Fokker F-50
Development
Fokker was hoping that they would be able to keep producing the F-27 until the end of the 20th century with step by step upgrades to keep the F-27 modern until the production line stops. In the beginning of the eighties, Fokker studied a version with new engines to replace the Rolls Royce Dart that used to power the F-27. As it turned out, a version with just a new engine wasn't interesting enough for the airline companies of the time. If Fokker was to implement the latest technologies and be able to compete with other airliners, a completely new airplane was called for. Fokker started designing and building this new airplane, the Fokker F-50, in a project called P335. CharacteristicsThe Fokker F-50 looks almost identical to the F-27 at first glance. However, there are a number of significant differences. A few of those are: - The F-27 was 23.8 (length) x 29 (span) meters, whereas the F50 is 25.25 x 29 meters. Fokker has also provided a number of technical means to reduce cabin noise, making it more quiet than the F-27: - A six-bladed (instead of four on the F-27) prop with a smaller circumference, reducing the distance between the tips of the blades and the fuselage. The load per blade was also reduced. - A very precise Phase-synchronisation system was introduced so that the left and the right propellers partially cancel out eachothers noise. - The appliance of vibration-dampers on the fuselage, tuned to exactly 102 Hz (the frequency of the blade-passage). - A double-wall construction which also dampens the sound - A silent airconditioning system. The F-50 had it's first flight in December of 1985. It's capable of transporting up to 58 passengers, has an empty weigth of 18.700 kg, and has 2 Pratt & Whitney 127 B turboprops of 2500 hp which enable it to fly at a cruise speed of mach 0.39 (472 km/h) at a max cruise ceiling of FL250 (25.000 feet).
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Specifications (wikipedia) | Fokker F-50 |
Length | 25.25 m |
Height | 8.32 m |
Wingspan | 29 m |
Engines | 2 Pratt&Whitney 127 B turboprops |
Power | 2500 hp per engine |
Weight empty / maximum | 18.700 / 20.820 kg |
Speed cruise / maximum | 472 km/h / Mach 0.39 |
Flight range | 2038 - 4017 km |
Ceiling | FL250 (7620 m) |
Number built | 213 |
First flight | December 1985 |