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The Douglas DC-7 is a four-engine propeller-driven airliner built by the Douglas Aircraft Company in the 1950s. It was developed as an improved version of the earlier DC-6 and was intended for long-range transatlantic flights. The DC-7 was one of the last piston-engine-powered airliners to be produced before the widespread adoption of jet engines.

Here are some key features and characteristics of the Douglas DC-7:

Design: The DC-7 had a conventional low-wing design with a spacious fuselage and a retractable landing gear. It had four large piston engines mounted on the wings.

Engines: The original DC-7 models were powered by Wright R-3350 Turbo-Compound engines, which were known for their power and reliability. These engines utilized a turbocharger and an exhaust-driven power recovery turbine, allowing for increased efficiency.

Performance: The DC-7 had a cruising speed of around 365 miles per hour (590 kilometers per hour) and a range of up to 4,200 miles (6,760 kilometers). It could carry a maximum of approximately 105 passengers.

Variants: The DC-7 had several variants, including the initial DC-7 model, the DC-7B with improved engines and increased fuel capacity, and the DC-7C, which had even greater fuel capacity and range.

Historical Significance: The Douglas DC-7 played a crucial role in the development of long-haul air travel, particularly across the Atlantic Ocean. It was a popular choice for airlines operating transatlantic routes and provided a comfortable and reliable means of air transportation during the 1950s and early 1960s.

With the advent of jet engines and the introduction of jet-powered airliners, such as the Boeing 707 and Douglas DC-8, the DC-7 became less competitive and was gradually phased out of commercial service. Today, a few DC-7 aircraft are preserved in aviation museums, and some have even been restored and remain in flying condition as historic aircraft.

St Maarten Takeoff Cabin DC-7 here :    • St Maarten Takeoff Cabin DC-7  

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