Boeing 307 Stratoliner – fotografie a videá

Komisia Boeing Model 307 Stratoliner bolo prvé komerčné dopravné lietadlo, ktoré vstúpilo do prevádzky s pretlakovou kabínou. Táto funkcia umožnila lietadlu plaviť sa v nadmorskej výške 20 000 stôp (6 000 m), čo je vysoko nad mnohými poruchami počasia. Tlakový rozdiel bol 2,5 psi (17 kPa), takže pri 14 700 stopách (4 480 m) bol tlak vzduchu v kabíne ekvivalentný nadmorskej výške 8 000 stôp (2 440 m). Model 307 mal kapacitu pre šesťčlennú posádku a 33 cestujúcich. Okrem civilnej služby bol tiež lietaný ako Boeing C-75 Stratoliner vzdušnými silami armády Spojených štátov, ktoré ho používali ako nákladné lietadlo s dlhým doletom.

Zdrojový: Boeing 307 Stratoliner na Wikipédii

Komisia Boeing 307 Stratoliner was the first commercial airliner to feature a pressurized cabin, allowing it to fly at higher altitudes and avoid bad weather. It was developed from the Boeing B-17 Flying Fortress bomber and entered service in 1938 with Pan American Airways. The 307 had a capacity of 33 passengers and a crew of five, and could fly at a maximum speed of 246 mph (396 km/h).
The 307 was also the first airliner to offer a flight engineer position, who monitored the four Wright R-1820 Cyclone radial engines and the cabin pressure. The 307 was a technological breakthrough in aviation history, but it faced competition from the Douglas DC-3 and DC-4, which were cheaper and more reliable. Only 10 307s were built, and none of them are in service today. The last surviving 307, named the Flying Cloud, is on display at the Smithsonian National Air and Space Museum in Washington, D.C.