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

Aero Spacelines Aero Spacelines, Inc. was an American aircraft manufacturer from 1960 to 1968 that converted Boeing 377 Stratocruisers into the famous Aero Spacelines Pregnant Guppy, Guppy line of airplanes, re-engineered to transport oversized cargo such as ...

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 using parts salvaged from a surplus

Boeing 377 The Boeing 377 Stratocruiser was a large long-range airliner developed from the C-97 Stratofreighter military transport, itself a derivative of the B-29 Superfortress. The Stratocruiser's first flight was on July 8, 1947. Its design was advanced ...

, but with an all-new fuselage. 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 The Pratt & Whitney R-4360 Wasp Major is an American 28-cylinder four-row radial engine, radial reciprocating engine, piston aircraft engine designed and built during World War II. First run in 1944, at , it is the largest-displacement aviation ...

Wasp Major

piston engine A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common featu ...

s, 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 for several years, ferrying contract cargo, including NASA's famed

Pioneer 10 ''Pioneer 10'' (originally designated Pioneer F) is an American space probe, launched in 1972 and weighing , that completed the first mission to the planet Jupiter. Thereafter, ''Pioneer 10'' became the first of five artificial objects to ach ...

space probe and the Goodyear Europa until it was sold to American Jet Industries in 1974. American Jet Industries sold it to

Aero Union Aero Union Corporation was an aircraft operation and maintenance company based in Chico, California, United States. It was known for operating aerial firefighting aircraft, training crews and making custom designed firefighting systems tailo ...

in 1980, who sold it to Erickson Air Crane 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 Tillamook Air Museum is an aviation museum south of Tillamook, Oregon in the United States. The museum is located at a former U.S. Navy Air Station and housed in a former blimp hangar, known as "Hangar B", which is the largest clear-span wooden ...

Tillamook, Oregon The city of Tillamook is the county seat of Tillamook County, Oregon, United States. The city is located on the southeast end of Tillamook Bay on the Pacific Ocean. The population was 5,231 at the 2020 census. History The city is named for the T ...

, where it resides today.

Mini Guppy Turbine

The second version was officially known as the Mini Guppy Turbine (MGT) and Guppy 101. It was the first Guppy aircraft to feature upgraded Allison 501-D22C

turboprop A turboprop is a turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a propelling nozzle. Air enters the intake and is compressed by the compressor. Fuel ...

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 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 Edwards Air Force Base (AFB) is a United States Air Force installation in California. Most of the base sits in Kern County, but its eastern end is in San Bernardino County and a southern arm is in Los Angeles County. The hub of the base is E ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Bibliography

External links

All About Guppys

* ttp://aviation-safety.net/database/record.php?id=19700512-0 Aero Spacelines 377MGT Mini Guppy Turbine Accident Description
NTSB Accident Report

{{Outsized cargo aircraft Mini Guppy 1960s United States cargo aircraft Four-engined tractor aircraft Low-wing aircraft Guppy, Mini Aircraft first flown in 1967 Four-engined piston aircraft Four-engined turboprop aircraft de:Guppy (Flugzeug)

Mini Guppy versions

Mini Guppy

Mini Guppy Turbine

See also

Bibliography

External links