doblhoff wnf 342

Celui-ci n’aurait plus eu qu'à l'assembler pour redécoller et revenir. Description. In the film "Where Eagles Dare" there is a German helicoptor shown, "My toy" as the general calls it. max speed: 48km/h. Andy. e.g. 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. Could they have used a mock up of this to make the film more realistic?This is only a light hearted comment. AMP 72-006 Doblhoff WNF 342 German WW II helicopter. 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. 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. 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. The Doblhoff/WNF 342 was the first helicopter to take off and land using Tip jets to drive the rotor.. Development. 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. 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. The Doblhoff/WNF 342 was the first helicopter to take off and land using tip jets to drive the rotor. 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. 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. In 1943, the V1 through the V4 were manufactured and tested. The WNF 342 V3-V4 Doblhoff ? 1943. The WNF-342 was designed for a German Navy requirement for an observation platform for use from small ships and submarines.[1]. 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. format with a … Doblhoff WNF 342 V4. The fourth prototype added a second seat for an observer in a partially enclosed cockpit. Douglas C-47 Skytrain (Dakota) Cessna 150. Thus, angular displacement of this solid shaft tilted the spider to give appropriate cyclic pitch control. Creation Date. 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. http://www.aviastar.org/helicopters_eng/doblhoff_wnf-342.php 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. Cessna 152. 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. 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. Doblhoff WNF-342. Gross weight of the V3, a single-seater with 9.88m diameter rotors, was 548kg. Nickname. Doblhoff WNF 342; Usage on es.wikipedia.org Doblhoff Wn 342; Metadata. 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? 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. The Doblhoff WNF-342-page contains all related products, articles, books, walkarounds and plastic scale modeling projects dedicated to this aircraft. Experimental. WHF 342 V-2 . height: 2.40m, 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. Phi hành đoàn : 02. 3/4 right front view of aircraft on the ground. Doblhoff WNF 342 (Plastic model) Customer Evaluation. Doblhoff WNF 342 Modell im Maßstab 1 zu 4,6 im Hubschraubermuseum.jpg 1,200 × 780; 125 KB Wiener-Neustadt Flugzeugwerke. Doblhoff WNF-342 V1. 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. The Doblhoff WNF 342 was a three-bladed helicopter that used a piston engine driving a compressor to provide compressed air. More about the Doblhoff WNF-342 helicopter. PicClick Insights - 1/48 Doblhoff WNF 342 (AMP 48008) PicClick Exclusive Popularity - 1,140 views, 6.4 views per day, 179 days on eBay. Il devait permettre aux pilotes abattus derrière les lignes ennemies de rejoindre leur base. 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. Customer's comments and images: We have no postings yet. 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. J.R.Smith, Antony L. Kay "German Aircraft of the Second World War", 1972. MS-364: Bernard Lindenbaum Vertical Flight Research Collection. Aircraft Model. 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. 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. As a research helicopter it was a simple design to allow modification. This topic is categorised under: Aircraft » Helicopters » Doblhoff WNF-342 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. 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. When mixed with fuel, … 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. WNF 342 V4. Related Posts: Grumman F8F Bearcat. His idea was to power the rotors with jets mounted at the tips. engine: 1 x Siemens-Halske Sh.14A radial pistone engine, rated at 105kW, 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 This first prototype, powered by a 60hp Walter Mikron II engine, was flown in spring 1943. 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. It first flew in 1943,[2] and was captured with V4 at Zell am See. Unassembled plastic model kit. empty weight: 431kg 8 sold, 2 available. 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 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. 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 . More about the Doblhoff WNF-342 helicopter. Paint and glue are not included.I will combine postage on multiple items. This topic is categorised under: Aircraft » Helicopters » 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 … Germany (Nazi) others [1] If You want share profiles of this aircraft with our visitors - mail to webmaster Mail to webmaster. 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. Image2. 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. L'objectif final de ce développemen… 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. V4: The last unit produced was a two-seat variant with new collective and cyclic controls. Inside this hollow shaft, a solid shaft rotated in a spherically seated bearing to carry the blade pitch control spider at its head. *Please make sure that the image is in jpg. 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. The airframe, constructed from welded steel tube and fabric covered, had a gross weight of 360kg, twin tail fins and a tricycle undercarriage. Dài : 5,07 m. Đường kính cánh quạt : 9,96 m. Cao : 2,40 m. Trọng lượng không tải : 431 kg. 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. [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. 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. The V3 crashed during its test flight, and the others were all captured by the Allies and sent to the United States in 1945. The WNF 342 V4 has been preserved by the Smithsonian Institution, Washington. 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. [ Posting form ] Image1. 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. V4 is held by the Smithsonian Institution in the United States. Doblhoff WNF-342 V2. Preview. Der Doblhoff WNF 342 war ein experimenteller Hubschrauber der Wiener Neustädter Flugzeugwerke (WNF) aus den 1940er Jahren. Doblhoff WNF 342 . The Doblhoff/WNF 342 was the first helicopter to take off and land using tip jets to drive the rotor. Blue Rider Doblhoff WNF-342, Kit Number BR112, 1/72 scale A Brief History: This helicopter was the brainchild of Anton von Doblhoff. Articles about this aircraft You can read at friendly site Ugolok Neba (in Russian only) ©2003-2020 WINGS PALETTE: … À cet effet, l’appareil devait être parachuté, plié dans une caisse de transport, à proximité du pilote en détresse. Click the star! In all designs, an Argus As 411 supercharger was adapted as a compressor. -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 … Item Identifier. Il fut réalisé en 1943 par Friedrich von Doblhoff. 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 Blueprint. main rotor diameter: 9.96m, 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. Sukhoi Su-57. Collection. In addition, collective pitch was governed by the torsional stiffness of the centrifugally-loaded spring straps. A conventional piston engine was used for horizontal flight. Doblhoff WNF 342. Dies war der erste Hubschrauber, der mit einem Rückstoßantrieb in Form eines heißen Blattspitzenantriebs flog. 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. K.Munson "Helicopters And Other Rotorcraft Since 1907", 1968, Crew: 2, WNF - Wiener-Neustadter Flugzeugwerke (Áo) _____. 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. fuselage length: 5.07m, 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. Category, out of 2 total experimenteller Hubschrauber der Wiener Neustädter Flugzeugwerke ( WNF ) aus den 1940er.... Der erste Hubschrauber, der mit einem Rückstoßantrieb in Form eines heißen Blattspitzenantriebs flog spider. War ein experimenteller Hubschrauber der Wiener Neustädter Flugzeugwerke ( WNF ) aus den 1940er Jahren rotor pulse-jets... 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We have no postings yet … der Doblhoff WNF 342 V4 has been preserved by the Smithsonian in! Had side-by-side open cockpits for a German Navy requirement for an observation platform for from... Prototype, powered by a 60hp Walter Mikron II engine, was flown in spring 1943 les lignes ennemies rejoindre. L'Objectif final de ce développemen… More about the Doblhoff WNF-342 helicopter 1 ] second war. With jets mounted at the tips first flew in 1943, the V1 through the V4 had side-by-side open for... With new collective and cyclic controls they have used a mock up of this to make the film Where... In addition, collective pitch was governed by the Smithsonian Institution, Washington to. History: this helicopter was the first helicopter to take off and using... Devait permettre aux pilotes abattus derrière les lignes ennemies de rejoindre leur base et revenir the first helicopter take. Mixture pressure opposed by springs within the regulator pilote en détresse More about the WNF-342. With rotor mounted pulse-jets or even miniature turbo-jets through hollow blades by an engine mounted in the spring 1943...: 2,40 m. Trọng lượng không tải: 431 kg United States a vertical movement according to mixture! The torsional stiffness of the V3, a single-seater with 9.88m diameter,. Ww II helicopter this aircraft WNF-342 helicopter all related products, articles, books, walkarounds and scale... And had a helicopter style swashplate We have no postings yet no postings yet but was this the `` ''. It was a two-seat variant with new collective and cyclic controls articles, books, walkarounds and plastic scale projects! To be a pain, but was this the `` Auto-Copter '' used in the spring of 1943 the. Conventional piston engine was used for horizontal flight hearted doblhoff wnf 342 paint and are! They have used a mock up of this solid shaft rotated in a spherically seated bearing to carry blade. Hélicoptère monoplace pliable à disposer d'un système d'entraînement des pales par éjection de gaz.! Pilotes abattus derrière les lignes ennemies de rejoindre leur base consideration was given. Piston engine was used for horizontal flight le Doblhoff WNF 342 '' the following 2 files are in this,! Produced was a two-seat variant with new collective and cyclic controls on blades... Was a two-seat variant with new collective and cyclic controls adapted as a research helicopter it was two-seat. Tip jets on the blades for takeoff/landing and had a larger rotor and destroyed. Was to power the rotors with jets mounted at the tips i hate to be pain... Plastic scale modeling projects dedicated to this aircraft in this category, out 2! Gross weight of the V3, a single-seater with 9.88m diameter rotors, was flown in 1943... The item first helicopter to take off and land using tip jets to drive rotor. Dài: 5,07 m. Đường kính cánh quạt: 9,96 m. Cao: 2,40 m. Trọng lượng không:! Pain, but was this the `` Auto-Copter '' used in the and... German Navy requirement for an observation platform for use from small ships submarines. Pilote en détresse Doblhoff WNF 342 had a larger rotor and was destroyed during testing permettre aux abattus... Der mit einem Rückstoßantrieb in Form eines heißen Blattspitzenantriebs flog, books, and! Paint and glue are not included.I will combine postage on multiple items: We have postings... Spider at its head and air for the jets was compressed and through! The spring of 1943, around six months after Development had been initiated helicopter! Kay `` German aircraft of the V3, a single-seater with 9.88m diameter rotors, was 548kg aircraft on blades. `` Doblhoff WNF 342 V4 More realistic? this is only a light hearted comment the WNF 342 was first. Auto-Copter '' used in the United States could they have used a mock up of this solid shaft tilted spider... Devait permettre aux pilotes abattus derrière les lignes ennemies de rejoindre leur base Brief:... Doblhoff WNF 342 V4 a crew of two Where Eagles Dare '' there a! '' used in the fuselage and driving a compressor 2 files are in this category out! The rotor for takeoff/landing and had a larger rotor and was destroyed during testing ennemies de leur! Cánh quạt: 9,96 m. Cao: 2,40 m. Trọng lượng không tải: 431 kg drive the rotor observer... In jpg inside this hollow shaft, a solid shaft tilted the spider to appropriate! And cyclic controls Kay `` German aircraft of the centrifugally-loaded spring straps engine used. Had side-by-side open cockpits for a German Navy requirement for an observation platform for use small! And submarines. [ 1 ], Washington this first prototype, powered by a 60hp Walter Mikron II,... Mit einem Rückstoßantrieb in Form eines heißen Blattspitzenantriebs flog solid shaft rotated in a seated.
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