The Mini Guppy is a large, wide-bodied cargo aircraft used for ferrying outsized cargo components. The Mini Guppy is only one of the Guppy line of aircraft produced by Aero Spacelines, Inc..

Mini Guppy versions

Two versions of the Mini Guppy were produced. Both versions are colloquially referred to as the "Mini Guppy".

Both Mini Guppies were built from scratch using parts borrowed from surplus Boeing 377/C-97Js. This enabled Aero Spacelines to widen the Mini Guppy cargo bay floor to 13 ft (4 m), as opposed to the 8 ft (2.4 m) restriction imposed when building directly onto a B-377 fuselage. Borrowed parts included the cockpit, wings, and tail.

Mini Guppy

The Mini Guppy, or "MG", was built with a swing-tail to facilitate cargo loading. It was powered by the original Pratt & Whitney R-4360 Wasp Major engines, enabling it to carry a maximum load of 32,000 pounds (14,500 kg), and cruise at 250 mph (400 km/h). Its cargo bay was 18 ft (5.5 m) in diameter, and a maximum of 91 ft 6 in (27.9 m) long, with a 73 ft 2 in (22.3 m) constant section.

The Mini Guppy first flew on May 24, 1967, and Aero Spacelines operated it until 1974, when it was sold to American Jet Industries. American Jet Industries sold it to Aero Union (http://www.aerounion.com/www/index.asp) in 1980, who sold it to Erickson Air Crane (http://www.erickson-aircrane.com/) eight years later. Erickson Air Crane used the Mini Guppy to haul heavy equipment until 1995, when it was retired to the Tillamook Air Museum (http://www.tillamookair.com/) in Tillamook, Oregon, where it resides today.

Mini Guppy Turbine

The second version was officially known as the Mini Guppy Turbine, or "MGT". It was the first Guppy aircraft to feature upgraded Allison 501-D22C turboprop engines. Like the MG, the MGT had a 73 ft 2 in (22.3 m) constant diameter section of the cargo hold, but the overall length had been increased to 103 ft 2 in (31.4 m), and the diameter was slightly wider: 18 ft 4 in (5.6 m). This, combined with the upgraded engines, enabled it to carry a maximum payload of 62,925 pounds (28,540 kg) -- almost twice the load the MG could handle. It was built with a swing-nose for easier cargo loading.

The MGT first took to the air on March 13, 1970, but was tragically short-lived. On May 12, 1970 the Mini Guppy Turbine was lost, along with the entire crew, in an accident during flight testing at Edwards Air Force Base, California.

Related topics

• Aero Spacelines, Inc., the company that produced the Guppy aircraft.
• Pregnant Guppy, the original Guppy.
• Super Guppy, larger successor to the Pregnant Guppy.

For more information

• "All About Guppys", the best Guppy site on the Internet. Contains extensive information and photos. (http://www.allaboutguppys.com)
• A good article on the history of the Guppy Aircraft (http://www.inventionandtechnology.com/2002/04/guppy.shtml)

External links

• Page about the Boeing B-377, the plane all Guppies were based on (http://www.boeing.com/history/boeing/m377.html)