Orbital Transfer Vehicles — Space Hardware Marketplace

RPS Orbital Transfer Vehicle (LEO-to-MEO/GEO)

• Propellantscryogenic LOX/methane
• Thrust3307 lbf
• Specific impulse (vacuum)374 s

Centurion-powered OTV that rideshares to LEO and self-maneuvers to MEO or GEO.

RPS Orbital Transfer Vehicle (Lunar Transfer)

• Propellantscryogenic LOX/methane
• Starting orbit185 km LEO parking orbit
• Target orbitNear-Rectilinear Halo Orbit (NRHO)

Centurion-powered OTV performing ballistic lunar transfers from LEO parking orbit to NRHO.

Supernova

• PropulsionSolar Thermal Propulsion (STP) with deployable mirror concentrators
• Delta-v~6 km/s
• TaskabilityOn-standby, taskable in minutes

Maneuverable, solar-thermal-propulsion spacecraft delivering ~6 km/s of delta-v with on-demand taskability from LEO to cislunar space.

Waypoint (Orbital Depot)

• FunctionFuel storage, cargo staging, fleet coordination
• Target timelineMid-2029, alongside Orbot-3
• StatusConceptual/roadmap infrastructure

Persistent orbital depot for fuel storage, cargo staging, and fleet coordination, targeted for mid-2029.

Orbot-3 / Waypoint-1

• PlatformFull Orbot
• OrbitSun-synchronous orbit
• Launch dateMid 2029

First full-scale, commercially operational Orbot combining all proven technologies, planned for mid 2029.

Orbot-1 and Orbot-2 (Twin RPO/D Demonstrators)

• Form factor200 kg bus, up to 100 kg payload
• Spacecraft count2 (twin pair)
• OrbitSun-synchronous orbit

Twin 200 kg ESPA-class spacecraft for rendezvous, proximity operations, and docking demonstrations, planned for early 2028.

Chimera LEO 1 (Flight Demonstrator)

• Vehicle typeOrbital transfer vehicle (OTV) demonstrator
• LaunchSpaceX Transporter-6 rideshare mission
• PropulsionNon-toxic hypergolic engine, 900N thrust

Epic Aerospace's first flown orbital transfer vehicle, launched on SpaceX Transporter-6 to validate its in-house propulsion, structure, and…

Chimera GEO

• Vehicle typeOrbital transfer vehicle (OTV) / space tug
• GTO-to-GEO payload capacityUp to 2,000 kg
• GTO-to-GEO transfer timeUnder 1 month

Orbital transfer vehicle for GTO-to-GEO insertion, hosted-payload station-keeping, end-of-life services, and cislunar trans-lunar injection.

Chimera LEO

• Vehicle typeOrbital transfer vehicle (OTV) / space tug
• Apogee kick capabilityApproximately ±450 km
• LTAN change capabilityApproximately 3 hours change in under 90 days

Orbital transfer vehicle (space tug) for low Earth orbit maneuvers such as apogee kicks and orbital plane changes.

Vigoride

Vigoride is Momentus' small orbital transfer and service vehicle that uses a water-fed microwave electrothermal plasma thruster to…

Nyx

• ConfigurationConical reentry capsule + cylindrical service module
• Diameter (Nyx Earth)4 m
• Height (Nyx Earth)7 m

Nyx is a reusable European reentry capsule developed by The Exploration Company to deliver cargo to and from…

Mira

• Propulsion typeNon-toxic bipropellant (nitrous oxide/ethane), 8x Saiph thrusters in 4 pairs
• Thrust27 N per thruster, ~216 N total (upgraded 2025 design)
• Specific impulse290 s

Mira is Impulse Space's flight-proven orbital transfer vehicle that provides precise, on-demand payload hosting and last-mile delivery across…

Sherpa-ES

• Vehicle typeHigh-energy bi-propellant orbital transfer vehicle
• Port interface24" ESPA standard
• Propulsion systemBenchmark Space Systems Polaris (bipropellant)

High-energy chemical OTV with 6× more propellant than Sherpa-LTC, targeting GTO, GEO, MEO, trans-Lunar and cislunar orbits.

Sherpa-LTE

• Vehicle typeElectric propulsion orbital transfer vehicle
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Electric propulsion OTV with Apollo Fusion Hall effect thruster, >6 km/s delta-V enabling GEO, cislunar, and Earth-escape delivery.

Sherpa-LTC

Chemical propulsion OTV with green bipropellant (HTP+IPA), 4×22 N thrusters, and dual-mode operation for rapid orbital transfer.

Sherpa-AC

• Vehicle typeFree-flyer with attitude determination and control
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Attitude-control variant of Sherpa-FX with 2-way RF comms, reaction wheels, and hosted payload support up to 1 year…

Sherpa-FX

• Vehicle typePassive free-flyer (no propulsion, no attitude control)
• Port interface24" ESPA standard
• Maximum payload capacity300 kg (reconfigurable)

Passive free-flying CubeSat deployer for up to 16 spacecraft from a single ESPA port; no propulsion. First flight…

Universal Upper Stage “Fregat”

In accordance with the specification of the customer. On the basis of the basic upper stage "Fregat" a…