Boeing Model 727 pioneered the rear trijet configuration, with power from three specially designed Pratt & Whitney JT8D turbofans. The trijet design was settled upon as it gave the redundancy of three engines, better climb performance than a twin and improved operating economics over a four engine jet. The 727 also has an advanced wing design with the first airliner application of triple slotted Krueger flaps.
Boeing 727
Specifications
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Capacity:
60
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Airspeed:
467 mph
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Range:
2400 nm
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Cabin Width:
11.5 ft
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Cabin Height:
6.7 ft
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Cabin Length:
92.5 ft
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Baggage Capacity:
750 ft3
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Lavatory Style:
Enclosed