A

David

Darling

HOPE (H-2 Orbital Plane)

HOPE (H-2 Orbital Plane) was a proposed Japanese unmanned space plane that would be launched by an H-2 booster and used to ferry materials to and from the International Space Station. The project did progress beyond the stage of flight-testing subscale models.

 

length 16.5 m
maximum diameter 5.0 m
mass  
   total 13,000 kg
   payload 2,000 kg
   propellant 1,000 kg