Boeing 707

Boeing 707
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Name	Boeing 707
Caption	A Pan American World Airways Boeing 707 in flight
National origin	United States
Manufacturer	Boeing
First flight	December 20, 1957
Introduction	October 26, 1958
Primary users	Pan American World Airways, Trans World Airlines, American Airlines

Boeing 707. The Boeing 707 is a United States-built commercial airliner developed and manufactured by Boeing and Douglas. It was designed by a team led by Maynard Pennell, Ed Wells, and Jack Steiner, and first flew on December 20, 1957, with Pan American World Airways as its launch customer, alongside Trans World Airlines and American Airlines. The Boeing 707 played a significant role in the development of modern commercial aviation, influencing the design of subsequent aircraft, including the Boeing 727, Boeing 737, and Airbus A300.

Introduction

The Boeing 707 was a major milestone in the history of aviation, marking the beginning of the jet age in commercial aviation. It was designed to be faster, more efficient, and more comfortable than its propeller-driven predecessors, such as the Douglas DC-7 and Lockheed Constellation. The Boeing 707 was also influenced by the design of the de Havilland Comet, the first commercial jet airliner, which was developed by de Havilland in the United Kingdom. The Boeing 707 was powered by Pratt & Whitney jet engines, which provided a significant increase in power and efficiency compared to earlier piston engines, used in aircraft such as the Douglas DC-4 and Boeing 314.

Design and Development

The design and development of the Boeing 707 involved a team of engineers and designers from Boeing, led by Maynard Pennell, Ed Wells, and Jack Steiner. The team drew on experience from previous Boeing projects, including the Boeing B-47 Stratojet and Boeing B-52 Stratofortress, as well as the de Havilland Comet. The Boeing 707 featured a number of innovative design elements, including a swept wing and a podded engine configuration, similar to the North American F-100 Super Sabre and McDonnell Douglas F-4 Phantom II. The aircraft was also designed to be highly aerodynamic, with a streamlined fuselage and a dihedral wing, similar to the Convair 880 and Sud Aviation Caravelle. The Boeing 707 was tested at the NASA Ames Research Center and the FAA William J. Hughes Technical Center, alongside other aircraft such as the Douglas DC-8 and Convair 990 Coronado.

Operational History

The Boeing 707 entered service with Pan American World Airways on October 26, 1958, and quickly became a popular choice for long-haul flights, alongside the Douglas DC-8 and Convair 880. The aircraft was used by a number of major airlines, including Trans World Airlines, American Airlines, and United Airlines, as well as smaller regional airlines, such as National Airlines and Eastern Air Lines. The Boeing 707 was also used for cargo and military operations, including the USAF Strategic Air Command and the RAF Transport Command, alongside aircraft such as the Lockheed C-130 Hercules and Boeing KC-135 Stratotanker. The Boeing 707 played a significant role in the development of modern commercial aviation, influencing the design of subsequent aircraft, including the Boeing 727, Boeing 737, and Airbus A300, as well as the McDonnell Douglas MD-80 and Tupolev Tu-154.

Variants

The Boeing 707 was produced in a number of variants, including the Boeing 707-100, Boeing 707-200, and Boeing 707-300, as well as the Boeing 707-400 and Boeing 707-700. The aircraft was also modified for use as a cargo aircraft, including the Boeing 707-320C and Boeing 707-420C, similar to the Douglas DC-8-50 and Convair 880M. The Boeing 707 was also used as a testbed for a number of experimental programs, including the NASA X-15 and X-20 Dyna-Soar programs, alongside aircraft such as the North American X-15 and Martin Marietta X-24.

Specifications

The Boeing 707 had a number of key specifications, including a length of 152 feet 11 inches (46.61 meters), a wingspan of 130 feet 10 inches (39.90 meters), and a height of 42 feet 5 inches (12.93 meters), similar to the Douglas DC-8 and Convair 880. The aircraft had a maximum takeoff weight of 336,000 pounds (152,400 kilograms) and a cruise speed of 540 knots (1,000 km/h), alongside aircraft such as the Sud Aviation Caravelle and Tupolev Tu-104. The Boeing 707 was powered by four Pratt & Whitney jet engines, which provided a total of 80,000 pounds-force (356 kN) of thrust, similar to the Rolls-Royce Conway and General Electric CF6 engines used in other aircraft, such as the McDonnell Douglas DC-10 and Lockheed L-1011 TriStar. Category:Aircraft