Biplane

The biplane, with its two parallel wings separated by struts, is more easily braced and proportionately stronger. The lift is also greater, due to the additional wing surface. The vacuum made over the lower wing is interfered with by the upper plane, and thus neutralizes somewhat the lifting and flying efficiency of the upper wing. Since a plane must reverse all its stresses when looping, the double supports of the biplane make it less susceptible to doubling up and falling. These are some of the reasons for the popularity of the biplane.

The two parallel airfoils can be "staggered" — with the above surface forward, rather than directly above the lower plane. In this configuration, the upper surface "is removed from the area of action of the lower aerofoil and engages undisturbed air."

Enclosing categories	Airplane
Subcategories
Keywords	Airfoil
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This wiki has 79 patents in category "Biplane". Other techtypes related to Biplane: AU 90.3

Patents in category Biplane

• Patent HU-1916-72425 (English title: Combat aircraft)
• Patent CH-1910-53173 (English title: Airplane, Inventors: Armand Dufaux • Henri Dufaux)
• Patent HU-1914-67909 (English title: Two-sedentated flying machine with step-up stretches, quite likely biplane)
• Patent HU-1916-86090 (English title: Process for the production of bodies from non-metallic materials (likely pertinent to the biplane))
• Patent HU-1909-53765 (English title: Airplane, elaborate, clearly heavier-than-air, multi-winged, Inventors: John Washington Wilson)
• Patent HU-1914-68611 (English title: Innovation on biplanes, Inventors: Franz Schneider)
• Patent DE-1914-330779 (English title: Biplane, or conceivably triplane . . ., Inventors: Rumpler-Werke G.m.b.H. in Berlin-Johannisthal)
• Patent HU-1912-61926 (English title: Propellers for flying machines and airships, Inventors: Pierre Levasseur)
• Patent US-1885-320042 (English title: Apparatus for effecting aerial navigation, Inventors: Frederick William Brearey)
• Patent GB-1897-15221 (English title: Means and appliances for effecting Aerial Navigation, Inventors: Octave Chanute • Augustus Moore Herring)
• Patent GB-1904-6732 (Inventors: Orville Wright • Wilbur Wright)
• Patent FR-1907-373818 (English title: Airplane, overall design inclusive of all elements of lift and stability, Inventors: Robert Esnault-Pelterie)
• Patent FR-1908-384124 (English title: Aeronautic machines, Inventors: Wilbur Wright • Orville Wright)
• Patent FR-1908-387175 (English title: Mixed airplane, Inventors: Louis Bréguet)
• Patent HU-1906-42383 (English title: Water and air vehicle, actually a quite elaborate multi-tier winged Hydroplane or Seaplane, Inventors: Enrico Forlanini)
• Patent FR-1909-402649 (English title: Elaborately well-conceived biplane, twin-propped as well, and aerodynamically designed on the principle of three parabolic arcs, Inventors: Jules Raclot • Camille Enderlin)
• Patent FR-1909-402764 (English title: Biplane "Cas B" - biplane self-balancing on three wheels)
• Patent FR-1909-402883 (English title: Aéroplane biplan, Inventors: Édouard Bueno • Louis Demaurex)
• Patent FR-1909-405099 (English title: Pallet thruster control system for aircraft and otherwise, Inventors: Pierre Levasseur)
• Patent US-1910-957744 (English title: Flying-machine, Inventors: William Whitney Christmas)
• Patent GB-1910-11779 (English title: Aeroplanes, Inventors: Herbert Malcolm McNeill)
• Patent US-1910-971235 (English title: Flying machine, Inventors: Maurice Ackerman)
• Patent FR-1910-418838 (English title: Airplane with multiple planes, Inventors: Gaspar Brunet y Viadera)
• Patent FR-1910-417757 (English title: Biplane aeroplane, Inventors: Lazare I. Finchelstein)
• Patent HU-1909-50774 (English title: "Dragon-system aircraft", Biplane with an emphasis on rudder specifics in the interests of steering and stability, Inventors: Eduard Penkala)
• Patent FR-1910-415407 (English title: Biplane with an emphasis on rudder specifics in the interests of steering and stability, Inventors: Eduard Penkala)
• Patent FR-1910-402883.12087 (English title: Biplane, Inventors: Édouard Bueno • Louis Demaurex)
• Patent FR-1909-410385 (English title: Improvements to airplanes, Inventors: Roger Sommer)
• Patent GB-1909-24902 (English title: Improvements to mechanical flying machines, Inventors: Robert Brocklehurst)
• Patent GB-1909-25116 (English title: Improvements in Heavier-than-air Aeronautical Machines, Inventors: Erhard Cecil Kny)
• Patent GB-1911-3340 (English title: Improvements in aeroplanes, Inventors: Renato Giampietro)
• Patent FR-1910-422718 (English title: Improvements to heavier-than-air flying machines, Inventors: Erhard Cecil Kny)
• Patent HU-1910-50802 (English title: Biplane airplane, Inventors: Jusztin Németh)
• Patent FR-1911-389074.14034 (English title: Airplane - addition with an emphasis on biplane lift and design, Inventors: Alexandre-Louis Gamare)
• Patent US-1911-984311 (English title: Aerial machine, Inventors: Robert W. Stewart)
• Patent US-1911-991846 (English title: Flying machine, Inventors: Otto Haselau)
• Patent GB-1911-17776 (English title: Improvements in aeroplanes, Inventors: Armand Alvarez Penteado)
• Patent US-1911-988113 (English title: Aeroplane, Inventors: Charles Kramer)
• Patent US-1911-992410 (English title: Aerodrome, Inventors: Edward J. Elsas)
• Patent FR-1911-424505 (English title: Wing support system allowing the same fuselage to be applied to either a monoplane or a biplane, Inventors: Robert Esnault-Pelterie)
• Patent FR-1911-420981 (English title: System of construction of both monoplane and biplane chassis, etc., Inventors: Robert Esnault-Pelterie)
• Patent FR-1911-424754.14211 (English title: Aeroplane, Inventors: Pierre-Louis Pujo)
• Patent US-1911-1012836 (English title: Aerial machine, Inventors: Johan Richard Froberg)
• Patent GB-1911-12908 (English title: Improvements in Supporting Surfaces or Wings for Flying Machines, Inventors: Henri-Marie Coandă)
• Patent US-1912-1016363 (English title: Means for maintaining equilibrium of airships and the like, Inventors: John L. Roche)
• Patent US-1912-1013840 (English title: Flying-Machine, Inventors: William G. Hamilton)
• Patent FR-1912-444010 (English title: monoplane that transforms into biplane during descent, Inventors: George Boginoff)
• Patent GB-1913-10605 (English title: Automatic airplane stability achieved by way of wind resistance on a proper surface ultimately effecting the operation of a rudder of stability, Inventors: Otto Albin Budig)
• Patent HU-1911-61224 (English title: "Kite flying", biplane, Inventors: William Francis Wiles • Thomas Macleod • Frederick William Wiles)
• Patent BE-1913-259104 (English title: Improvements to airplanes, Inventors: Jean-Baptiste-Alexis Henrion • René-Alcide-Onesime Henrion)
• Patent HU-1912-60868 (English title: Support for flying machines)
• Patent HU-1911-60295 (English title: A dragon-type airplane with two hammer surfaces arranged obliquely on top of each other, Inventors: Karl Bomhard)
• Patent US-1913-1065799 (English title: Aeroplane, Inventors: Ambroise Goupy)
• Patent ES-1912-53186 (English title: A flying device with simple support planes, Inventors: Hanns Pippart • Heinrich Noll)
• Patent DE-1912-271830 (English title: Biplane with twistable airfoil, Inventors: Charles de Coster)
• Patent FR-1915-475769 (English title: Improvements to airplanes, Inventors: Jean-Baptiste-Alexis Henrion • René-Alcide-Onesime Henrion)
• Patent DE-1915-326209 (English title: Bracing for the sub-ceilings of biplanes and planes with more more than two pairs of wings)
• Patent HU-1914-68282 (English title: Connecting joints, especially for biplane flyers, for tensioning beams of support)
• Patent FR-1915-476681 (English title: Airplane of multiple levels(or wings) in which each level(or set of wings) works independently, Inventors: Alexandre Bezobrazoff)
• Patent FR-1914-450608.19881 (English title: Automatic stabilizer apparatus for airplanes, Inventors: Otto Albin Budig)
• Patent DE-1916-324904 (English title: Biplane, or aircraft with two, or more, pairs of wings)
• Patent DE-1916-349065 (English title: Biplane with motors arranged on the side of the fuselage)
• Patent DE-1917-321028 (English title: Biplane)
• Patent DE-1917-319965 (English title: Connection between sub-areas and hull)
• Patent DE-1917-321072 (English title: Mounting of the suspension cable on aircraft fuselage)
• Patent DE-1917-332426 (English title: Biplane, or conceivably triplane . . ., Inventors: Rumpler-Werke G.m.b.H. in Berlin-Johannisthal)
• Patent DE-1918-323410 (English title: Aircraft engines with two propellers, Inventors: Rumpler-Werke A.-G. in Berlin-Johannisthal)
• Patent AT-1914-77981 (English title: Joint for wing pressure struts of biplanes)
• Patent GB-1917-121990 (English title: Airplanes, Inventors: Joshua Gaskill Jackson)
• Patent AT-1915-79255 (English title: Biplane, Inventors: Oskar Ursinus)
• Patent GB-1918-128724 (English title: Improvements to aeroplanes, Inventors: Louis Raymond Accornero • Adolphe Gaydon)
• Patent GB-1919-126980 (English title: Cells or Compartments for Aeroplanes, Inventors: Émile-Jean-Jules Salmson)
• Patent AT-1914-79246 (English title: Biplane with staggered wings)
• Patent HU-1917-77515 (English title: Adjusting device for flying machines)
• Patent FR-1917-498821.22290 (English title: Improvements to airplanes)
• Patent FR-1916-502873 (English title: Improvements in airplanes, Inventors: Antoine Cazanave)
• Patent GB-1917-168833 (English title: Improvements in hydro-aeroplanes)
• Patent HU-1915-86545 (English title: Aircraft layout, Inventors: Oskar Ursinus)
• Patent GR-1927-1538 (English title: Procedure and apparatus allowing for rapid removal of aircraft wheels and, Inventors: Pierre Levasseur)