Star Fleet Engineering
Bureau of Starship and Starcraft Technology
Version 1.00 (5 August 2001)
1. INTRODUCTION
This is an attempt to bring a lot of information together in a very
condensed form, so it is somewhat technical. I have attempted to keep it
as simple as possible, however. It is not Star Trek canon, but it is
based on an expanded version of it used in the Alt.StarFleet.RPG (ASR)
shared-fiction writing and role-playing game. This guide has been written
for the ASR as a guide to all of the technologies employed by Federation
and known alien races in the year 2412.
2. PROPULSION SYSTEMS
Propulsion systems are those systems which move the spacecraft or
starship. A spacecraft is a small vessel which can be carried on a
starship. Many spacecraft do not have faster-than-light drives. A
starship is generally classified as a large faster-than-light capable
vessel.
2.1. Faster-than-light Drives
Faster-than-light (FTL) drive systems are the glue that holds the
Federation and other large interstellar alliances and empires together.
Without FTL drives, it would take years to cross between even nearly
stars.
2.1.1. warp drives
Warp drives are the most commonly used FTL propulsion system in the part
of the Galaxy where the Federation lies. Warp drives work by bending
normal space with gravitational fields so that space ahead of the starship
is contracted and a ship moving at velocities of less than the speed of
light appears to a remote observer to be moving faster than light speed.
It does so by making many small jumps across the folds in space many times
per second. Since the apparent velocity of the ship is faster than the
speed of light, it is invisible to an observer outside of the vessel
without special sensors.
2.1.2. hyperspace drives
A somewhat less common FTL technology is the hyperspace drive. This is
what the Fedeation has dubbed "dimensional warp." Although both are based
in gravitic manipulation, this technology is completely different from
normal space warp drives as described above. Rather than warping normal
space, a hyperspace drive used a gravitational field to push the ship
across the dimensional barrier into a parallel dimension, hyperspace.
Hyperspace is actually a nested series of dimensions, each one with a
relative compression greater than the one before. Travelling 10 km in the
first hyperspace level, commonly referred to as the alpha band, a ship
transitioning back to normal space will find that it has travelled 35 km.
If the ship was travelling at 0.5 c (half the speed of light) in
hyperspace, it will appear to have travelled at 1.75 c to an observer in
normal space clocking the trip.
Much of the physics of hyperspace is not known. There are large
gravitational waves and eddies in hyperspace which pose a navigational
hazard to starships. Because of these waves and eddies, it is impossible
to use normal space warp drive in hyperspace or to use gravitational
shields. Long range sensors are also almost useless. Short range and
tactical sensors are clouded by the gravimetric interference.
2.2. Sublight Drives
Sublight drives are those propulsion systems used to move a ship at
subluminal velocities. There are a number of different technologies which
are employed for this purpose.
2.2.1. reaction drive systems
Reaction drive systems are those drives that expel mass to create momentum
through the law for conservation of momentum of a center of mass. These
drives utilize solid propellant rockets, liquid propellant rockets,
fusion-powered rockets, etc. The latter are often employed in a class of
drive system known as ion drives. These drives include impulse drives and
other ion drive systems and photon or light pressure drives.
2.2.2. gravitic drive systems
Gravitic drive systems include many of the faster-than-light drive
systems, such as warp drives and hyperspace drives (including dimensional
warp systems). This technology may also be applied to sublight
propulsion. These drives normally work in one of two ways. First, they
may reduce the apparent mass of the ship by unbending the gravity well
created by the ship. This system reduced the impulse needed to move the
ship but will not move the ship without another drive system. (The
Federation Distortion Kinetic drive combines this type of drive system
with an impulse drive.)
Second, this type of drive system may create an assymetry in the gravity
well around a ship which actually pulls the ship in the desired direction.
This type of drive has no exhaust and allows a ship to be extremely
maneuverable since acceleration may be applied in any direction. The
Dalriadan Alliance and Kzinti Patriarchy use this type of drive.
3. SENSOR SYSTEMS
Sensor systems are the means by which the starship is able to observe the
environment around it. Without sensor systems, it is impossible to
observe the environment around the ship unless it is close enough to a
star and another object for visual observation through a port hole. All
"windows" or "portals" on Federation starships are actually view screens
which display computer interpretted data from sensors on the hull. Some
of these screens may be set to allow direct viewing of the external
environment which ambient lighting conditions permit.
3.1. Long Range Sensors
Long range sensors are used to observe phenomena well beyond visual range,
when the travel time of electromagnetic radiation (the speed of light) is
slow relative to the distance to be travelled. This is normally
considered to be a distance of greater than 1 light-second or 300,000 km.
These sensors can determine mass an velocity from the gravitational
distortions created by the presence of mass.
3.2. Short Range Sensors
Short range sensors read the electromagnetic spectrum to provide
infomation about the immediate surroundings.
3.3. Countermeasure Systems
Countermeasure systems interfere with sensor readins or provide false
sensor echoes intended to devieve the scanning vessel. There are a number
of types of countermeasures.
3.3.1. jamming
Jamming blocks electromagnetic sensors by clouding the readings with
noise. This prevents accurate readings, but the source of the jamming is
obvious, so this sort of countermeasure does not help to hide the vessel.
3.3.2. decoys
Sensor decoys are probes which mimic the sensor profile of the mother
ship. They are most useful at long range since a sensor probe bears
little resemblance to a starship on visual sensors.
3.3.3. stealth
Stealth attempts to hide the ship by stopping all external emissions.
This means no drive so that the ship coasts at a constant velocity and no
active sensors or communications. The vessel is still able to use passive
sensors, those which recieve signals without any output, but these have
greatly reduced resolution compared to normal sensors.
3.3.4. cloaking
Cloaking devices completely mask the sensor signature of the ship by one
of two methods. Gravitic cloaks (as those used by the Romulans and
Klingons) bend sensor beams around the vessel so that there is no sensor
return from the ship. Such cloaks can be detected by passive sensors, but
their emission levels are very low and so they are extremely difficult to
detect. Because of power requirements, it is not possible to fire weapons
while cloaked.
Phase cloaks actually move the ship out of temporal phase with the rest of
reality. They can be detected because of the temporal phase differential,
but the ship scanning for a phased vessel needs to know precisely what it
is looking for in order to detect it. Since a ship in phase is out of
temporal sync with the rest of reality, it is impossible to launch
shuttlecraft or fire weapons while cloaked. Anything in contact with the
hull is also phased, so it is not possible to launch rockets or other
missile type weapons attached to the hull. Without the phase cloaking
device on the ship, such objects would be lost in temporal limbo after
launch and would not return to unphased space.
4. ENVIRONMENTAL SYSTEMS
Environmental systems make keep a starship, spacecraft, or starbase
habitable. Without them, it would be impossible to live in space.
4.1. Life-support Systems
Life-support systems maintain the air, graivty, and temperature in the
ship. They also reduce the effects of acceleration on the vessel's
inhabitants in order to prevent them from being turned into bloody smears
by the large forces involved in pushing a vessel to high velocities in a
short period of time.
4.1.1. atmospheric generation
The internal atmosphere is carried to the ship in compressed oxygen and
nitrogen tanks (for class M environments). Thereafter, it is maintained
by filters and carbon dioxide scrubbers. When the ship suffers a hull
breach and loses atmosphere, atmospheric storage tanks can restore
atmosphere and pressure once the hull breach is sealed by bulkheads or
force fields.
4.1.2. gravity generation
Gravity generators make life aboard a starship similar to life on a planet
and are important in maintaining health and fitness in the crew. Without
gravity generators, the ship would have only microgravity and occupants
would suffer muscle and bone atrophy during long voyages.
4.1.3. temperature control
Heating and cooling systems maintain the temperature of the living
environment on the ship. They use the plasma conduits to heat and liquid
nitrogen cooling loops to cool the vessel. These are the same systems
that balance the temperature of the reactor system. Excess heat is
radiated through the skin of the vessel.
4.1.4. inertial compensation
The Inertial Dampening Field (IDF) generators allow the crew to survice
the huge accelerations available from the propulsion system. Without the
IDF generators, a ship could only accelerate at about 100 m/s^2 (meters
per second squared, about 10 Terran-standard gravities). With the IDF
some craft (combat shuttles) can reach accelerations as large as 250
km/s^2 (kilometers per second squared or 25,000 g's).
4.2. Food-generation systems
While some space fairing races still store food in refrigerated areas or
in freeze-dried form for later reconstitution, most use these methods only
for luxuries. Most food is created from simple protiens by a replication
system. For some ships, the power requirements of the system are such
that simple nutrional material is provided. More elaborate systems
actually allow synthesis of prepared dishes.
4.3. Water-generation systems
Virtually all water used aboard the starship is recycled through a system
of filters. When needed, fresh water can be created from stored oxygen
and hydrogen.
4.4. Waste reclaimation systems
Very little that is disposed of on a starship actually becomes waste which
must be disposed of. Most materials are able to be reclaimed by being
broken down into compotnent elements by a replicator systems. Only a few
complex molecules are not able to be processed by the replication system
and must be disposed of.
5. WEAPON SYSTEMS
Various sorts of weapons systems are used by starships, spacecraft, and
starbases to defend themselves and/or to attack other ships, craft, and
bases.
5.1. Beam Weapon Systems
One of the most common and versitile and common classes of weapons is the
beam weapon. They are limited in range because of the limited ability to
maintain beam focus and they are also power intensive.
5.1.1. particle beam
The particle beam is a generic term for any energy weapons which operates
by exciting the state of some sort of particle, be it a wave-particle of
the electromagnetic spectrum or some other fundamental particle. This
broad class includes masers, phasers, grasers, and many other weapon
types.
5.1.2. masers
A maser is a device for amplifying electrical impulses by stimulated
emission of radiation. m(icrowave) a(mplification by) s(timulated)
e(mission of) r(adiation). The most common type of maser is a laser.
5.1.3. lasers
The laser is a type of maser generally operating in or near the visible
spectrum of light. They fire beams of coherent electromagnetic radiation.
Power ranges on these devices range widely. Primitive lasers cannot
penetrate a starship's shields, but much move powerful versions have also
been encountered.
The laser's "color" can be modified to any part of the electromagnetic
spectrum. This allow a ship to fire an "invisible" shot because it is not
in the visual part of the spectrum which could be used in a "surprise"
attack. However, sensors can still detect the beam.
Weapons in this class are generally useful only for cutting and burning.
5.1.4. phasers
Phasers (PHASed Energy Rectifiers) carefully modulate wavelength and
amplitude to produce the most versitile type of beam weapon. This careful
modulation can produce effects from bioelectric shock which will stun
most organic targets to heat to sub-atomic disruption which can vaporize
or explode targets.
5.1.5. disruptors
Disruptors are another form of directed-energy weapon. They operated on a
sub-atomic level to destabilize the strong force binding protons and
neutrons together in the nucleaus of the atom. These weapons leave a
residual anti-proton signature. Because of their nature, disruptors are
much less versitile than phaser weapons.
5.1.6. graser
A graser is a device for amplifying gamma rays by stimulated emission of
radiation. g(amma) r(ay) a(mplification by) s(timulated) e(mission of)
r(adiation). The resulting beam is, essentially a form of maser which
operates on electromagnetic radiation with far shorter wavelengths than
the visible range of light.
5.1.7. graviton cannon
A graviton cannon is a device for amplifying gravitons by stimulated
emission of radiation. The resulting beam is a focused gravitational
field which warps materials beyond their failure point.
5.1.8. ion cannon
Ion cannons fire a stream of charged particles at a target. This is a
generic term for any particle beam for which the particles are also charge
carriers.
5.1.9. plasma cannon
The plasma cannon is a type of ion cannon. It operates by exciting the
atoms of a gas to the point where they spontaneously ionize. While the
range of these weapons are relatively limited, they have great destructive
potential and can both burn through matter and short out electrical
systems.
5.1.10. tractor/pressor beam
A, typically, non-destructive implementation of the graser concept,
tractor and pressor beams are used to manipulate objects from a distance
using focused gravitational fields.
5.2. Missile Weapon Systems
Another general classification of weapon are missile weapons. Generally,
these weapons have much greater effective ranges than energy weapons.
Missile weapons are characterized by solid projectiles which may be launch
from a vessel by means of internal propoulsion within the missile, by
means of an accelerator carried aboard the launch ship, or by a
combination of the two.
5.2.1. rockets
The most basic type of missile weapon is the rocket. It is, generally,
self propelled and has limited or no guidance ability after launch. This
type of weapon is generally not seen on modern starships. However, they
may be used in planetary operations where area saturation may be more
important than precision.
5.2.2. missiles
The term missle generally refers to any missile weapon which may be guided
after launch. This typically means that the missile itself has some
propulsion system aboard it, though it may be self-launch or accelerated
by a ship-side linear accelerator.
5.2.3. torpedoes
Torpedoes generally refer to a missile which is launched by a ship-side
linear accelerator and has limited on board propulsion.
5.2.4. warheads
The term "warhead" refers to the type of ordinance carried by the missile
weapon.
5.2.4.1. explosive
The most common type of warhead is the explosive warhead. It may carry a
chemical explosive; however, the most common type of modern explosive
warhead carries an anti-matter charge in a magnetic bottle. The bottle is
released by a proximity fuse and the anti-matter anihilates part of the
matter of the weapon casing, releasing an energetic wave which damages
even shielded objection within the radius of effect may be several dozen
kilometers for shielded objects and several hundred kilometers for
unshielded objects.
5.2.4.2. lasing
Lasing warheads explode at a relatively large distance to their targets
and do not do damage by their explosion. A large bomb at the heard of the
lasing warhead is used to pump, that is provide energy for, a
direct-energy weapon focusing unit within the warhead. Because this
process occurs far from the launching ship, radiationing poisoning of the
crew is not an issue and the lasing process can use much more energy than
could be safely contained aboard a starship, station, or planet. The
resulting beam is, therefore, much more powerful than any conventional
energy weapon. The targetting of this sort of weapon must be very
precise. A small error in targetting can mean that the energy blast
misses the target completely. For this reason, most lasing warheads carry
advanced guidance systems and missiles with these warheads are configured
to precision maneuvering.
5.2.4.3. jamming
A jamming warhead is not intended to do any damage to the target.
Instead, its systems are intended to confuse the electronic countermeasure
systems of the target ship. By so doing, such a warhead renders the
countermeasures less effective against other incoming missiles and their
warheads, allowing a greater number of explosive and lasing warheads to
find their mark.
6. DEFENSE SYSTEMS
There are four principle ways in which a starship avoids damage in
combat. Shielding systems, point defense systems, and electronic
countermeasures all attempt to make the enemy units weapon systems miss
their target. Armor allows a ship to absorb more damage than an
unarmored hull.
6.1. Shielding systems
The shielding systems of almost all starships in known space consist of a
series of graviton polarity generators. These systems create small
space-time distortions which alter the trajectory of incoming matter and
energy in order to make it entirely miss, or at least glance off, the
hull.
6.1.1. navigational shielding
Navigational shielding, usually referred to as navigational deflectors,
are low-powered, forward-facing shield emitters that are intended to push
small particles out of the flight path of the ship. As a ship moves
through space at high velocities, even the smallest object can result in
a deadly collision if it is allowed to impact the hull. The navigational
defelctor is not capable of as high a sustained output as the defensive
shielding intended for combat; however, it is capable of simultaneously
moving many small objects out of the flight path.
6.1.2. defensive shielding
Defensive shielding refers to those systems intended to prevent incoming
fire from beam or missile weapons from impacting the hull. It typically
consists of a network of high-powered graviton emitters
6.1.3. structural integrity fields
Structural integrity fields are force fields which assist in maintaining
hull integrity under the stresses associated with theoperation of the
ship.
6.2. Point Defense Systems
Point defense systems are used by several races to supplement the
capabilities of their shields. Point defense systems can physically
intercept missiles with either energy or missile weapons of its own.
6.2.1. point defense beams
Point defense beams are clusters of lasers or other low-power beam weapons
which are used to physically intercept incoming missile and torpedo fire.
These systems have extremely small tracking times, but the velocity of the
incoming projectile does impact system effectiveness. They system has
very limited use against incoming beam weapon fire.
6.2.3. point defense drones
Point defense drones work by spoofing weapon targetting sensors. They
project electronic noise and/or images of the ship in order to confuse
targetting sensors. In the distances of space-combat, even a slight
misalignment will result in a clear miss. In some cases, point defense
drones are used to physically intercept incoming missile fire.
6.3. Electronic Countermeasures
Electronic countermeasure system effect targetting sensor systems in an
effort to disrupt the direction of incoming fire or to overcome that
disruption.
6.3.1. electronic countermeasures (ECM)
ECM systems disrupt targetting sensors with noise, misleading sensor
echos, and various other techniques in order to prevent the enemy from
obtaining a positive weapons lock on the actual target. Even a very small
misdirection can result in a clean miss due to the large distances
involved in space combat.
6.3.2. electronic counter-countermeasures (ECCM)
ECCM systems attempt to cut through the disruption of ECM systems in order
to allow targetting sensors to lock onto the desired target normally and
without interference.
6.4. Armor
Armor is a passive defensive system. It dissipates energy from incoming
fire as it ablates. This reduces the damage done by a beam or missile
that strikes the hull of a ship.
7. COMMUNCIATION SYSTEMS
Because of the large distances involved in space travel, communication
systems are very important.
7.1. Electromagnetic
Electromagnetic communication is seldom used by advanced space-faring
races. These forms of communication include radio and microwave
communication systems. All share the trait that they are limited by the
speed of light and, therefore, efficient for communicating only over
short distances.
7.2. Subspace
The most common type of faster-than-light communication is the subspace
radio. This system creates a narrow spacial compression wave that allows
an electromagnetic signal to travel at elevated speeds in its wake. For
efficient operation, the signal needs to be regularly boosted and the
compression wave strengthened. If not, the signal loses speed. Most
major powers have networks of boosting stations throughout their
territories.
7.3. Hyperspace
Hyperspace/hyperwave radio systems push communication signals across the
dimensional barrier into hyperspace and through a number of trasitions.
Theses signals are then capable of travelling at speeds much faster than
those attainable by subspace radio. In order to receive the signals, the
receiving station must either be in hyperspace or have a platform anchored
in hyperspace to receive the signal and generate a transition point into
normal space through which the signal may pass.
8. COMPUTER SYSTEMS
In many ways, the computer systems are the heart of the starship. They
allow the efficient operation of all systems aboard the ship. Moreover,
many system cannot be operated without computer support.
8.1. Centralized Processing, Unified Core
One system architecture which is not generally used by more advanced races
is the centralized processing with a unified core scheme. In general, the
multi-tasking needs of a large space craft are not well suited to a
centralized processor system. The unified core refers to a centralized
data storage system.
8.2. Centralized Processing, Distributed Core
A small step away from centralized processing with a single centralized
data core is a system with centralized processing, but data distributed
through a number of systems around the ship.
8.3. Distributed Processing, Unified Core
One of the most common computer system architectures is to have processing
distributed through various computers throughout the starship but to have
a large number of files concentrated in large data storage modules. This
is the architecture utilized by most space going powers. Often the
unified core has one or more fully redundant backups.
8.4. Distributed Processing, Distributed Core
This model for computing offers the most flexibility and redundancy.
Processing is done at different computers or nodes throughout the ship and
data is stored at thse or other nodes. There is often a higher degree of
overlap and redundancy in these systems. The Federation has recently been
experimenting with implementing these systems in starships.
9. REACTOR SYSTEMS
Reactor systems provide the massive amounts of power needed by space-going
craft. A variety of forms of reactor are used by different races, but the
most common are fission, fusion, matter-antimatter, and quantum
singularity systems.
9.1. Atomic (Fission) Reactors
Fission reactors work by splitting atomic nuclei in order to produce
energy. They have the side effect of producing radioactive waste and
require a nuclear pile in order to function. However, they require no
other fuel and do not require frequent replinishment of the core. These
plants are particularly useful in smaller craft that cannot carry large
fuel reserves. The Dalriadan Alliance is the only known modern power to
make extensive use of fission power in its small craft. This greatly
extends the range of these craft compared with small craft of other
powers.
9.2. Fusion Reactors
Fusion reactors work by combining atomic nuclei to form heavier nuclei.
They do not produce radioactive waste, but they do require large amounts
of fuel. Virtually all starships and starbases use fusion reactors in
some matter, either for primary or secondary power production.
9.3. Matter-Antimatter Reactors
Matter-antimatter reactors work by colliding matter and antimatter
particles in a controlled manner. The collision results in the
annihilation of the particles and the production of energy in accordance
with the Einstein relation E=mc^2. Most space-faring races use this type
of system.
9.4. Quantum Singularities
Quantum singularity power plants produce energy by harnessing the enormous
gravity potential differences available in a very small, artificial black
hole. The Romulan Star Empire is one of the few powers to use such a
reactor.
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