C-133 Cargomaster

C-133 Cargomaster military transport in flight

The Douglas C-133 Cargomaster, a four-engine, turboprop transport, was larger and faster then earlier Douglas military cargo airplanes. The Cargomaster went into production without a prototype and had an unusual circular fuselage with top-mounted wings.

The C-133 could fly the equivalent of 22 loaded railroad boxcars nonstop between Los Angeles, Calif., and New York for about 5 cents per ton per mile. It carried fully assembled tanks and transported the Douglas-built Thor intermediate-range ballistic missiles. Douglas built and delivered the last Cargomasters in 1961. NASA used Cargomasters to drop-test early space capsules and to transport a variety of space products.

Douglas built 50 Cargomasters, but after the C-133, Douglas did not built transports specifically for the military for another 10 years.

Specifications
First flight: April 23, 1956
Model number: C-133
Wingspan: 179 feet 8 inches
Length: 157 feet 6 inches
Height: 48 feet 3 inches
Ceiling: 19,000 feet
Range: 3,975 miles
Speed: 359 mph
Power plant: Four 6,500-horsepower P&W T34-P-7WA turboprop engines
Accommodation: 10 crew, 200 passengers or 80,000 pounds of equipment