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.
The 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).
|Specifications (wikipedia)||Fokker F-50|
|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)|
|First flight||December 1985|