once again affected by gravity. If within the safety zone of a significant body, the ship explodes into a rain of energetic subatomic particles due to sudden dark matter intrusion into normal space.


If I set the Gravity Shallows constant at 1781.24 Newtons,
a ship massing 100 Metric Tons would be able to come as close as 86,556,826 km or .57 AU to the Sun, 149,598 KM or 0.001 AU of Earth and 16,593 of the moon before it would be forced out of interspace. It could still travel to the Earth or moon using thrusters.

A cargo vessel massing 100,000 metric tons would be able to come as close as 2,737,167,179 km from the sun (just shy of Uranus' orbit), 4,730,708 km from the Earth and 524,722 km of the moon.

For 100,000 metric tons to come within 0.001 AU of the Earth, 1781243 Newtons; 0.01 AU would take 17812 Newtons; and for 0.1 AU it would be 178.1243 Newtons.

100 metric tons @ 17812 Newtons, 27,371,979 KM (.18 AU) from the sun; 47,307 km from the Earth; and 5,247 km from the Moon.