Aero Spacelines Super Guppy

The Aero Spacelines Super Guppy is a large, wide-bodied cargo aircraft that is used for hauling outsize cargo components. It was the successor to the Pregnant Guppy, the first of the Guppy aircraft produced by Aero Spacelines. Five were built in two variants, both of which were colloquially referred to as the "Super Guppy".
The Super Guppy is "the only airplane in the world capable of carrying a complete S-IVB stage", the third stage of the Saturn V rocket. The Super Guppy performed this role several times during the Apollo program.
Design and development.
The first, the Super Guppy, or "SG", was built directly from the fuselage of a C-97J Turbo Stratocruiser, the military version of the 1950s Boeing 377 Stratocruiser passenger plane. The fuselage was lengthened to , and ballooned out to a maximum inside diameter of , the length of the cargo compartment being . The floor of the cargo compartment was still only wide, as necessitated by the use of the Stratocruiser fuselage.
In addition to the fuselage modifications, the Super Guppy used Pratt & Whitney T-34-P-7WA turboprop engines for increased power and range, and modified wing and tail surfaces. It could carry a load of and cruise at .
The second version was officially known as the Super Guppy Turbine (SGT), although it used turboprop engines like the first Super Guppy. This variant used Allison 501-D22C turboprops. Unlike the previous Guppy, the main portion of its fuselage was constructed from scratch. By building from scratch, Aero Spacelines was able to widen the floor of the cargo compartment to . The overall cargo-compartment length was increased to , and the improved fuselage and engines allowed for a maximum load of . These design improvements, combined with a pressurized crew cabin that allowed for higher-altitude cruising, allowed the SGT to transport more cargo than its predecessors.
The SGT retained only the cockpit, wings, tail, and main landing gear of the 377. The nose gear was taken from a Boeing 707 and rotated 180 degrees. This dropped the front of the aircraft slightly, leveling the cargo-bay floor and simplifying loading operations.
In the early 1970s, the two Super Guppy Turbines were used by Airbus to transport airplane parts from decentralized production facilities to the final assembly plant in Toulouse. In 1982 and 1983, two additional Super Guppy Turbines were built by Union de Transports Aériens Industries in France after Airbus bought the right to produce the aircraft. The four Super Guppies have since been replaced by the Airbus Beluga, capable of carrying twice as much cargo by weight.
Aircraft.
All bar one Super Guppies remain either in service or on display.