Самолеты (сортировка по:)
Страна Конструктор Название Год Фото Текст

Fokker V27/V29/V37

Страна: Германия

Год: 1918

Fokker - E.V/D.VIII - 1918 - Германия<– –>Fokker - V30 - 1918 - Германия


A.Weyl Fokker: The Creative Years (Putnam)


The Fokker V.27

   The parallel development with a water-cooled engine was the Fokker V.27 (Factory No. 2734). It was generally similar to the V.26/28 but somewhat larger and heavier. As the V.27 was also intended for the second fighter trials, Fokker chose the new 195-h.p. Benz Bz.IIIb V-eight engine, both geared and ungeared. This engine was, at that time, the most advanced of the various high-speed eight-cylinder developments that were more or less based on the Hispano-Suiza.
   This Benz engine was shorter than the Mercedes and permitted a more compact installation. In the V.27 advantage was taken of this fact, and the Benz was neatly installed and cowled, with a circular frontal radiator that was fitted with shutters. Fokker was very pleased with it.
   It seems that both versions of the Bz.IIIb engine were fitted to the V.27. In its original form the aircraft had the direct-drive engine; in its ultimate form, as an armoured trench fighter, it had the geared version.
   The V.27 wing was wholly covered with plywood; the ailerons were plain surfaces, inset from the tips as on the V.27’s contemporaries. The cabane struts were widely splayed to reduce the cantilever span as much as possible.
   Schuetzenmeister made two officially observed climbs on the V.27 on June 5, 1918. The time recorded for the first was poor because the engine was not running properly, but the second was a fully competitive effort; better, in fact, than the performance of other fighters with the same engine.
   The report on the V.27’s handling characteristics stated that landing was easy and the stalling speed low, but the aircraft had an unpleasant tendency to spin abruptly when stalled. Possibly the centre of gravity was rather far aft.
   After the fighter trials, Fokker learned that the Army wanted an armoured single-seat fighter for the protection of infantry support aircraft and for ground-attack duties. A design requirement was that the aircraft structure must be able to withstand hits without collapsing. A new Service type category DJ had been created, and the A.E.G. were building all-metal prototypes.
   Fokker thought the V.27 might meet this requirement if it were armoured. The radiator seemed to be conspicuously vulnerable, but Platz produced an idea for protecting it. This consisted of a disc of armour plate that was fitted to the airscrew hub and faired by a large-diameter spinner. The armour disc completely covered the radiator, consequently six radial blades were attached to its rear surface to drive, cooling air through the radiator. This cooling fan seems to have worked so well that Fokker wanted to use it on a new interceptor fighter that needed no armour.
   Later, Fokker obtained a patent (D.R..P. 335,745 of October 2, 1918) for a simplification of this arrangement. The patent drawings show a flat piece of armour plate bolted to the airscrew. The armour could be of different shapes and had various slots in it; apparently there were to be neither spinner nor fan blades. Platz recalls that a scheme of this kind was tried but remained experimental.
   The armour on the V.27 fuselage consisted of 2-5-mm. steel plate on the sides and bottom of the fuselage and behind the cockpit. The pilot’s seat had been moved forward to reduce the area that required armour plate, consequently the wing cut-out had to be enlarged. The armoured version of the V.27 was given the new designation V.37.
   The V.37 was either too late for consideration or not promising enough to warrant adoption as a Service type. It does not seem to have undergone a type test, nor was a structural examination made.

The third fighter trials

   From October 15 to October 31, 1918, the third and last comparative trials for the selection of fighter aircraft were held at Adlershof. The object was the selection of types for quantity production during the winter in readiness for the offensives planned for the spring of 1919.
   This time it was indicated that it would be preferable for prototypes to have the 185-h.p. B.M.W.IIIa engine. It was intended that in production aircraft this would be supplanted by the more powerful 240-h.p. B.M.W. IV, which was expected to start coming off the production line in December. It was hoped that fighters with engines of 240-350 h.p. would anticipate developments on the Allied side. This was an optimistic view, because the 300-h.p. Hispano-Suiza and the new, light 350-h.p. and 400-h.p. air-cooled radial engines developed in Britain would have made their appearance in Allied fighters. The aerodynamic and technological advances in German airframe design might not have compensated for the lack of engine power and engine development.
   Prototypes with 145-220-h.p. rotaries were also admitted to the competition as secondary choices. No official decision on the production of further rotary-powered fighters had been taken, because there was insufficient evidence of the serviceability of these engines under operational conditions with the ersatz castor-oil lubricant. Moreover, the supply of this oil was still uncertain.
   The IdFlieg therefore made it plain that there was little purpose in selecting a rotary-powered type at this time, except perhaps for the equipment of the home-defence fighter squadrons. These units had come to be increasingly important, owing to the increase of deep-thrusting bombing raids by the Allies.
   For the initial selection, nine prototypes with the B.M.W.IIIa engine were presented. The V.36 was one of Fokker’s entries, the V.29 the other.
   The Fokker V.29 was a parasol monoplane, generally similar to the Fok. D.VIII except in power-plant and size. Although larger than the D.VIII it was smaller and lighter than the V.27.
   The Pfalz Works entered two high-performance biplanes, the Pfalz D.XVf and a “special Df” fighter experiment. Both were developments of the Pfalz D.XII, but they were cleaned up and had a minimum of external bracing. Like all Pfalz products, their workmanship and materials were impeccable.
   From the L.F.G. came a parasol monoplane, the Roland D.XVII. This could not compare with the Pfalz or Fokker types. Albatros contributed the Alb. D.XII, a braced biplane of low structural weight and a promising come-back by this firm. It was the lightest of all the B.M.W.- powered types but did not look robust enough for front-line service.
   Also very light and promising was the Rumpler D.I, now modified and improved and displaying excellent detail design. The Zeppelin D.I re-appeared, its defective wing joints reinforced after the tragedy of the second trials. This all-metal cantilever biplane had passed a stiff structural examination at Adlershof. It now carried a jettisonable fuel tank externally under the fuselage.
   Finally, there was the latest version of the Junkers D.I (by this time, Fokker and Junkers had separated). One or two of these Ju. D.Is had been sent to fighter squadrons for evaluation. They had been quickly returned as entirely unsuitable, with acrid comments on their peculiar flying qualities. Now the Dessau firm was trying again.
   Six rotary-powered prototypes participated in the trials. Fokker’s two entries were the Fok. D.VIIIe and the Fok. D.VIIIg. The Siemens-powered Fok. D.VIIIs did not appear, owing to either a lack of a suitable airscrew or engine trouble.
   The Kondor Works submitted two versions of a cantilever parasol monoplane: the Kondor E.III with UR.III, and the Kondor E.IIIa with 200-h.p. Goebel Goe.IIIa. A strut-braced parasol, the Roland D.XVI, was entered by the L.F.G.; it had an Sh.3 engine. Also powered by the Sh.3 was the steep-climbing Albatros D.XI, a biplane. A special new Siemens type could not be completed in time, and the firm was represented by a standard Siemens-Schuckert D.IV biplane. This type was already in operational use on the Western Front and was proving successful.
   The trials followed the pattern of the previous competition: the climbing tests were flown by the pilots of the firms, under the supervision of the Adlershof technicians. These were followed by the usual speed-comparison flights. Several “heats” were flown until a reliable assessment of speeds was obtained.
   For the B.M.W.-powered types the first speed comparison was flown at 1-0 km. altitude and without use of the engine’s mixture control. After this, the aircraft were raced between 3-0 and 5-0 km. altitude with full use of the mixture control. A Fok. D.VIIF was flown in this test, presumably for purposes of comparison.
   At a height of about 4-0 km. (13,000 ft) the Fokker V.29 and Junkers D.I were the fastest aircraft. The Junkers was slightly the faster below that height; above it, the V.29 was faster. The Fokker V.36 was next; it was rather slow at low altitudes but still better than the Fok. D.VIIF; at higher altitudes the V.36 was considerably faster than the Fok. D.VIIF. Following the Fokker V.36 in level-speed performance came the Rumpler D.I and Albatros D.XII with little to choose between them. Bringing up the rear, in descending order, were the Pfalz Df No. D.8364/17, Fokker D.VIIF, Zeppelin D.I, Pfalz D.XVf, and the Roland D.XVII.
   Of the Siemens-powered fighters, the Roland D.XVI proved faster than the Siemens-Schuckert D.IV and, up to 4-0 km. altitude, faster than the B.M.W.-powered Fok. D.VIIF. At 4 0 km., the Roland D.XVI was as fast as the Fok. D.VIIF; above that altitude it was slower.
   The Fok. D.VIIIe proved considerably faster than the Kondor E.III with the same UR.III engine.
   In the climbing tests, the Rumpler D.I was unquestionably the best: it climbed to 7-0 km. (23,000 ft.) in 24-7 minutes. The next-best performance was put up by the Roland D.XVI, which needed 26-1 minutes to reach the same height. The Fokker V.36 took 31-1 minutes; for some reason the V.29 was unplaced (the barograph often froze, and this rendered climbs invalid). Both the Rumpler D.I and Albatros D.XII managed to reach nearly 8-0 km. (26,300 ft.) with their regulation military load.
   In flying qualities the Fokker V.29 was rated to be about the best of the aircraft. Its manoeuvrability and behaviour when gliding and diving were judged to be superior to the corresponding characteristics of the Fok. D.VIIF. The take-off was regarded as good but rather long: this was attributable to the higher wing loading. For the same reason the landing speed was rather high, and the V.29’s tendency to float was adversely criticized.
   The Fokker V.36 was not so well liked, because its aileron control was rather heavy, but in general it was regarded as an improvement over the standard Fok. D.VIIF.
   The Junkers D.I was cordially disliked. It was obvious that the Junkers works had failed to profit from Fokker’s skill as a test pilot. This Junkers failing persisted: even ten or more years after the war, Junkers aircraft usually had flying characteristics inferior to those of contemporary Fokker types, despite extensive experimental work at Dessau.
   In general handling qualities the Albatros D.XII was judged to be superior to the standard Fok. D.VII. However, the structure of the Albatros flexed too much in flight, giving an impression of insufficient strength.
   The Rumpler D.I was thought to be good, on the whole, apart from a tendency to slip inwards and spin on steep turns. To save weight, its fuselage had been kept too short.
   In the final assessment, the Fokker V.29 and Rumpler D.I shared top place; there was a tie for second place between the Fokker V.36 and the special Pfalz Df. The Roland D.XVI would have been placed third if its handling qualities had been better.
   The Armistice was signed before the final choice was made; but both Fokker and Rumpler could have counted on receiving substantial contracts for the V.29 and Ru. D.I respectively.
   And yet the supervention of the Armistice may have been a blessing for Fokker. Platz had won his fight for plain, unbalanced ailerons, but his latest products were on the verge of attaining critical speeds for wing flutter. If the V.29 had gone into operational use, wing flutter and failures would have followed inevitably. Equally inevitably, Fokker would have been under grave suspicion, yet this time he would have been innocent.


J.Herris, J.Leckscheid Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI (A Centennial Perspective on Great War Airplanes 55)


Fokker V27

  The Fokker V27, Works Number 2734, was another attempt to achieve the performance benefits of the monoplane configuration while solving the pilot’s field of view problem that had led to rejection of the earlier Fokker monoplane fighter prototypes. In the V27, the wing was not mounted on the fuselage, which minimized aerodynamic drag, but was moved above the fuselage just above the pilot’s eye level, giving the pilot exceptional fields of view both above and below the wing.
  The V27 was powered by the experimental 195-200 hp Benz Bz.IIIbo ungeared V-8 engine. It had good performance but the experimental V-8 engine was not yet reliable enough for production and the V27 remained a prototype. Built in April 1918, the V27 was sent to the Second Fighter Competition and was assessed as the best fighter at the competition using the 200 hp Benz Bz.IIIbo. However, vibration prevented production of this engine to the Armistice.
  The V27 was shipped to Idflieg department A3 after it was repaired.
  Interestingly, the Fokker V29, one of the winners of the Third Fighter Competition, used the same configuration as the V27; the main difference was that the V29 used the reliable, production BMW IIIa engine instead on an experimental Benz V-8 engine.
  Low drag was the key benefit of cantilever monoplane wings, and the parasol configuration combined that with exceptional field of view. The drawback was that the cantilever wing, even if strong enough to safely support the aerodynamic loads, was not as stiff in torsion as the biplane wing cellule with N-struts, with the result that aileron effectiveness was not as good as that of a biplane.

Fokker V27 Specifications
Engine: 195-200 hp Benz Bz.IIIbo
Wing: Span 9.68 m
Area 14.3 m2
General: Length 6.34 m
Height 3.0 m
Empty Weight 602 kg
Loaded Weight 840 kg
Maximum Speed: 200 km/h



Fokker V29

  After winning the first two fighter competitions, Fokker entered the Third Fighter Competition in the best position of any manufacturer. The Fokker D.VII was the mainstay of the German fighter units and the BMW-powered version was generally acknowledged as the best all-around fighter in combat. Fokker’s D.VII was being built not only by Fokker but by two other manufacturers under license. After a rocky start due to two fatal wing failures, Fokker D.VIII production was back in full swing.
  Fokker’s entries in the third competition built on these successes. The V28 was a D.VIII prototype with the more powerful 160 hp Siemens-Halske rotary, the V36 was a modified D.VII, and the V29 (Works Number 2736) was a parasol monoplane derivative of the D.VII that was a high-altitude fighter.
  As early as June 1918 the V29 was mentioned in the Idflieg monthly report as it was undergoing flight testing equipped with the BMW IIIa engine. In July Idflieg stated that, according to the results of the flight tests, the aircraft in its present form was not yet suitable as a replacement for the Fokker D.VII with BMW engine. The V29 was tested with two different wings of 13.3 and 14.3 square meters wing area.
  Using the same basic configuration as the production D.VIII, the V29 was evaluated at the Third Fighter Competition with both the over-compressed BMW IIIa and Mercedes D.IIIau engine for excellent high-altitude performance and was one of the winners of the competition, the other being the Rumpler D.I. However, with fresh memories of the D.VIII wing debacle and with the robust, proven D.VII still superior, Idflieg was in no hurry to order the V29 into production and had not done so by the Armistice. Similarly, the troubled Rumpler D.I never reached mass production.
  
Fokker V29 Specifications
Engine: 185 hp BMW IIIa
Wing: Span 9.68 m
Area 14.3 m2
General: Length 7.02 m
Height 2.93 m
Empty Weight 632 kg
Loaded Weight 861 kg
Maximum Speed: 200 km/h
Climb: 3000m 7.5 min
4000m 10.5 min
5000m 14.7 min
6000m 19.7 min



Fokker V30

  The V30 was a cantilever parasol monoplane (w/n 2737) with a plywood wing powered by Benz Bz.IIIbm geared V-8 motor of 195-200 hp.
  The V30 was sent to Adlershof on July 25, 1918 for evaluation and went there again in October for strength testing. According to the Fokker factory, the V30 was also tested with two different sized wings of 13.3. and 14.3 square meters wing area.
  No photo of the aircraft has been found. Its description sounds much like the V27 only powered by the geared version of the experimental Benz V-8

Fokker V30 Specifications
Engine: 195-200 hp Benz Bz.IIIbm V-8
Wing: Span 9.68 m
Area 13.3 m2
General: Length 6.535 m
Height 3.075 m
Empty Weight 652 kg
Loaded Weight 882 kg
Maximum Speed: about 200 km/h
Duration: 1.5 hr


  
Fokker V31

  A Fokker document “New Constructions and Test Machines” written during the war refers to the V31 as a two-seat parasol monoplane with wing area of 16.5 square meters and 185 hp BMW IIIa engine. No more data has been found.
  The V31 sounds like it may have been an enlarged, two-seat derivative of the V29.



Fokker V32

  No documented information is known.



Fokker V37
  
  Derived from the earlier Fokker V27, and like it powered by a 195 hp Benz Bz.IIIb liquid-cooled V-8 engine, the Fokker V37 was an armored fighter designed for low-level fighting and ground attack.
  Clearly the radiator had to be protected from ground fire to make an effective armored airplane, and the V37’s solution was clever. The radiator was mounted behind the propeller and protected by a disk of armor. The propeller was given a large spinner for streamlining, and air was forced through the radiator by six fan blades mounted in the plane of the propeller. The spinner was made of aluminum sheet and an armor plate disk. Fokker received Reichs patent No. 335745 on 2 October 1918 for an armored propeller spinner with ventilator-like slots.
  The entire forward fuselage, including the engine and cockpit, was protected by steel armor plate 2.5mm thick. The armor behind the pilot even extended up behind his head and was faired into a headrest.
  Had the V37 design progressed, it would certainly have been fitted with the standard fighter armament of two synchronized machine guns. However, the V37 arrived too late to be evaluated, let alone produced in quantity, so its performance and flying qualities are not known. Even its dimensions are unknown.

Fokker V37 Specifications
Engine: 195 hp Benz Bz.IIIb V-8
Wing: Area 17.0 m2


O.Thetford, P.Gray German Aircraft of the First World War (Putnam)


Fokker V 27
   To all intents and purposes this machine was a V 26 modified to accept the vee-eight 195 h.p. Benz IIIb engine. It participated in the second D types Competition, when, at a loaded weight of 839.6 kg. (1,847 lb.), it climbed 1,000 m. (3,280 ft.) in 3 min., 6,000 m. (19,680 ft.) in 45 min; a far from spectacular performance. It was later modified into the V 37


Fokker V 29
   This aircraft was a larger version of the V 27, powered first with the 160 h.p. Mercedes D III and later with the 185 h.p. B.M.W. IIIa engine. It was a parasol version of the D VII and took part in the third D types Competition.


Fokker V 37
   The V 37 was an experiment in enclosing the pilot and engine with sheet-steel armour plate with a view to using the aircraft for trench and ground-attack duties. The illustration shows the angularity of the armour plate and the gigantic spinner, which did little to improve the ungainly appearance of the aircraft. It was powered by a 195 h.p. Benz IIIb.

J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V29 was created alongside other monoplane designs by Fokker to investigate performance advantages of inline engines vs. rotary engines on these similar designs. The V29 won the Third Fighter Competition together with the Rumpler D.I. (Profile by Bob Pearson)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V27 parasol monoplane configuration solved the problem of the pilot's limited field of view suffered by the previous Fokker monoplane prototypes at the expense of greater drag from the struts supporting its wing. However, despite good performance its 195-200 hp Benz Bz.IIIbo experimental V-8 was not ready for production.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
A closeup view of the first V27 photo allows a good look at the large radiator required for the V-type engine. The varnish that coated the plywood wing was quite glossy, and the reflection of the unpainted metal forward upper fuselage covering is seen well.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V27 parasol monoplane configuration solved the problem of the pilot's limited field of view suffered by the previous Fokker monoplane prototypes at the expense of greater drag from the struts supporting its wing. However, despite good performance its 195-200 hp Benz Bz.IIIbo experimental V-8 was not ready for production.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Closeup of the 195-200 hp Benz Bz.IIIbo experimental V-8 engine installation of the Fokker V27 parasol fighter.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V37 armored fighter prototype combined the configuration of the earlier Fokker E.V/D.VIII with a distinctive propeller spinner and a 195 hp Benz Bz.IIIb V-8 water-cooled engine. The entire forward fuselage of the Fokker V37 was armored with 2.5mm steel to protect the pilot, engine, and radiator from rifle-caliber ground fire.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V37 armored fighter prototype combined the configuration of the earlier Fokker V27 with a distinctive propeller spinner and the 195 hp Benz Bz.IIIb V-8 water-cooled engine. The entire forward fuselage of the Fokker V37 was armored with 2.5mm steel to protect the pilot, engine, and radiator from rifle-caliber ground fire. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The entire forward fuselage of the Fokker V37 was armored with 2.5mm steel to protect the pilot, engine, and radiator from rifle-caliber ground fire. The extent of the armor along the cockpit is clearly visible. The fan blades that forced cooling air through the radiator. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Rear quarter view of the Fokker V37 shows its headrest fairing the armored plate behind the pilot. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Forward and rear views of the Fokker V37 armored fighter prototype emphasized how streamlined it was despite the armored plate forward fuselage. (Peter M. Grosz Collection/STDB)
J.Herris - Weird Wings of WWI /Centennial Perspective/ (70)
This view of the Fokker V37 armored fighter prototype without wing or fabric covering clearly shows its armored front fuselage and propeller disk and its welded steel tube fuselage construction. The cooling fan blades in the plane of the propeller are visible. The back of the pilot's head was even protected by a tab of armor extending up from the back armor. The cockpit was very close to the engine to minimize the amount of armor that was needed to protect them.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V37 armored fighter prototype uncovered fuselage showing its armor plate and steel-tube rear fuselage. The engine installation and radiator fan blades are visible. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Rear quarter view of the Fokker V37 showing its armored engine and cockpit coupled with the steel-tube fuselage and tail structure common to Fokker aircraft. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The uncovered Fokker V40 airframe in the foreground. The V37 prototype airframe is in the background and provides a good size comparison. (Peter M. Grosz Collection/STDB)
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V29 shown here was one of the two winners of the Third Fighter Competition. Essentially, it was a parasol monoplane derivative of the Fokker D.VII. Although similar in configuration to the smaller, rotary-powered D.VIII, it had the more powerful 185 hp BMW IIIa engine for better high altitude performance. Similarly, the more powerful D.VII biplane had eclipsed the smaller, rotary-powered D.VI of similar configuration.
J.Herris - Weird Wings of WWI /Centennial Perspective/ (70)
German fighter design shifted to monoplanes as 1918 progressed due to their lower drag. The Fokker V29 won the Third Fighter Competition in October/November 1918, but with the D.VII biplane still very successful in combat and the end of the war in sight, there was no need to order it into production. Powered by a BMW, it was clearly a monoplane development of the D.VII biplane.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V29 was one of the two winners of the Third Fighter Competition. It was evaluated with both the more Mercedes D.IIIau and the 185 hp BMW IIIa engine at the competition for better high altitude performance. The Rumpler D.I was the other winner of the competition, but Rumpler could never bring this troubled design to a configuration ready for mass production.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Seen in the background of a Fokker V34 photo is this parasol monoplane. It may be the Fokker V31.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
The Fokker V34 in its initial configuration without national insignia. Note the vertical tail surface design.The aircraft in the right background may be the Fokker V31.
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V 27
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V 37
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V 29
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V29
J.Herris, J.Leckscheid - Fokker Aircraft of WWI. Vol.5: 1918 Designs Part 1: Prototypes & D.VI /Centennial Perspective/ (55)
Fokker V29