Nov 6, 2020

It was scheduled to fly at Edwards AFB in 1947. The Stipa-Caproni, also called the Caproni Stipa, was an experimental Italian aircraft designed in 1932 by Luigi Stipa (1900–1992) and built by Caproni. * Ribbons not necessarily indicative of actual historical campaign ribbons. This unorthodox design consisted of a flat, somewhat disc shaped body (hence its … The military version of this aircraft, the XF5U-1 - a fighter aircraft with an almost circular wing, was constructed later but never flown. The contract was canceled on 17 March 1947 because of still unsolved technical problems and the lack of Navy R&D money. Data and concept documentation was given to the Navy in 1939, with wind tunnel tests on full-scale models being completed in 1940-1941. Essentially, the invention consisted of a stream-line body, of which fore-and-aft sections are airfoil profiles and transverse sections are approximately ellipses, housing the load and accessories and mounting the control surfaces and en- 15 gines; two engines of light weight per horsepower; and controllable pitch propellers mounted at the wing tips and rotating so that the blade tips move downwardly when farthest from the plane of symmetry of the machine. "true" : "false") + "; expires=" + d.toUTCString() + "; path=/"; Mock-ups of the XF5U-1 were done in the summer of 1943, but due to Vought's preoccupation with the Corsair and Kingfisher, the program proceeded slowly during the war. 30.07.2018 - Просмотрите доску «Flying Pancake» пользователя Dbrnjh в Pinterest. The V-173 has a circular wing 23.3 feet in diameter and a symmetrical NACA airfoil section. For many years the NACA had the best aeronautical research facilities in the world, and in many ways these facilities determined what the NACA would choose to do and be required to do. @media only screen and (min-device-width : 320px) and (max-device-width : 480px) { The V-173 first flew on November 23, 1942, as part of a Navy program to test the lifting capability of short, stubby wings, with Vought Chief Test Pilot Boone Guyton at the controls. Aside from the sci-fi looks, these aircraft were at the leading edge of high-performance aviation development for their time, but financial troubles caused them to fail to complete their goals of supersonic ramjet flight, and the program was canceled. One of the features of both the V-173 and XF5U was its unorthodox “all wing” design with flat, disk-shaped bodies. The Flying Pancake took flight in 1942, but was abandoned after WWII ended due to the emerging presence of high-performance fighter jets. script.setAttribute("onerror", "setNptTechAdblockerCookie(true);"); V-173 - Base Prototype Series Designation; single example completed. A tall, fixed main undercarriage combined with a small tailwheel gave the aircraft a 22° "nose-high" angle. The developmental V-173 made its last flight 31 March 1947, and the Navy decided to scrap the project. var script = document.createElement("script"); Unique lists featuring pop culture, entertainment and crazy facts. Even without these contributions, the X-3 is awesome simply for its radical design. He filed for a design patent on April 30, 1935 and was granted patent #2,108,093 on February 14, 1938. The engines are connected to 30 the propellers by means of conventional reduction gearing and clutches whereby, if one engine stops it may be disconnected from its propeller and the two propellers will be driven by the other engine at sufficient speed to enable the pilot to select a landing place and bring the machine down safely. The entire surface of the illustrated embodiment of the present invention was stream-lined in all dimensions. Bartini-Beriev VVA-14. The V-173 is now part of the Smithsonian collection at the Paul E. Garber Preservation, Restoration, and Storage Facility in Silver Hill, Maryland. Another feature of novelty which increasesd the over-all efficiency above that of other aircraft of the same span loading at the same speed is the location of the propellers at the wing tips and their rotation in such directions that most of the energy which would otherwise be lost in twist of the slip-stream is returned to the machine in the form of diminished induced drag. The empennage consisted of two vertical fins with rudders, two conventional horizontal stabilizers, and two large elevator/trim surfaces on either side of centerline on the trailing edge of the wing planform. The substantially elliptical cross-sectional shape provided an effective dihedral angle on the lower surface, and the fore-and-aft contour is such as to secure a smooth, substantially undisturbed flow of air over the craft. In many ways, this could lead to realizing the concept of Vertical Take-Off and Landing (VTOL), harnessing the vertical hover-power of a helicopter with the on-call forward movement of a conventional fixed-wing aircraft. 15 Custom Military Vehicles That Look Straight Out Of A Superhero Movie, after testing revealed their deficiencies, 10 Hilariously Weird Secret Military Projects That Are Now De-Classified, 15 Weirdest Cold War Jets Most People Forget About, Here Are The 15 Fastest Jets Ever Used By Military Forces, 10 Awesome Classic Cars Even We Can Afford, Here's What You Need To Know About The Triumph Triple Motorcycles, 5 Sports Cars From The 90s That Are Becoming More Expensive (5 That Have Already Skyrocketed Out Of Reach), People Still Believe These 10 Ridiculous Car Myths, 10 Cheapest Japanese Sports Cars To Maintain, 5 Classic German Cars Every Gearhead Should Own (5 Classic British Sports Cars We Can No Longer Afford), The 10 Chevy Camaros No Collector Wants To Own, These Are The 10 Weirdest Cars We've Ever Seen In Movies, These Are The Quickest Buicks On The Used Car Market, 10 Things We Didn't Know About The Chevy Camaro, 10 Stunning Modern Classics You’ll Soon Be Able To Import Into America, These Were The World's Fastest Cars...In The '80s, These 10 Trucks Were Tuned To Produce Crazy Horsepower, 10 Legendary Car Nameplates That Fell From Greatness, 10 Modifications That Will Turn Any Sportbike Into A Track Weapon, 10 Fun Cars That Are Cheaper Than People Think, 5 Great Sports Cars With Hideous Mods (5 Modified To Perfection). Taking its first flight in 1973, the X-24B furthered the research into lifting bodies and high altitude glide performance that would pave the way for the Space Shuttle's design. Only two of these aircraft were built by Chance Vought Aircraft. A huge 16-foot diameter three-bladed prop was mounted at the tip of each airfoil blanketing the entire aircraft in their slipstreams. Posted by. Nicknamed the "Flying Pancake" for fairly obvious reasons, the Vought V-173 was a thoroughly ridiculous-looking experiment conducted for the US Navy. The Vought V-173 "Flying Pancake" was an American experimental test aircraft built as part of the Vought XF5U "Flying Flapjack" United States Navy fighter aircraft program during World War II. 07-07-2011 02:32:00 ZULU. Like the other lifting bodies, the X-24B uses the aerodynamics of its body to "fly," although its more akin to falling gracefully. During its 131-hour test program, with massive 16.5-foot-diameter wooden propellers driven by two 80-horsepower Continental A-80 air-cooled engines, it was found that it had unusual flight characteristics and control responses, but could be handled effectively. A development of the X-24A that was a part of the previously mentioned lifting body X-plane series, the X-24B built upon lessons learned from the X-24A, and took the alien space-ship looks to a new level. User account menu. #ga-ad {display: none;} In January 1942 BuAer requested the proposal for two prototype airplanes of an experimental version of the V-173, known as the VS-135. With the fairly high loading of the propellers employed the slip-stream velocity will always be high, 60 to 100 miles per hour, so that the control surfaces will be very effective in hovering and low-speed flight. [6] Although a prototype was constructed, it was never flown, as Navy priorities had changed in the meantime. It could thus launch and land on short aircraft carrier decks, which meant possibly smaller aircraft carriers, and even fly off of jury-rigged flight decks on Merchant ships or cow pastures or beaches. One of the more unusual was the XF5U-1, an early vertical takeoff and landing (VTOL) design built in 1948. 1 Share this post. Throughout its history, the "Vought" name was synonymous with aviation firsts, including many one-of-a-kind and experimental aircraft. Going beyond the lunacy of such a massive sea-plane, the VVA-14 was designed to hunt down American submarines that may have been lurking in Soviet waters. Unfortunately, a mid-air collision destroyed one of the two XB-70s that were made, and the program was canceled in 1969. The most efficient streamlining requires that the depth of the body in smaller machines, be such that the pilot and passengers, if any, occupy a prone position. The Northrop M2-F3 though, looks as if a fighter jet of the time was cross-bred with a space ship from some far flung planet, in the coolest way possible. Designed to be powered by a ramjet - a type of engine that uses high-speed air passing through the aircraft's intake instead of a jet turbine - the Leduc 0.2 series were experiments into the emerging field of supersonic flight during the '50s. "The Ups and Downs of The Flying Pancake. Having one of the least conventional, and most alien designs of all time, the Proteus had a focus on long endurance high altitude operations, like satellite communications and reconnaissance. It was very revolutionary and high performance, with a 425 mph top speed and 20 mph landing speed. The experimental Vought XF5U-1 "Flying Pancake" is an interesting shape and intriguing aircraft for many. "Vought V-173 and XFU-1 'Flapjack' (1942)". [1] Two piston engines buried in the body drove propellers located on the leading edge at the wingtips.[2]. The Vought V-173 "Flying Pancake" designed by Charles H. Zimmerman was an American experimental test aircraft built as part of the Vought XF5U "Flying Flapjack" World War II United States Navy fighter aircraft program. The V-173, flown many times, was capable of very short takeoffs and landings, and it was flown by Charles Lindbergh. Despite this, the X-3's wing design paved the way for the legendary F-104 Starfighter and brought useful insights into the dangerous "roll coupling" (unintended movement of other control axes when rolling the plane) effect that plagued early supersonic fighter jets. document.cookie = "__adblocker=; expires=Thu, 01 Jan 1970 00:00:00 GMT; path=/"; The pilot locked the aircraft's brakes on landing, causing the aircraft to flip over onto its back. Carrying out missions to test flight dynamics of proposed spacecraft, and prove the concept of wing-less lift, every X-plane in the 1960s lifting body series looks thoroughly alien. The V-173 blueprints were shown to the Navy in 1939. The XF5U-1 prototype was scrapped, though the V-173 prototype was saved and was given to the Smithsonian. }, Page last modified: The arrival of the jet age saw the cancellation of the XF5U-1 contract by the Navy in March 1947, despite the fact that the aircraft was due to take its first test flight later that year. RELATED: 15 Custom Military Vehicles That Look Straight Out Of A Superhero Movie, Having created some wild aircraft in the past under the leadership of aviation design legend Burt Rutan, Scaled Composites' Proteus served as a multi-mission experiment for NASA. Nearly 200 test flights later, it proved the viability of Zimmerman’s design and earned him the Wright Brothers Medal. The invention was claimed to approximate the ultimate ideal for high speed aircraft, which is a stream-line body enclosing the load and the power plants with other accessories, and flattened so that its cross section is elliptical rather than round, efficiently to provide lift at high speeds. Helicopters & rotorcraft, airships, balloons, parachutes & skydiving … Press J to jump to the feed. All rights Reserved. Although the XF5U-1 were never flown, the smaller V-173 prototype did fly.

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