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  1. Urquiola

    Boeing - Design Issues...

    The concrete in the BV-246 wings was 'Sorel' concrete. Salut +
  2. Urquiola

    Boeing - Design Issues...

    Sud Aviation 'Caravelle' is roughly the Argentina project by Kurt Tank IA-36, after a putsch with some hundred civilian victims around 1955, with british money and some priests support, the newcomers cancelled projects. German engineers run away, some to India, just to save their lives. Gesund +
  3. Urquiola

    Scale ME-262

    'Rising Sun', Dawn, in the anciet times was devoted to 'that Greek call 'Apollyon' and Jews 'Abbadon the exterminator'. Beware of the dog! Salut + The 'Butterfly' type of tail unit is reported having structural problems, some Beechcraft Bonanza crashed because of it, they say. Blessings +...
  4. Urquiola

    Scale ME-262

    There is NASA/ NACA experimental research, 'Cranfield repository', free and open access, indicating the 'NACA' air intakes, BD-5 style, are worse than the 'open mouth' type, as in Vought 'Crusader'. Blessings+
  5. Urquiola

    Scale ME-262

    A french homebuilder made an small turbine, installed it on a pod above fuselage in a glider, they were banned from flying, with allegations of 'safety concerns'; of course a turbine adds self-takeoff to a glider, but I failed in making any concept about its dangers, if it fails, the airplane...
  6. Urquiola

    Scale ME-262

    Yeah! Svastika, from Sanskrit: 'sv'= 'well; 'asti'= 'being', and the German suffix -kheit='condition of', has its oldest roots in Siberian Shamanism, was a Solar Symbol, no idea why nsdap choose it. Board is from Jean Riviere: 'Talismans, Amulets, Pantacles', other is a 1989 Calendar. '51'= Sí...
  7. Urquiola

    Scale ME-262

    There's a YouTube Video featuring a former He-162 pilot, indicating machine was agile in flight, but difficult to handle in airstrip, having lost more pilots during takeoff and landing than in combat, also a USSR video with negative comments about flight features. There were plans for a turbine...
  8. Urquiola

    Flying wing as cheap and simple option for basic fun flying.

    Blohm und Voss BV-246, a Gliding Bomb, had wings made of concrete. Patent US2776100 is about making wings in concrete, there are many documents, including FAO books, on Concrete Shipbuilding, also the Karslruhe Tech 'Concrete car that works', with 4 mm thick wall, this opens the way for a new...
  9. Urquiola

    The Dobson Convertiplane - VTOL

    I guess the whole Aviation Weeek archive for back issues is available. About the Dobson Air Car, as published in Mechanix Illustrated, May 1969, Patent US3292721, I'd say its main originality is the niche for pilot and passenger being something like a bathtub, the outer rest of hull being left...
  10. Urquiola

    Flying wing as cheap and simple option for basic fun flying.

    The NACA research on Alexander Lippisch DM-1 had a recent use in the Sagitta, a machine from Airbus, that if the Covid-19 crisis had no put a brake on them, they'll have attempted a monopoly even in aeromodels market. 'La grandeur de la France', des francs, or franken. Anyone having info about...
  11. Urquiola

    Flying wing as cheap and simple option for basic fun flying.

    About structures, I found some interesting patents: F E Best, US2294359; H A Berliner, US2228253; and an Stipa remake: CF Johnson, US1864912. btw: any suggestion for an airfoil fitting the Roy B Scroggs pat US1848578? Basically, it has the same leading edge sweptback in Delta as Handley-Page...
  12. Urquiola

    Corvair gut check

    There is also Rafee Corvair, Corvairsation,... With millions of these wonderful engines built, everything was tested. I once read that when avionizing a Corvair engine, the fact that Continental and other engines of same structure and displacement do not give much more than 65 HP is to be...
  13. Urquiola

    Boeing - Design Issues...

    You may know that Blohm und Voss produced in the 40s some Gliding bombs with wings made of concrete, the BV-246. Patent US2776100 is about a procedure to make wings in concrete.
  14. Urquiola

    Boeing - Design Issues...

    An F-104, with the tail arrangement of X-15 (Flat back of X-15 vertical tail unit is to reduce Base Drag at hypersonic speed), avoiding the Super-Stall danger of 'T' tail unit, looks fine. Who will buy this idea? Blessings +
  15. Urquiola

    Flying wing as cheap and simple option for basic fun flying.

    As discussed, probably no cheaper design could be found than the Flying Wing Glider by Werner Lutz in image. I failed in having more data about inventor, as to have plans. Any help? Blessings +
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