UNA EXPRESS-II
UNA EXPRESS-II
Microgravity Test Platform
Microgravity Test Platform
Microgravity Test Platform
UNA EXPRESS-II
UNA EXPRESS-II is a two-stage suborbital launch vehicle designed to reach the Kármán line at 100 km.
Powered by the VOLTA-52H electric pump-fed engine, it will demonstrate precision guidance, stage separation, and fairing separation toward UNA EXPRESS-III.
Height
11.5 m
Diameter
1 m
Max Altitude
100 km
Engine
VOLTA-52H
Launch Site
Korea
VOLTA-52H engine
VOLTA-52H is the electric pump-fed engine for UNA EXPRESS-II.
Its modular architecture integrates the pump, motor, inverter, battery, valves,
and combustor for future clustering.
Designed for 52 kN at sea level and 63.5 kN in vacuum, it is undergoing performance testing.
Thrust
52 kN
Propellant
LOX / JET A-1
Propellant Feed System
Elecpump-fed
UNA EXPRESS II
UNA EXPRESS-II
UNA EXPRESS-II is a two-stage suborbital launch vehicle designed to reach the Kármán line at 100 km.
Powered by the VOLTA-52H electric pump-fed engine, it will demonstrate precision guidance, stage separation, and fairing separation toward UNA EXPRESS-III.
UNA EXPRESS-II is a two-stage suborbital launch vehicle designed to reach the Kármán line at 100 km.
Powered by the VOLTA-52H electric pump-fed engine, it will demonstrate precision guidance, stage separation, and fairing separation toward UNA EXPRESS-III.
Height
Height
11.5 m
11.5 m
Diameter
Diameter
1 m
1 m
Max Altitude
Max Altitude
100 km
100 km
Engine
Engine
VOLTA-52H
VOLTA-52H
Launch Site
Launch Site
Korea
Korea
Korea
VOLTA-52H engine
VOLTA-52H is the electric pump-fed engine for UNA EXPRESS-II.
Its modular architecture integrates the pump, motor, inverter, battery, valves,
and combustor for future clustering.
Designed for 52 kN at sea level and 63.5 kN in vacuum, it is undergoing performance testing.
Thrust
52 kN
Propellant
LOX / JET A-1
Propellant Feed System
Elecpump-fed
VOLTA-52H engine
VOLTA-52H is the electric pump-fed engine for UNA EXPRESS-II.
Its modular architecture integrates the pump, motor, inverter, battery, valves,
and combustor for future clustering.
Designed for 52 kN at sea level and 63.5 kN in vacuum, it is undergoing performance testing.
Thrust
52 kN
Propellant
LOX / JET A-1
Propellant Feed System
Elecpump-fed
© 2026 UNASTELLA.
All rights reserved.
© 2026 UNASTELLA. All rights reserved.
© 2026 UNASTELLA.
All rights reserved.