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The Ms-P3501 series Magnetoplasmadynamic Thrusters are a form of high-performance electric propulsion system intended for use aboard starships and spacefaring devices, most commonly as a reaction control system (RCS) used for station keeping, docking and maneuvering. They are designed and manufactured by Murasaki Orbital Shipyards, and were first introducted in YE 35.

Ms-P3501 Magnetoplasmadynamic thrusters (MPDT) are a form of electrically-powered spacecraft propulsion which utilize the force on a charged particle created by an electromagnetic field to create thrust.

The thrusters utilize hydrogen gas, which is ionized and fed into an acceleration chamber where magnetic and electrical fields are generated. The particles are then propelled by Lorentz force resulting from the interaction between the current flowing through the hydrogen plasma and a magnetic field generated by the acceleration chamber, forcing the plasma out through the exhaust chamber at a speed of about 114.98 km/s.

Despite their comparitively lower thrust and fuel efficiency compared to other more powerful reaction drives, they are favored by Murasaki Orbital Shipyards as a form of reaction control system due to their lower exhaust velocity. Most Murasaki Shipyards-designed vessels are equipped with MPDT's for attitude control, station keeping and docking maneuvers where the exhaust of larger and more powerful engines can potentially cause considerable damage to other nearby spacecraft and installations.

Type: Reaction Control System Nomenclature: Ms-P3501 Designers: Murasaki Orbital Shipyards Manufacturer: Murasaki Orbital Shipyards

Effective Exhaust Velocity: 114.98 km/s Specific Impulse (I_SP)¹⁾: 11,725

The Ms-O1-P3501 Micro Magnetoplasmadynamic Thruster is the smallest of the Ms-P3501 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-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 13 KS or equivalent currency

Thrust: 20 N (0.002 metric tonnes) Power Required: 10 kW Reaction Mass Consumption Per Hour: 61.4 grams of hydrogen

Volume: 0.001 m³ Length: 10 cm Width: 10 cm Height: 10 cm Mass: 256 grams

The Ms-O2-P3501 Compact Magnetoplasmadynamic Thruster is the second smallest of the Ms-P3501 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-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 50 KS or equivalent currency

Thrust: 200 N (0.02 metric tonnes) Power Required: 100 kW Reaction Mass Consumption Per Hour: 614 grams of hydrogen

Volume: 0.01 m³ Length: 30 cm Width: 20 cm Height: 17 cm Mass: 2.56 kg

The Ms-T1-P3501 Super-light Magnetoplasmadynamic Thruster is the third smallest of the Ms-P3501 series. It was developed for use by mid-sized aerospace craft, fighter craft and shuttles.

Nomenclature: Ms-T1-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 250 KS or equivalent currency

Thrust: 1.5 kN (0.153 metric tonnes) Power Required: 750 kW Reaction Mass Consumption Per Hour: 4.6 kg of hydrogen

Volume: 0.075 m³ Length: 50 cm Width: 40 cm Height: 37.5 cm Mass: 19.2 kilograms

The Ms-L1-P3501 Ultra-light Magnetoplasmadynamic Thruster is the fourth design of the Ms-P3501 series. It was developed for use by large aerospace craft, and smaller varieties of interstellar freighters and starships.

Nomenclature: Ms-L1-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 400 KS or equivalent currency

Thrust: 3 kN (0.305 metric tonnes) Power Required: 1.5 MW Reaction Mass Consumption Per Hour: 9.21 kg of hydrogen

Volume: 0.15 m³ Length: 75 cm Width: 50 cm Height: 40 cm Mass: 38.4 kilograms

The Ms-L2-P3501 Light Magnetoplasmadynamic Thruster is the fifth version of the Ms-P3501 series. It was developed for use by small to medium-sized interstellar freighters and starships.

Nomenclature: Ms-L2-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 1,000 KS or equivalent currency

Thrust: 30 kN (3.05 metric tonnes) Power Required: 15 MW Reaction Mass Consumption Per Hour: 92.11 kg of hydrogen

Volume: 1.5 m³ Length: 1.5 m Width: 1.25 m Height: 80 cm Mass: 384 kilograms

The Ms-L3-P3501 Standard Magnetoplasmadynamic Thruster is the sixth incarnation of the Ms-P3501 series of reaction control thrusters. It was developed for use by medium-sized interstellar freighters and starships massing up to 100 kilotonnes.

Nomenclature: Ms-L3-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 2,000 KS or equivalent currency

Thrust: 300 kN (30.59 metric tonnes) Power Required: 150 MW Reaction Mass Consumption Per Hour: 921.1 kg of hydrogen

Volume: 15 m³ Length: 3 m Width: 2.5 m Height: 2 m Mass: 3.84 metric tonnes

The Ms-L4-P3501 Heavy Magnetoplasmadynamic Thruster is the seventh incarnation of the Ms-P3501 series of reaction control thrusters. It was developed for use by large interstellar freighters and starships massing several hundred kilotonnes.

Nomenclature: Ms-L4-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 5,000 KS or equivalent currency

Thrust: 3 MN (305.91 metric tonnes) Power Required: 1.5 GW Reaction Mass Consumption Per Hour: 9.21 metric tonnes of hydrogen

Volume: 150 m³ Length: 7 m Width: 5 m Height: 4.08 m Mass: 38.4 metric tonnes

The Ms-L5-P3501 Ultra-Heavy Magnetoplasmadynamic Thruster is the eighth version of the Ms-P3501 series of reaction control thrusters. It was developed for use by super-heavy freighters and starships massing over a megatonne.

Nomenclature: Ms-L5-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 8,000 KS or equivalent currency

Thrust: 30 MN (3,059.14 metric tonnes) Power Required: 15 GW Reaction Mass Consumption Per Hour: 92.11 metric tonnes of hydrogen

Volume: 1,500 m³ Length: 15 m Width: 12 m Height: 8.33 m Mass: 384 metric tonnes

The Ms-L6-P3501 Super-Heavy Magnetoplasmadynamic Thruster is the ninth and final version of the Ms-P3501 series of electric reaction control thrusters. It was developed for use by multi-kilometer length starships and space installations, mobile industrial mining platforms and freighters massing in the multi-megatonne range.

Nomenclature: Ms-L6-P3501 Production: Limited Production - Production Model and Test Model Prototypes Manufacturers Suggested Retail Price: 12,000 KS or equivalent currency

Thrust: 300 MN (30,591.48 metric tonnes) Power Required: 150 GW Reaction Mass Consumption Per Hour: 921.1 metric tonnes of hydrogen

Volume: 15,000 m³ Length: 30 m Width: 25 m Height: 20 m Mass: 3.84 kilotonnes