WIP: This article is a work in progress and is not yet approved for usage in the RP.

The Ms-P3500 series Plasma Fusion Drives are a set of high-performance nuclear fusion-based propulsion systems intended primarily for use aboard starships, designed and manufactured by Murasaki Orbital Shipyards. They were first introducted in YE 35.

Ms-P3500 Plasma Fusion Drives (PFD) are a fairly advanced and efficient form of civilian-grade sublight propulsion intended for use during long deep-space voyages. An optimized fusion reactor heats up reaction mass – typically liquid hydrogen – to create a stream of compressed high-temperature plasma in an electromagnetic bottle, which is then directed and accelerated even further through use of gravimetric lensing to produce an incredibly high-velocity stream of exhaust. The plasma stream is released at a velocity of about 13% the speed-of-light, which in turn generates an incredible amount of thrust for a relatively small amount of fuel expenditure.

Because PFD's are reaction drives, they require reaction mass in order to operate; typically a ship will dedicate a portion of its mass for liquid hydrogen fuel storage. In most cases, Murasaki Orbital Shipyards ships possess enough reaction mass for 100-200 hours of continuous operation with all their main drives lit; though the specific amount of time is dependant on each particular ship design and the amount of cubage dedicated to fuel storage.

In order to compete effectively with the various forms of reactionless thrusters able to accelerate ships massing in the kilotonne and megatonne range at 2,000+ gravities, most reaction drives incorporate some form of mass compensator technology – devices which lowers a ships effective mass, allowing accelerations thousands of times greater than would otherwise be possible for a normal reaction drive. In Murasaki Orbital Shipyards designs, these systems are entirely separate.

Type: Sub-light Propulsion System Nomenclature: Ms-P3500 Designers: Murasaki Orbital Shipyards Manufacturer: Murasaki Orbital Shipyards

Effective Exhaust Velocity: 39,540.41 km/s (13.18 PSL¹⁾) Specific Impulse (I_SP)²⁾: 4,032,000

The Ms-O1-P3500 Micro Plasma Fusion Drive is the smallest of the Ms-P3500 series. It was developed for use by small space-faring devices and vehicles such as drones, satellites and missiles and small torpedoes.

Nomenclature: Ms-O1-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 65 KS or equivalent currency

Thrust: 1.76 kN (0.179 metric tonnes) Power Required: N/A Power Output: 23 kW Reaction Mass Consumption Per Hour: 160 grams of hydrogen

Volume: 0.1 m³ Length: 51 cm Width: 50 cm Mass: 23.7 kg

The Ms-O2-P3500 Compact Plasma Fusion Drive is the second smallest of the Ms-P3500 series. It was developed for use by larger space-faring devices and vehicles such as recon drones, satellites, heavy missiles, large torpedoes and very small aerospace craft.

Nomenclature: Ms-O2-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 250 KS or equivalent currency

Thrust: 17.57 kN (1.79 metric tonnes) Power Required: N/A Power Output: 230 kW Reaction Mass Consumption Per Hour: 1.6 kg of hydrogen

Volume: 1 m³ Length: 1.27 m Width: 1 m Mass: 237 kg

The Ms-T1-P3500 Super-light Plasma Fusion Drive is the third smallest of the Ms-P3500 series. It was developed for use by mid-sized aerospace craft, fighter craft and shuttles.

Nomenclature: Ms-T1-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 1,000 KS or equivalent currency

Thrust: 131.8 kN (13.44 metric tonnes) Power Required: N/A Power Output: 1.725 MW Reaction Mass Consumption Per Hour: 12 kg of hydrogen

Volume: 7.5 m³ Length: 4.24 m Width: 1.5 m Mass: 1.78 metric tonnes

The Ms-L1-P3500 Ultra-light Plasma Fusion Drive is the fourth design of the Ms-P3500 series. It was developed for use by large aerospace craft, and smaller varieties of interstellar freighters and starships.

Nomenclature: Ms-L1-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 2,000 KS or equivalent currency

Thrust: 263.6 kN (26.88 metric tonnes) Power Required: N/A Power Output: 3.45 MW Reaction Mass Consumption Per Hour: 24 kg of hydrogen

Volume: 15 m³ Length: 3.06 m Width: 2.5 m Mass: 3.55 metric tonnes

The Ms-L2-P3500 Light Plasma Fusion Drive is the fifth version of the Ms-P3500 series. It was developed for use by small to medium-sized interstellar freighters and starships.

Nomenclature: Ms-L2-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 5,000 KS or equivalent currency

Thrust: 2.63 MN (268.8 metric tonnes) Power Required: N/A Power Output: 34.5 MW Reaction Mass Consumption Per Hour: 240 kg of hydrogen

Volume: 150 m³ Length: 6.31 m Width: 5.5 m Mass: 35.52 metric tonnes

The Ms-L3-P3500 Standard Plasma Fusion Drive is the sixth incarnation of the Ms-P3500 series of fusion drive technology. It was developed for use by medium-sized interstellar freighters and starships massing in the low hundreds of kilotonnes.

Nomenclature: Ms-L3-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 10,000 KS or equivalent currency

Thrust: 26.36 MN (2,688 metric tonnes) Power Required: N/A Power Output: 345 MW Reaction Mass Consumption Per Hour: 2.4 metric tonnes of hydrogen

Volume: 1,500 m³ Length: 19.1 m Width: 10 m Mass: 355.2 metric tonnes

The Ms-L4-P3500 Heavy Plasma Fusion Drive is the seventh incarnation of the Ms-P3500 series of fusion drive technology. It was developed for use by large interstellar freighters and starships massing several hundred kilotonnes.

Nomenclature: Ms-L4-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 25,000 KS or equivalent currency

Thrust: 263.6 MN (26,880 metric tonnes) Power Required: N/A Power Output: 3.45 GW Reaction Mass Consumption Per Hour: 24 metric tonnes of hydrogen

Volume: 15,000 m³ Length: 30.56 m Width: 25 m Mass: 3.55 kilotonnes

The Ms-L5-P3500 Ultra-Heavy Plasma Fusion Drive is the eighth version of the Ms-P3500 series of fusion drive technology. It was developed for use by super-heavy freighters and starships massing over a megatonne.

Nomenclature: Ms-L5-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 40,000 KS or equivalent currency

Thrust: 2.64 GN (268,800 metric tonnes) Power Required: N/A Power Output: 34.5 GW Reaction Mass Consumption Per Hour: 240 metric tonnes of hydrogen

Volume: 150,000 m³ Length: 63.14 m Width: 55 m Mass: 35.52 kilotonnes

The Ms-L6-P3500 Super-Heavy Plasma Fusion Drive is the ninth and final version of the Ms-P3500 series of fusion drive technology. It was developed for use by multi-kilometer length starships, mobile industrial mining platforms and freighters massing in the multi-megatonne range.

Nomenclature: Ms-L6-P3500 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 60,000 KS or equivalent currency

Thrust: 26.36 GN (2,688,000 metric tonnes) Power Required: N/A Power Output: 345 GW Reaction Mass Consumption Per Hour: 2.4 kilotonnes of hydrogen

Volume: 1,500,000 m³ Length: 157.84 m Width: 110 m Mass: 355.2 kilotonnes