doblhoff wnf 342

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The spider was given a vertical movement according to the mixture pressure opposed by springs within the regulator. 3/4 right front view of aircraft on the ground. Original image dimensions: 1455 x 1063px You are not logged in: the resolution of the images is restricted to a maximum of 500px wide and 500px high. This topic is categorised under: Aircraft » Helicopters » Doblhoff WNF-342 Under the designation WNF 342, the world's first jet-driven helicopters were built by the Wiener Neustadter Flugzeugwerke (WNF) in the suburbs of Vienna, four machines being built representing progressive experimental steps in a research programme instituted in October 1942. The conventional piston engine drove both a small propeller (to provide airflow across a rudder) and an air compressor to provide air (subsequently mixed with fuel) through the rotor head and hollow rotor blades to a combustion chamber at the rotor tips. Doblhoff WNF 342 German Helicopter (PE parts, mask) 1/48 AMP # 48008CHECK MY STORE FOR MORE ITEMSOrder TrackingFast ShippingDESCRIPTION Doblhoff WNF 342 German Helicopter (PE parts, mask), 1/48 scale model kit from AMP (MikroMir) from Ukraine. Germany (Nazi) others [1] If You want share profiles of this aircraft with our visitors - mail to webmaster Mail to webmaster. Nickname. WHF 342 V-2 . Related Posts: Grumman F8F Bearcat. I hate to be a pain, but was this the "Auto-Copter" used in the Annie movie? Thus, by gradual development, the rotor jets (which had a high fuel consumption) were only used for take-off, hovering and landing, and the rotor blades turned by autorotation for forward flight in the manner of an autogyro. J.R.Smith, Antony L. Kay "German Aircraft of the Second World War", 1972. K.Munson "Helicopters And Other Rotorcraft Since 1907", 1968, Crew: 2, Doblhoff WNF 342 Blueprint. Doblhoff WNF 342 V4. This programme was directed by Friedrich von Doblhoff, who had decided to develop a jet-driven helicopter in preference to a mechanically-driven one because of the attraction of simplicity, lack of rotor torque and transmission gear. WNF 342 V4. This aircraft is a bit unstable, over 50 kmh, and throttle<50, it will … À cet effet, l’appareil devait être parachuté, plié dans une caisse de transport, à proximité du pilote en détresse. The Doblhoff WNF 342 is the world's first tip jet helicopter designed for the German Navy; it could be operated from small ships and U-boats. The WNF 342 V3-V4 Doblhoff ? Creation Date. Doblhoff WNF-342 V2 1944: This first prototype, powered by a 60hp Walter Mikron II engine, was flown in spring 1943. Fuel and air for the jets was compressed and pumped through hollow blades by an engine mounted in the fuselage and driving a compressor. AMP 72-006 Doblhoff WNF 342 German WW II helicopter. When the pilot moved the throttle control, a rapid increase (for example) of mixture pressure and jet thrust followed by an increase in collective pitch ensued, while the rotor rpm remained constant. Doblhoff WNF-342 V2. Preview. Paint and glue are not included.I will combine postage on multiple items. format with a … take-off weight: 640kg, 8 sold, 2 available. For the first three machines, although flapping and dragging rotor hinges were provided, no blade pitch-change arrangement was made since this was not required for early tests, vertical control being provided simply by varying the rotor speed. Celui-ci n’aurait plus eu qu'à l'assembler pour redécoller et revenir. Creator. The WNF-342 was designed for a German Navy requirement for an observation platform for use from small ships and submarines. A conventional piston engine was used for horizontal flight. empty weight: 431kg The WNF 342 VI was built and first flown in the spring of 1943 but was superficially damaged the following year during an air raid on Vienna, whereupon the test programme was moved a short distance away to Obergraffendorf. The airframe, constructed from welded steel tube and fabric covered, had a gross weight of 360kg, twin tail fins and a tricycle undercarriage. Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab In 1945, Soviet troops approaching Vienna caused Doblhoff’s team to withdraw hastily to Zell am See where the V2 and V4 machines were captured by United States' forces. Doblhoff WNF 342 - první tryskový vrtulník V roce 1939 předložil svobodný pán Friedrich von Doblhoff, 24letý čerstvý absolvent vídeňské techniky, inženýrům Wiener Neustäter Flugzeugwerke své plány na stavbu vrtulníku poháněného tryskami na koncích rotorových listů. It should be emphasized that the fluid design of the WNF 342 was such that modifications, as dictated by empirical experiment, could be readily catered for. Image2. The WNF-342 was the work of three engineers - Friedrich von Doblhoff, A.Stepan and Theodor Laufer - at the Wiener Neustadter Flugzeugwerke in Vienna. The tip-drive system was retained for take-off, hovering and landing only, a selective clutch enabling the engine (now a 140hp Siemens-Halske Sh.14A radial) to drive a conventional pusher propeller for forward flight while the rotor blades 'free-wheeled' in autorotative pitch. Super high amount of views. main rotor diameter: 9.96m, Aircraft Type. As a research helicopter it was a simple design to allow modification. TRỰC THĂNG THỬ NGHIỆM. L'objectif final de ce développemen… This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. Unassembled plastic model kit. More about the Doblhoff WNF-342 helicopter. The fourth prototype added a second seat for an observer in a partially enclosed cockpit. Description. Doblhoff WNF 342 . In all of the History Channel and other rotorcraft documentaries that I have seen they credit the gyro kit FA-330 (and 336) as the only WWII German autogyro.However, upon re-reading From Autogiro to Gyroplane by Bruce Charnov, in Chapter 10 he mentions the Doblhoff … Le Doblhoff WNF 342 a été le premier hélicoptère monoplace pliable à disposer d'un système d'entraînement des pales par éjection de gaz comprimés . These troubles were eliminated in the last example which behaved well and was very smooth, but although it was hovered for a total of 25 hours, it was not tested in forward flight above 40 to 48km/h before the programme had to be halted. The Doblhoff/WNF 342 was the first helicopter to take off and land using tip jets to drive the rotor. More × Not to be taken too seriously cos the germans had lost air control by 1944 and a helicopter would have lasted about 10 mins in the air. Dies war der erste Hubschrauber, der mit einem Rückstoßantrieb in Form eines heißen Blattspitzenantriebs flog. Image3. max speed: 48km/h. First helicopter in the world to take off and land using blade-tip jets to drive the rotor, the WNF-342 was the work of three engineers - Friedrich von Doblhoff, A.Stepan and Theodor Laufer - at the Wiener Neustadter Flugzeugwerke in Vienna. Andy. Sukhoi Su-57. I agree that the German WNF 342 Doblhoff is the ugliest and most sinister of the two, and have elected to go that route based on John's encouragement. Cessna 152. Blue Rider Doblhoff WNF-342, Kit Number BR112, 1/72 scale A Brief History: This helicopter was the brainchild of Anton von Doblhoff. The operating principle was to use a conventional piston engine driving a compressor to provide a compressed air supply, which, after mixing with fuel, was fed as a combustible mixture up through the rotor hub and out through the three hollow rotor blades to be burnt in tip-mounted combustion chambers, thereby generating thrust. This upper casting rotated in a lower fixed casting, a seal being provided between the two, and fuel mixture flowed into this hollow assembly to be piped out to each blade. *Please make sure that the image is in jpg. Il devait permettre aux pilotes abattus derrière les lignes ennemies de rejoindre leur base. It eventually fell into American hands, Doblhoff later accompanying it back to the United States to assist with further tests before joining McDonnell to work on development of the XV-1. Doblhoff WNF 342 (Plastic model) Customer Evaluation. Passing up through the casting was a hollow fixed shaft which carried a bearing for the upper casting and which was flexibly connected to the helicopter framework. Articles about this aircraft You can read at friendly site Ugolok Neba (in Russian only) ©2003-2020 WINGS PALETTE: … The Doblhoff WNF 342 was the first helicopter to take off and land using tip jets to drive the rotor. Stepan, who had done most of the test flying on the WNF-342, joined Fairey in the United Kingdom after the war, while Laufer went to work for the SNCA du Sud-Ouest in France. The V3 was destroyed early in its test programme by ground resonance vibration, but the V4 had completed 25 hours of testing before, in April 1945, it was hastily taken westwards to prevent its capture by the advancing Soviet forces. Inside this hollow shaft, a solid shaft rotated in a spherically seated bearing to carry the blade pitch control spider at its head. [ Posting form ] Image1. By the time the WNF 342 V4 was built, however, a most ingenious control method had been devised to provide both collective and cyclic pitch control. Before the end of the war, consideration was being given to replacing the compressor system with rotor mounted pulse-jets or even miniature turbo-jets. The WNF 342 V4 has been preserved by the Smithsonian Institution, Washington. height: 2.40m, Media in category "Doblhoff WNF 342" The following 2 files are in this category, out of 2 total. Von Doblhoff’s WNF 342 was originally designed as a single seat aircraft with a tubular steel frame and a fabric covered tail section. For collective pitch control, the spider was connected to the solid shaft by means of a pressure regulator connected to the upper casting (containing the pressurized fuel mixture) by a pipeline. 1944. engine: 1 x Siemens-Halske Sh.14A radial pistone engine, rated at 105kW, Doblhoff WNF 342 1945 Under the designation WNF 342, the world's first jet-driven helicopters were built by the Wiener Neustadter Flugzeugwerke (WNF) in the suburbs of Vienna, four machines being built representing progressive experimental steps in a research programme instituted in October 1942. The aircraft was really more of a convertiplane than an Autogyro, or Helicopter. Starting with the V3 machine, increases were made in rotor diameter, and both the V3 and V4 used the extra power of the 140hp BMW Bramo Sh 14A engine to drive the compressor. ms364_124_01_005. Could they have used a mock up of this to make the film more realistic?This is only a light hearted comment. Gross weight of the V3, a single-seater with 9.88m diameter rotors, was 548kg. The Doblhoff-WNF WN 342V4, seen here, was the fourth and last prototype of this the world's first jet-driven, or hot-cycle helicopter. Shown images are of much lower quality, due to resizing. It first flew in 1943,[2] and was captured with V4 at Zell am See. To clear this propeller the rotor pylon was raised above the cabin and the tail unit was redesigned as a twin-boom assembly, that of the V3 carrying two end-plate oval fins and rudders while that of the V4 had a single fin and rudder mounted on the tailplane centre. More about the Doblhoff WNF-342 helicopter. I have looked through the designs shown here and this is the closest to the film one (which was a Bell 47 prod 1946).Did any of the German models ever make it past the experimental stages? The V3 crashed during its test flight, and the others were all captured by the Allies and sent to the United States in 1945. In addition, collective pitch was governed by the torsional stiffness of the centrifugally-loaded spring straps. The WNF-342 was designed for a German Navy requirement for an observation platform for use from small ships and submarines.[1]. Doblhoff WNF 342. The Doblhoff WNF-342-page contains all related products, articles, books, walkarounds and plastic scale modeling projects dedicated to this aircraft. Customer's comments and images: We have no postings yet. 1943. Within their limited performance, the V1 and V2 machines flew smoothly enough, but serious vibration manifested itself in the V3 machine and eventually destroyed it. It had tip jets on the blades for takeoff/landing and had a helicopter style swashplate. His idea was to power the rotors with jets mounted at the tips. This topic is categorised under: Aircraft » Helicopters » Doblhoff WNF-342 It eventually fell into American hands, Doblhoff later accompanying it back to the United States to assist with further tests before joining McDonnell to work on development of the XV-1. Thus, angular displacement of this solid shaft tilted the spider to give appropriate cyclic pitch control. V3: The second WNF 342 had a larger rotor and was destroyed during testing. In all designs, an Argus As 411 supercharger was adapted as a compressor. The Doblhoff/WNF 342 was the first helicopter to take off and land using Tip jets to drive the rotor.. Development. Aircraft Manufacturer. When mixed with fuel, … Each of the first three machines (V1, V2, and V3) was provided with only a small rear propeller to blow air at the tail surfaces for steering, but the last machine (V4) had a second propeller mounted co-axially to provide thrust for forward flight when clutched to the compressor motor. Here, the 60hp Walter Mikron engine was replaced by a 90hp Walter Mikron engine, and general modifications were made to the extent that the machine was redesignated WNF 342 V2. e.g. -A new product from the micro mill in Ukraine The introduction of a new mold 1/48 Dobrhof WNF 342 prototype helicopter.-The WNF 342 is the world's first tip jet (wing tip jet) helicopter designed for the German navy that requires reconnaissance equipment that … Review *Please make a post that is relevant to the item. Douglas C-47 Skytrain (Dakota) Cessna 150. Doblhoff WNF-342. The airframe, constructed from welded steel tube and fabric covered, had a gross weight of 360kg, twin tail fins and a tricycle undercarriage. Doblhoff WNF 342: Experience with the first two machines showed that the high fuel consumption of the tip-jets would make the WNF-342's operating costs prohibitive, and so a major design change was introduced in the V3 and V4 prototypes. Item Identifier. Doblhoff WNF 342; Usage on es.wikipedia.org Doblhoff Wn 342; Metadata. Phi hành đoàn : 02. The Doblhoff WNF 342 was a three-bladed helicopter that used a piston engine driving a compressor to provide compressed air. Collection. The Doblhoff/WNF 342 was the first helicopter to take off and land using Tip jets to drive the rotor. The Doblhoff/WNF 342 was the first helicopter to take off and land using Tip jets to drive the rotor. fuselage length: 5.07m, Experimental. WNF - Wiener-Neustadter Flugzeugwerke (Áo) _____. Doblhoff WNF 342. Aircraft Model. V4 is held by the Smithsonian Institution in the United States. Wiener-Neustadt Flugzeugwerke. Der Doblhoff WNF 342 war ein experimenteller Hubschrauber der Wiener Neustädter Flugzeugwerke (WNF) aus den 1940er Jahren. PicClick Insights - 1/48 Doblhoff WNF 342 (AMP 48008) PicClick Exclusive Popularity - 1,140 views, 6.4 views per day, 179 days on eBay. In the film "Where Eagles Dare" there is a German helicoptor shown, "My toy" as the general calls it. In 1943, the V1 through the V4 were manufactured and tested. Doblhoff WNF-342 V1. Il fut réalisé en 1943 par Friedrich von Doblhoff. This first prototype, powered by a 60hp Walter Mikron II engine, was flown in spring 1943. Dài : 5,07 m. Đường kính cánh quạt : 9,96 m. Cao : 2,40 m. Trọng lượng không tải : 431 kg. The Doblhoff/WNF 342 was the first helicopter to take off and land using tip jets to drive the rotor. Doblhoff/WNF 342 Role Tip jet research helicopter National origin Austria Manufacturer Wiener Neustadter Flugzeugwerke Designer Frederich von Doblhoff First flight 1943 Number built The V4 had side-by-side open cockpits for a crew of two. The Doblhoff WNF-342-page contains all related products, articles, books, walkarounds and plastic scale modeling projects dedicated to this aircraft. Doblhoff WNF-342 WNF-342. Other articles where Doblhoff WNF 342 is discussed: history of flight: Turbine-powered helicopters: …turbine) helicopter was the German Doblhoff WNF 342, which flew in 1943 using three hollow rotors through which a mixture of fuel and air was compressed to burn through nozzles at the blade tips for vertical takeoffs and landings. Login or register to remove this restriction. [Clarification needed], Data from Illustrated Encyclopedia of Aircraft[2], Articles needing clarification from October 2014, Articles incorporating text from Wikipedia, http://www.hubschraubermuseum.de/archives/manufacturers/doblhoff, https://military.wikia.org/wiki/Doblhoff_WNF_342?oldid=4793255. the first WN 342 made its maiden flight in the spring of 1943, around six months after development had been initiated. Conceived by the Austrian engineer Friedrich von Doblhoff. Doblhoff WNF 342 Modell im Maßstab 1 zu 4,6 im Hubschraubermuseum.jpg 1,200 × 780; 125 KB the germans fielded various helicopters in combat in ww2 and they were very hard to shoot down, but their factories were bombed regularly.see some in action on Youtube and see the Doblhoff fly too!http: / /www.youtube.com /watch?v=6SrUyNG4fYAhttp: / /www.youtube.com /watch?v=GF9R9Zq6P9M. Thus, the basic framework was of all-tubular construction with no refinements, such as fairings, appearing as semi-permanent fittings until the V4 machine, although this machine was by no means intended as the final design. V1/V2: The first helicopter was initially powered by a 60 horsepower (45 kW) engine (V1) and then a 90 horsepower (67 kW) engine (V2)—both by Walter Mikron. Click the star! MS-364: Bernard Lindenbaum Vertical Flight Research Collection. Each rotor blade was connected to the rotor head by means of a flexibly coupled tube flanked by steel-strip leaf-type spring straps connected to an upper aluminium alloy casting. 1-1-1945. http://www.aviastar.org/helicopters_eng/doblhoff_wnf-342.php V4: The last unit produced was a two-seat variant with new collective and cyclic controls. Zell am See there is a German helicoptor shown, `` My toy '' as the general it... By a 60hp Walter Mikron II engine, was 548kg gross weight of the spring! Aircraft on the ground rotated in a partially enclosed cockpit 72-006 Doblhoff WNF 342 the... To drive the rotor.. Development 72-006 Doblhoff WNF 342 a été le premier hélicoptère monoplace pliable à d'un! Open cockpits for a crew of two permettre aux pilotes abattus derrière les lignes ennemies de rejoindre leur.... J.R.Smith, Antony L. Kay `` German aircraft of the second World war '', 1972 quạt: 9,96 Cao... 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