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Fokker S.14 Machtrainer


Advanced Jet Trainer (AJT)


Aviation / Aerospace

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Image from the Public Domain.

The Fokker S.14 Machtrainer was a promising post-World War 2 jet-powered design to emerge from The Netherlands - only twenty-one were produced.



Authored By: Staff Writer | Last Edited: 12/9/2020 | Content ©www.MilitaryFactory.com
With the rise in turbojet-powered aircraft use at the military level came the need for dedicated jet trainers. One of the first to fulfill the role became the Dutch Fokker S.14 "Machtrainer", the design arriving in the early 1950s as the shift from prop-driven types towards turbojets continued. Powered by the British Rolls-Royce "Derwent" turbojet engine, the twin-seat aircraft was not an outright success and only taken on by the Royal Netherlands Air Force (RNAF) with twenty-one examples built in all (including a single prototype).

Contemporaries of this aircraft were the American Cessna T-37 "Tweet" (1,269 built) and Lockheed T-33 "Shooting Star" (6,557 built) and French Fouga "Magister" (929 built) - all which achieved greater success than the Dutch offering.

Like other aircraft of this kind, the Machtrainer saw its roots in the 1940s as jet technology continued to be improved and become more commonplace. The Machtrainer was born as a joint venture with engine-maker Rolls-Royce, the latter looking to market its Derwent turbojet to the masses. This resulted in the "S.14" which flew for the first time, in prototype form, on May 19th, 1951.

The aircraft's external design was conventional as jet trainers of the period went - with the major exception being the side-by-side seating for the two crewmen. The single engine was buried within the fuselage and aspirated through a circular, bifurcated nose-mounted intake and exhausted through a traditional ring at the rear. The mainplanes were seated low against the sides of the fuselage and given some dihedral. The cockpit was placed just aft of the cut-off nose section. The tail unit was comprised of a single vertical fin and low-set horizontal planes. The undercarriage was of tricycle arrangement - wheeled and retractable.

As finalized, the Machtrainer had a running length of 43.7 feet, a wingspan of 39.3 feet, and a height of 15.4 feet. Empty weight was 8,300 lb while gross weight reached 12,000lb. The Rolls-Royce Derwent 8 series turbojet produced 3,450lb of thrust and provided the platform with a maximum speed of 450 miles-per-hour, a cruising speed near 365 mph, a range out to 600 miles, and a service ceiling up to 37,700 feet (requiring oxygen and pressurization for the cockpit and its crew of two). Rate-of-climb was 3,210 feet-per-minute.

The type was adopted by the RNAF through a contract order for twenty airframes in an attempt to boost to the project on the global stage. Service entry with the branch was had in 1955 and, despite some global interest, the S.14 never made headway into the world market despite the growing need for advanced jet-powered trainer-minded types. This led to the aforementioned twenty examples plus one prototype to be realized in all. Dutch S.14 trainers flew into 1967 before they were given up for good - filling their roles faithfully for their time in the air.


Specifications



Year:
1955
Status
Retired, Out-of-Service
Crew
2
Production
21 Units
Fokker - Netherlands
National flag of Netherlands Netherlands
- Training
Length:
43.64 ft (13.3 m)
Width:
39.37 ft (12 m)
Height:
15.42 ft (4.7 m)
Empty Weight:
8,300 lb (3,765 kg)
MTOW:
11,795 lb (5,350 kg)
(Diff: +3,494lb)
(Showcased weight values pertain to the Fokker S.14 production model)
1 x Rolls-Royce Derwent 8 turbojet engine developing 3,450lb of thrust.
Max Speed:
454 mph (730 kph; 394 kts)
Service Ceiling:
37,730 feet (11,500 m; 7.15 miles)
Max Range:
590 miles (950 km; 513 nm)
Rate-of-Climb:
3,210 ft/min (978 m/min)
(Showcased performance values pertain to the Fokker S.14 production model; Compare this aircraft entry against any other in our database)
None.
(Showcased armament details pertain to the Fokker S.14 production model)
S.14 "Machtrainer" - Base Series Designation; 20 production examples following single prototype completed.
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