The SSTO craft in the Basset Space Center.

Single-stage-to-orbit (SSTO) is a term used for space vehicles designed to achieve orbit without the use of staging, or detaching parts of themselves on the way. In the real world no such spacecraft has been built, remaining limited to studies and proposals.



At least one SSTO shuttle is in use by the Osean Federation's space program. It can carry both a crew and a payload as far as low earth orbit and uses a mass driver to launch. In the midst of the Circum-Pacific War this vehicle ferried a laser weapon module to the Arkbird, nearly being destroyed during its launch from the Basset Space Center on October 3, 2010 by the Yuktobanian military. The efforts of the Osean Air Force's Wardog Squadron allowed it to exit the atmosphere safely.[1]

Towards the end of the year, the SSTO was used to transport a V2 warhead to the Strategic Orbital Linear Gun.[2]

Assault Horizon universe

A single-stage-to-orbit vehicle known as "Armstrong" is known to be in operation.[3]

Infinity universe

There is at least one confirmed SSTO launch from the West Indies a few days before Operation Fogbound took place, as stated by Goodfellow.[4]



  1. White Bird (Part I), Ace Combat 5: The Unsung War
  2. Aces At War: A History
  3. Ace Combat: Ikaros in the Sky
  4. Rescue, Ace Combat Infinity