Dynasty class Patrol cruiser (ST)

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Dynasty class Patrol cruiser (ST)

Postby achillain » Tue Aug 17, 2010 9:47 am

Class: Dynasty Class
Length: 285m
Beam: 110m
Height: 85m
Departmental class: Patrol Ship
Cruise Velocity: Warp 8.5
Maximum Velocity: Warp 9.999983 for 18 Hours
Weapons systems: 6x Type VI Pulse Phaser Emitters, 8x Type XI Strip Phaser Emitters, 6x Multi-Use Liner Launcher Tubes, 2x Type V Inverse Tachyon Beam Emitters, Type II Reverse Polarity Neutronic Pulse Emitter
Decks: 20
Crew compliment: 200
Alignment & Era: Starfleet. Early 2380 (Post Nemesis)
Mission profile: Sector Patrolling and Reconnaissance
Purpose within Starfleet: Protect Starfleet’s interests within High Risk Sectors.

The Dynasty class was put forward as a Starship design in the mid 2360’s as a Heavy Scout vessel, designed to Scout out areas where larger vessels would have difficulty navigating, such as dense Asteroid fields, Gravimetric Wave fronts and Nebulous formations. During the early 2370’s, the design was modified to act as a Line runner, in order to penetrate Enemy patrols and recover crews and position operatives in enemy space. Then during the late 2370’s, the design was once again changed and finalized into its current configuration.
The initial idea of the ship was to penetrate into dense regions of space to seek out Pirate bases and other illegitimate bases of operations. Normal vessels of the line, such as the Galaxy class or the Excelsior class usually had trouble penetrating into areas such as Asteroid fields, where many Pirate bases were found to be. Usually when a ship reached the field density point where it would be hazardous to continue, the crew would have to proceed by shuttle craft, where the reduction in firepower and protection would make the operation even more hazardous.
However, events soon caused the focus to shift over to the Boarders of the Federation. The brief war with the Klingon Empire and later the Dominion forces brought new requests to the Starship design table. The Dynasty class was moved aside for other projects such as the Akira, Defiant and Achilles classes. However, as time progressed, the need for a medium sized, fast vessel able to penetrate enemy space and perform selected tasks became needed. The design for the Dynasty was brought out of the mothballs and modified. The new designs included alterations to the ships gravimetric and subspace footprints. However, by the time the Systems engineers began to plan the specific layouts got to Utopia Planitia, the need for the ship was gone, and the Prototype sat orbiting Mars, half completed.
After the war, Admirals within Starfleet began to see a shift in politics within the Alpha and Beta quadrants. The Reman incident raised several eyebrows and piracy began to climb again. The Admiralty decided to propose the development and construction of a vessel that would be able to patrol sectors where Pirates were known to work from and track them down and eventually eliminate their operations. The Dynasty class was brought out of the mothballs once again, and work began to update the design specifications. Additionally, several other departments within Starfleet looked in on the project and added design parameters to suit their needs. The end design was a ship that would be able to cruise at high warp, whilst having a low profile, being able to defend itself and help support other vessels quickly. On Stardate 85913.6, March 27th 2380, the USS Dynasty was launched from Utopia Planitia, after nearly 18 years of development.

Systems of Note.
Warp Drive.
The Warp Drive of the Dynasty is a very peculiar system at first glance. The Matter/Antimatter intermix chamber is divided into three sections. As the Deuterium and Anti-Deuterium streams enter the chamber, they pass through a series of Doppler reaction fields which separate the particles out into three separate streams depending upon the particles speed and phase variance to the local subspace fields. Particles found to have low velocity and a large phase differential to the local subspace field are intermixed in the first chamber, where the resulting plasma is used to power the ships systems.
Particles found to have a medium velocity and a medium phase differential are used to provide warp plasma to the primary drive coils. Particles found to have a high velocity and are in phase with the local subspace field are stored in a buffer system until needed. When the particles in the buffer are intermixed, they provide power to the secondary warp coils during high warp pursuits.
The Warp coils of the Dynasty class are split into two separate systems. The Primary Warp Coil array is arranged into a singular coil, rather than the normal array of semi-circular coils. The Primary coil allows the ship to create a more directed and confined warp field. The overall field density is increased by 85%, allowing for a smaller Warp field. This means that when the ship is in warp, its warp signature is harder to detect on sensors. The secondary warp coils are arranged around the primary coils. The secondary system is made up or a standard series of half-coils, except that the coil array is set on a series of motorised couplings.
When the Dysnasty class needs a sudden boost to it’s warp speed, or is travelling through an area where warp drives are less effective, the secondary warp system is engaged. A series of Subspace field analysers constantly check the status of the local subspace fields around the ship. Using this data, the Deuterium and Anti-deuterium particles of the secondary system are selected to be of the same phase as the local fields. When the particles collide and react, the resulting Warp Plasma stream is of a higher velocity as normal Warp Plasma, and has the same phase variance as the local subspace field. When this plasma is sent to the secondary coils, they create a warp field that is in direct phase with the local subspace field. The Coils of the secondary drive shift in and out in sequence to create a secondary warp field which enhances the primary warp field’s effect on Subspace. The Warp fields converge and become even more streamlined, enhancing the field’s density. Once the buffers of Matter and Anti-matter are used up, the primary warp plasma feed begins to power both sets of coils, allowing the field effect to continue, but at a lesser extent.
The design of the system allows the ships to increase it’s warp field strength by almost 300% during the activation of the secondary warp system, this is then reduced to a little over 180% after the primary warp system takes over. This burst allows the Dynasty class to quickly speed up and catch vessels it may be chasing, or cross an area of space that would normally only be able to be crossed by a slower warp factor. Additionally, because of the tighter warp field, the ships overall subspace field is nearly 70% smaller than that of a vessel of similar mass. And the warp field has a lessened stressing effect on Subspace.

Gravimetric field system.
The hull plating of the vessel contains a web of Gravimetric sensors and emitters. This was one of the ships first outstanding notations during it’s original design. The sensors constantly scan the surroundings of the ship, more specifically along the ships present vector and then map the density of local gravity fields. As normal ships pass through space, they disturb particles floating in space, and often displace them. The same is also true in terms of the local gravity fields. The mass of the ship causes it to “indent” the gravimetric plane, and as it travels, it causes eddies to form, which further effect the passage of particles.
The Gravimetric field system nullifies this effect by using the sensors to see that the native field looks like and then use the emitters to return it to how it was once the ship has passed. The same effect translates to particles and other objects displaced by the ships passage. The end result is that the vessel has no gravimetric footprint. The ship could pass through a Nebula or an Oort cloud and no-one would be able to tell afterwards.

Emission recycling field
Due to the additional systems onboard the Dynasty class, the ship has a greater electro-magnetic field signature, meaning that whilst it cannot be picked up via its Gravity footprint or its subspace field distortions, it shines like a beacon when a ship scans near it for power signatures. A series of electro-magnetic absorption matrices are incorporated into the ships navigational and defensive deflector fields. As the electro-magnetic fields emanate from the ship, they are absorbed by the matrices and are then bled back into the ships power grid through a series of phased couplings and pulsed waved patterns. The end result is the ship has a standard running signature of an Intrepid class, and when the system is put onto silent running mode, it has an effective signature of a class 3 probe.

Triple sensor system
All the systems listed above show how the Dynasty class is able to catch up with and hide from it’s prey. However, they do not describe how it finds it. The triple sensor web does. The shipboard systems calculate three random vectors from the ship and send a subspace sensor pulse along that vector. A brief moment later, the ships Gravimetric emitter web send a pulse in the same direction, causing the subspace pulse to refract along another vector, towards the intended location. The subspace pulses converge at the target point, causing a subspace resonance, and the passive sensors of the Dynasty class picks up that resonance. From the point of view of the target, their ship was scanned by three separate subspace scanners, each originating from a separate point in space. The make the scans more effective, the time between the Subspace pulse being sent and the Graviton pulse following it is determined by a random calculation depending upon local subspace variables. The triangulation system allows the Dynasty class to pinpoint it’s target and also judge the targets vector and velocity. Also, due to the nature of the subspace resonance, the receiving data is often of a higher density than a standard Subspace Scanner sweep, thus giving the crew a higher quality of information about their target.

Hull configuration and Structural Support system
The hull configuration of the Dynasty class originated in the Orberth class science vessel. The Engineers involved in the superstructure design found that if they kept the Warp Nacelles, Primary and Secondary hulls closer together, they could get a better warp field efficiency ratio. These design ideas were later implemented in the 2370-era ships, more noticeably, the Akira, Norway and Steamrunner classes.
To reduce the power requirements of the vessel, it was decided to keep the ship and a mid-sized hull, and with the integration of the other systems onboard the Dynasty class, there was plenty to think about. Due to the Warp Field Driver coil assembly consisting of two separate coil arrays, the Warp Nacelles of the Dynasty class are noticeably larger than would be expected of a class of similar mass. Additionally, the greater number of support vessels, larger shuttle bays and maintenance facilities would be required. The sensor systems also required larger departmental access and volume. The complex nature of the ships systems would require a large Engineering section, and the nature of the vessel required a large Tactical factor to be considered.
During the ships redesign in the 2370’s, the designers borrowed a design idea from the initial drawings of the Intrepid class. A separate module to contain various systems, similar to the module system of the Nebula class. To maximize the ship’s durability and reduce potential targets, the designers decided to add three modules to the superstructure; each one would feature a part of the ship’s Gravimetric Field system, Emission recycling field and sensor systems. The modules were placed on the hull to give maximum coverage and also incorporated tactical systems for a better tactical point of view. Each of these systems was duplicated within the main superstructure, in case one of the modules was damaged. The back-up system was designed to compensate for the loss of up to two of the modules without risking the ship’s mission profile.
Finally, the engineers noticed that when they used the ships Structural support system in conjunction with the warp field relays, they could both increase the effectiveness of the Structural Integrity Field (SIF) and also form a stronger cross nacelle field. The effect allowed the designers to ignore the line of sight design rule between warp nacelles as the SIF system acted like a virtual warp filed coil and when the frequencies of the SIF and the warp field were matched, the SIF’s effective power rating was nearly doubled in most cases.

The overall design and implementations of the systems detailed above meant that the ship designers and engineers could design a starship with the effective warp field strengths, sensor capabilities and Structural Strength of a Galaxy or Sovereign class, whilst having the appearance to sensors of being a Curry class transport and all the time, having the mass and size of an Akira Class. The additional systems also allowed the Warp core, sensors, Structural Integrity Field and other systems to be running at 100% capacity and efficiency whilst only running on 40-50% of the standard power usage. This means that the Dynasty class is a good all-round design which can hold its own very capably.
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achillain
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