BOEING B-314
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Re: BOEING B-314
Le B 314 Clipper sur Wikipedia.en
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The Boeing 314 Clipper was a long-range [Vous devez être inscrit et connecté pour voir ce lien] produced by the [Vous devez être inscrit et connecté pour voir ce lien] between 1938 and 1941 and is comparable to the British [Vous devez être inscrit et connecté pour voir ce lien].
One of the largest aircraft of the time, it used the massive wing of Boeing’s earlier [Vous devez être inscrit et connecté pour voir ce lien] bomber prototype to achieve the range necessary for flights across the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien].
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The Boeing 314 Clipper was a long-range [Vous devez être inscrit et connecté pour voir ce lien] produced by the [Vous devez être inscrit et connecté pour voir ce lien] between 1938 and 1941 and is comparable to the British [Vous devez être inscrit et connecté pour voir ce lien].
One of the largest aircraft of the time, it used the massive wing of Boeing’s earlier [Vous devez être inscrit et connecté pour voir ce lien] bomber prototype to achieve the range necessary for flights across the [Vous devez être inscrit et connecté pour voir ce lien] and [Vous devez être inscrit et connecté pour voir ce lien].
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Re: BOEING B-314
Design and development
The 314 was a response to Pan American's request for a flying boat with unprecedented range capability that could augment the airline's trans-Pacific [Vous devez être inscrit et connecté pour voir ce lien].
Boeing's bid was successful and on July 21, 1936, Pan American signed a contract for six.
Boeing engineers adapted the cancelled XB-15's 149 foot (45.5 m) wing, and replaced the original 850 hp (640 kW) [Vous devez être inscrit et connecté pour voir ce lien] with the more powerful 1,600 hp (1,194 kW) [Vous devez être inscrit et connecté pour voir ce lien].
The 314 was a response to Pan American's request for a flying boat with unprecedented range capability that could augment the airline's trans-Pacific [Vous devez être inscrit et connecté pour voir ce lien].
Boeing's bid was successful and on July 21, 1936, Pan American signed a contract for six.
Boeing engineers adapted the cancelled XB-15's 149 foot (45.5 m) wing, and replaced the original 850 hp (640 kW) [Vous devez être inscrit et connecté pour voir ce lien] with the more powerful 1,600 hp (1,194 kW) [Vous devez être inscrit et connecté pour voir ce lien].
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- Messages : 432
Re: BOEING B-314
The first flight was carried out with a single, conventional tail before experiments with [Vous devez être inscrit et connecté pour voir ce lien] and triple tail configurations led to the choice of a triple tail to provide more rudder area for controllability.
Pan Am ordered an additional six aircraft with increased engine power and a larger carrying capacity of 77 daytime passengers as the Boeing 314A.
The first prototype of the series flew on March 20, 1941.
Pan Am ordered an additional six aircraft with increased engine power and a larger carrying capacity of 77 daytime passengers as the Boeing 314A.
The first prototype of the series flew on March 20, 1941.
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- Messages : 432
Re: BOEING B-314
Internally, the 314 used a series of heavy [Vous devez être inscrit et connecté pour voir ce lien] and spars to create a robust fuselage and [Vous devez être inscrit et connecté pour voir ce lien].
This sturdy structure negated the need for external drag-inducing struts to brace the wings, something other flying boats of the day could not boast.
Boeing addressed the flying boats' other drag-inducing issue, stabilizing pontoons, by incorporating [Vous devez être inscrit et connecté pour voir ce lien]-style [Vous devez être inscrit et connecté pour voir ce lien] into the hull structure.
This sturdy structure negated the need for external drag-inducing struts to brace the wings, something other flying boats of the day could not boast.
Boeing addressed the flying boats' other drag-inducing issue, stabilizing pontoons, by incorporating [Vous devez être inscrit et connecté pour voir ce lien]-style [Vous devez être inscrit et connecté pour voir ce lien] into the hull structure.
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Re: BOEING B-314
The sponsons, which were broad lateral extensions placed at the water line, on both the port and starboard sides of the hull, served several purposes: they provided a wide platform to stabilize the craft while floating on water, they acted as an entryway for passengers boarding the flying boat and they were shaped to contribute additional lift in flight.
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Re: BOEING B-314
With weight an extremely sensitive concern, passengers and their baggage were weighed, with each passenger allowed up to 77 lb free baggage allowance (in the later 314 series) but then charged $3.25 per lb for exceeding the limit.
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Re: BOEING B-314
The later 314A model carried a further 1,200 US gallons (4,540 L).
To quench the radial engines’ thirst for oil, a capacity of 300 US gallons (1,135 L) was required.
To quench the radial engines’ thirst for oil, a capacity of 300 US gallons (1,135 L) was required.
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- Messages : 432
Re: BOEING B-314
Pan Am's "Clippers" were built for "one-class" luxury air travel, a necessity given the long duration of transoceanic flights.
The seats could be converted into 36 bunks for overnight accommodation; with a cruise speed of only 188 mph
(300 km/h) (typically flights at maximum gross weight were carried out at 155 mph), many flights lasted over 12 hours.
The seats could be converted into 36 bunks for overnight accommodation; with a cruise speed of only 188 mph
(300 km/h) (typically flights at maximum gross weight were carried out at 155 mph), many flights lasted over 12 hours.
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- Messages : 432
Re: BOEING B-314
The 314s had a lounge and dining area, and the galleys were crewed by chefs from four-star hotels.
Men and women were provided with separate dressing rooms, and white-coated stewards served five and six-course
meals with gleaming silver service.
Men and women were provided with separate dressing rooms, and white-coated stewards served five and six-course
meals with gleaming silver service.
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Re: BOEING B-314
Although the transatlantic flights were only operated for three months in 1939, their standard of luxury has not been matched by heavier-than-air transport since then; they were a form of travel for the super-rich, at $675 return from [Vous devez être inscrit et connecté pour voir ce lien] to [Vous devez être inscrit et connecté pour voir ce lien], comparable to a round trip aboard [Vous devez être inscrit et connecté pour voir ce lien] in 2006.
Most of the flights were transpacific with a one-way ticket from [Vous devez être inscrit et connecté pour voir ce lien] to [Vous devez être inscrit et connecté pour voir ce lien], via the "stepping-stone" islands posted at $760 (or $1,368 round-trip).[Vous devez être inscrit et connecté pour voir ce lien]
Most of the flights were transpacific with a one-way ticket from [Vous devez être inscrit et connecté pour voir ce lien] to [Vous devez être inscrit et connecté pour voir ce lien], via the "stepping-stone" islands posted at $760 (or $1,368 round-trip).[Vous devez être inscrit et connecté pour voir ce lien]
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- Messages : 432
Re: BOEING B-314
Equally critical to the 314's success was the proficiency of its Pan Am flight crews, who were extremely skilled at long-distance, over-water flight operations and navigation.
For training, many of the transpacific flights carried a second crew.
For training, many of the transpacific flights carried a second crew.
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- Messages : 432
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