C-46 Commando
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| C-46 Commando | |
|---|---|
| Name | C-46 Commando |
| Caption | Curtiss-Wright C-46 during World War II |
| Type | Transport aircraft |
| Manufacturer | Curtiss-Wright |
| First flight | 1940 |
| Introduced | 1942 |
| Retired | 1990s |
| Primary users | United States Army Air Forces, United States Air Force, Civil Air Transport |
| Status | Retired (some preserved) |
C-46 Commando The Curtiss-Wright C-46 Commando was a twin-engine transport aircraft produced by Curtiss-Wright Corporation that served prominently with the United States Army Air Forces and later the United States Air Force during World War II and the early Cold War. Renowned for its large cargo capacity and powerful Pratt & Whitney R-2800 Double Wasp engines, the type became famous for operations over the Hump (WWII) supplying China from bases in India, while also operating in the European Theater of Operations, Pacific War, and in postwar commercial and military roles. The airframe saw conversion to civilian freighter and passenger duties with carriers such as Pan American World Airways, American Airlines, and Civil Air Transport.
Development and Design
Curtiss-Wright developed the design from the prewar CW-20 airliner program at the behest of United States Army Air Corps procurement, responding to specifications similar to those that produced the Douglas DC-3 and Boeing 307 Stratoliner. The program’s origins involved partnerships with Howard Hughes-era procurement interest and competition with Douglas Aircraft Company for strategic airlift roles during the expansion of United States Army Air Forces transport doctrine. Design features included a capacious fuselage with a cargo floor, large clamshell cargo doors influenced by earlier civil transports like the Lockheed Model 10 Electra, and a high-mounted wing for improved ground clearance modeled after concepts promoted by William Boeing-era practices. Powerplants were the Pratt & Whitney R-2800 Double Wasp, paralleling installations on fighters such as the Republic P-47 Thunderbolt and bombers like the B-26 Marauder, giving the Commando performance advantages in hot-and-high conditions over designs like the Douglas C-47 Skytrain.
Operational History
The C-46's combat debut occurred in the China Burma India Theater where transports flew the hazardous air route over the Himalayas—the Hump—between Imphal and Kunming. Units such as the Air Transport Command employed the type alongside aircraft like the Consolidated B-24 Liberator and Douglas C-54 Skymaster to sustain Chiang Kai-shek's Nationalist government logistics. In the European Theater of Operations, C-46s participated in Operation Dragoon and resupply missions supporting NATO and Allied logistics late in the war. Postwar, surplus airframes entered civil service with carriers including Aero Flight, Pan American World Airways, and regional operators in Latin America and Africa, supporting operations in rough-field environments similar to those flown by Trans World Airlines and Air France. The type remained in military service with the United States Air Force into the 1960s and with foreign air arms such as the Republic of China Air Force and Peruvian Air Force.
Variants and Modifications
Production models ranged from the initial C-46A to the longer-fuselage C-46D and specialized conversions like the C-46E VIP transport, reflecting trends seen in variants of the Consolidated PBY Catalina and Douglas DC-4. Commercial conversions paralleled work done on the Lockheed L-188 Electra and Boeing 377 Stratocruiser with freighter adaptations supplying operators such as American Airlines and Civil Air Transport. Modifications included reinforced floors, cargo handling gear influenced by Curtiss SB2C Helldiver practices, and engine uprates shared with maintenance standards used on types like the Lockheed P-38 Lightning. Civilian freighter operations in hazardous environments led to further retrofits akin to those applied to Handley Page Halifax conversions and pioneering efforts by Everett Aviation-style firms.
Technical Specifications
General characteristics followed the twin-engine transport template established by contemporaries such as the Douglas C-47 Skytrain and Airspeed Ambassador: a wingspan and payload optimized for long-range freight similar to the Curtiss C-46 family of transports, powered by twin Pratt & Whitney radial engines also used on fighters like the Vought F4U Corsair. The large cargo hold accommodated palletized loads similar in concept to those carried by the Fairchild C-82 Packet and later C-130 Hercules evolutionary designs. Flight deck ergonomics shared similarities with transport cockpits of the era including those of the Boeing B-17 Flying Fortress and Consolidated B-24 Liberator, while avionics upgrades in postwar years paralleled retrofits on the North American B-25 Mitchell and Avro Lancaster restorations. Performance in hot-and-high theater operations compared favorably to contemporaries like the Handley Page Halifax in payload-to-power ratios.
Operators
Major operators included the United States Army Air Forces, the United States Air Force, Pan American World Airways, American Airlines, Civil Air Transport, and numerous foreign services such as the Republic of China Air Force, Peruvian Air Force, Royal Canadian Air Force, Royal Air Force (limited use), and multiple South American and African carriers. Private firms, cargo airlines, and government contractors maintained fleets into the jet age, with logistical roles analogous to those performed by later operators of the Douglas DC-6 and Lockheed Constellation. Humanitarian organizations and aerial survey companies likewise employed the type for missions similar to those undertaken by MATS-era transports and United Nations relief airlifts.
Surviving Aircraft and Preservation
Preserved examples are displayed at institutions and museums such as the National Museum of the United States Air Force, the Smithsonian National Air and Space Museum (archives and components), the Pima Air & Space Museum, and regional museums in Peru and Taiwan. Airworthy restorations by preservation groups echo efforts seen in restorations of the Douglas DC-3 and Boeing B-17 Flying Fortress, participating in airshows and historical flights. Conservation challenges mirror those encountered by curators of the Consolidated B-24 Liberator and Avro Lancaster, including corrosion control and sourcing of spare parts like Pratt & Whitney R-2800 componentry.