This is a replica of the Thunderbird 3. Reference material came from ~Librarian-bot. (found here: http://librarian-bot.deviantart.com) Excerpt from wikipedia: A reusable, vertically launched SSTO (Single Stage To Orbit) spaceship used for space rescue and maintenance of Thunderbird 5. Thunderbird 3 is 87 m (287 feet) long, with a 7 m wide body and a 24 m span (including engines). Thunderbird 3 is unique among the Thunderbird craft in having its dimensions quoted in an episode of the series: in "Give or Take a Million" Jeff Tracy states that the spacecraft stands 287 feet (87m) high. However, Brains, the designer of Thunderbird 3, said in a videotaped interview,[4] that Thunderbird 3 was "200 feet in height. " Another problem with the stated size is evident in the Thunderbird 3 launch scenes. For the craft to be over 200 feet, the ceiling of the roundhouse it passes through on take-off would need to be in excess of 50 feet high and the balcony rail 25 feet high. http://airandspace.si.edu/exhibitions/gal114/SpaceRace/sec300/sec384.htm states that the Saturn V is 111m or 363 feet high at launch, adding validity to the 200 foot height theory. The spacecraft uses chemical rockets for lift-off[disambiguation needed] and boost, and an ion drive for propulsion while in space. Thunderbird 3 is hangared beneath the "Round House" on Tracy Island, and is primarily piloted by Alan or John Tracy, although Scott often co-pilots. Since John is usually seen in Thunderbird 5, he is rarely seen piloting the spacecraft (only in "The Mighty Atom" and "Danger at Ocean Deep" and "The Uninvited", and never in a rescue situation). In "Ricochet" Virgil is seen piloting Thunderbird 3. This craft was used for space rescues in "Sun Probe", "Ricochet", "The Impostors" as well as escorting Zero X briefly in Thunderbirds Are Go.