By David Brown

Imposing from any viewpoint, the Super Guppy can carry an amazing variety of shapes inside its 25 ft wide, 25 ft high, and 96 ft long cargo compartment. Based on the Boeing Stratocruiser and modified with a greatly enlarged fuselage, turboprop engines, reinforced landing gear, and a side-opening cargo nose, this is the only flying example of the five Super Guppies built. (NASA)When a giant turboprop cargo plane recently droned into Long Beach in Southern California, it marked the latest chapter in a fascinating tale.

When NASA needed to move a large box-shaped structure some 30 ft long and of 10,000lb weight across country from Southern California to NASA Langley in Virginia, they did not have to look far. As it happens, NASA owns and operates the sole remaining operational Turbine Super Guppy (out of the five built during the ‘60s to carry outsize pieces of cargo). The Super Guppy (NASA 941) is currently based at the NASA facility in El Paso, Tex., and flew from there to the west coast to pick up its cargo. The payload on this occasion was a composite, double-deck multi-bay box made for NASA’s Environmentally Responsible Aviation (ERA) project. This test article represents a 75 percent scale version of the center section of a hybrid wing-body aircraft (think of a scaled-up X-48, flown at NASA Dryden some years ago) but now built of a lightweight, damage tolerant stitched-composite structural concept dubbed PRSEUS (Pultruded Rod Stitched Efficient Unitized Structure) built by Boeing Research and Technology in Huntington Beach, Calif. and assembled in Long Beach. The innovative structure comprises carbon-epoxy panels, which are infused with resin and cured by vacuum pressure without having to use a large autoclave, which would normally be required.