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10 minute refresh Boeing 707/720 Slideshow
Title: Boeing 707/720 Slideshow Description: This was my First video posted to youtube while still experimenting.
The Boeing 707 is a four-engine commercial passenger jet airliner developed by Boeing in the early 1950s. Its name is most commonly spoken as "Seven Oh Seven". Boeing delivered a total of 1,010 Boeing 707s, which dominated passenger air transport in the 1960s and remained common through the 1970s. Boeing also offered a smaller, faster version of the aircraft that was marketed as the Boeing 720.
Although it was not the first commercial jet in service (that distinction belongs to the de Havilland Comet), the 707 was the first to be commercially successful, and is credited as ushering in the Jet Age. It established Boeing as one of the largest makers of passenger aircraft, and led to the later series of aircraft with "7x7" designations.
The 707 was based on an aircraft known as the 367-80. The "Dash 80" took less than two years from project launch in 1952 to rollout on 14 May 1954. This was powered by the Pratt & Whitney JT3C engine which was the civilian version of the J57 used on many military aircraft of the day including the F-100, F-101, F-102, and the B-52.
The prototype was conceived for both military and civilian use: the United States Air Force was the first customer for the design, using in the KC-135 Stratotanker midair refueling platform. It was far from certain that the passenger 707 would be profitable. At the time, Boeing was making nearly all of its money from military contracts: its last passenger transport, the Boeing 377 Stratocruiser, had netted the company a $15 million loss before it was purchased by the Air Force as the KC-97 Stratotanker.
The 132-inch (3,400 mm) fuselage of the Dash 80 was only wide enough to fit two-plus-two seating (in the manner of the Stratocruiser). Boeing soon realized that this would not provide a viable payload, so decided to widen the fuselage to 144 inches (3,700 mm), the same as the KC-135 Stratotanker, which would allow six-abreast seating - and the shared use of the KC-135's tooling. However, Douglas had launched its DC-8 with a fuselage width of 147 inches (3,700 mm). The airlines liked the extra space, and so Boeing was obliged to increase the 707's cabin width again, this time to 148 inches (3,800 mm). This meant that little of the tooling that was made for the Dash 80 was usable for the 707. The extra cost meant the 707 did not become profitable until some years after it would have if these modifications were not necessary.
The first flight of the first production 707-120 took place on 20 December 1957, and FAA certification followed on 18 September 1958. A number of changes were incorporated into the production models from the prototype. A krueger flap was installed along the leading edge. The height of the vertical fin was increased, and a small fin was added to the underside of the fuselage, and acted as a bumper during excessively nose high takeoffs. Author:meliacab1 Tags: 707, 720, airliners, boeing, jets, OneTrueMedia, passenger Duration: 142 seconds View count: 1767 Rating: 4.83 (6 ratings) Flash:http://www.youtube.com/v/5ffy6gWWemg&f=gdata_videos Watch page:http://www.youtube.com/watch?v=5ffy6gWWemg
