B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
  
TRANSPORTING
 B64
AIRCRAFT; AVIATION; COSMONAUTICS
 B64C
AEROPLANES; HELICOPTERS (air-cushion vehicles B60V)
 B64C

Note(s)

As far as possible, classification is made according to constructional features; classification according to particular kinds of aircraft is normally regarded as being of secondary importance, except in cases where this is considered to be the characteristic feature.  [3]

 B64C
Subclass index
STRUCTURES, FAIRINGS
Features common to different elements 1/00
Fuselages; wings; stabilising surfaces 1/00; 3/00; 5/00
Other structural elements 7/00
PROPELLERS, FLIGHT CONTROL
Propellers 11/00
Adjustable control surfaces or members; control systems 9/00; 13/00
Control by jet reaction 15/00
Stabilisation and controls not otherwise provided for 17/00, 19/00
MODIFYING LIFT BY ACTION ON AIR-FLOW 13/00, 21/00, 23/00
ALIGHTING GEAR 25/00
AIRCRAFT KINDS AND THEIR COMPONENTS NOT OTHERWISE PROVIDED FOR
Supersonic 30/00
Seaplanes 35/00
Aircraft intended to be sustained without power plant; powered hand-glider-type aircraft; microlight aircraft 31/00
Convertible aircraft 37/00
Vertical-take-off or landing aircraft 29/00
Rotorcraft; ornithopters 27/00; 33/00
Others 39/00
 B64C 1/00 - 
B64C 7/00
Aircraft structures or fairings (boundary-layer controls B64C 21/00)
 B64C 1/00
Fuselages; Constructional features common to fuselages, wings, stabilising surfaces, or the like (aerodynamical features common to fuselages, wings, stabilising surfaces, or the like B64C 23/00; flight-deck installations B64D)
 B64C 1/06
·  Frames; Stringers; Longerons
 B64C 1/08
·  ·  Geodetic or other open-frame structures
 B64C 1/10
·  ·  Bulkheads
 B64C 1/12
·  ·  Construction or attachment of skin panels
 B64C 1/14
·  Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens (fairings movable in conjunction with undercarriage elements B64C 25/16; bomb doors B64D 1/06)
 B64C 1/16
·  specially adapted for mounting power plant
 B64C 1/18
·  Floors
 B64C 1/20
·  ·  specially adapted for freight
 B64C 1/22
·  Other structures integral with fuselages to facilitate loading
 B64C 1/24
·  Steps mounted on, and retractable within, fuselages (readily removable B64D 9/00)
 B64C 1/26
·  Attaching the wing or tail units or stabilising surfaces
 B64C 1/28
·  Parts of fuselage relatively movable to improve pilots view
 B64C 1/30
·  Parts of fuselage relatively movable to reduce overall dimensions of aircraft
 B64C 1/32
·  Severable or jettisonable parts of fuselage facilitating emergency escape (ejector seats B64D 25/10)
 B64C 1/34
·  comprising inflatable structural components (connection of valves to inflatable elastic bodies B60C 29/00)
 B64C 1/36
·  adapted to receive aerials or radomes (aerials or radomes per se H01Q)
 B64C 1/38
·  Constructions adapted to reduce effects of aerodynamic or other external heating
 B64C 1/40
·  Sound or heat insulation
 B64C 3/00
Wings (stabilising surfaces B64C 5/00; ornithopter wings B64C 33/02)
 B64C 3/10
·  Shape of wings
 B64C 3/14
·  ·  Aerofoil profile
 B64C 3/16
·  ·  Frontal aspect
 B64C 3/18
·  Spars; Ribs; Stringers (attaching wing unit to fuselage B64C 1/26)
 B64C 3/20
·  Integral or sandwich constructions (layered products or sandwich constructions in general B32B)
 B64C 3/22
·  Geodetic or other open-frame structures
 B64C 3/24
·  Moulded or cast structures
 B64C 3/26
·  Construction, shape, or attachment of separate skins, e.g. panels
 B64C 3/28
·  Leading or trailing edges attached to primary structures, e.g. forming fixed slots
 B64C 3/30
·  comprising inflatable structural components (connection of valves to inflatable elastic bodies B60C 29/00)
 B64C 3/32
·  specially adapted for mounting power plant
 B64C 3/34
·  Integrally-constructed tanks, e.g. for fuel (other aircraft fuel tanks or fuel systems B64D)
 B64C 3/36
·  Structures adapted to reduce effects of aerodynamic or other external heating
 B64C 3/38
·  Adjustment of complete wings or parts thereof
 B64C 3/40
·  ·  Varying angle of sweep
 B64C 3/42
·  ·  Adjusting about chordwise axes
 B64C 3/44
·  ·  Varying camber
 B64C 3/46
·  ·  ·  by inflatable elements (connection of valves to inflatable elastic bodies B60C 29/00)
 B64C 3/48
·  ·  ·  by relatively-movable parts of wing structures
 B64C 3/50
·  ·  ·  by leading or trailing edge flaps (ailerons B64C 9/00)
 B64C 3/52
·  ·  Warping
 B64C 3/54
·  ·  Varying in area (flaps extendable to increase camber B64C 3/44)
 B64C 3/56
·  ·  Folding or collapsing to reduce overall dimensions of aircraft
 B64C 3/58
·  provided with fences or spoilers (adjustable for control purposes B64C 9/00)
 B64C 5/00
Stabilising surfaces (attaching stabilising surfaces to fuselage B64C 1/26)
 B64C 5/02
·  Tailplanes (fins B64C 5/06)
 B64C 5/04
·  Noseplanes
 B64C 5/06
·  Fins (specially for wings B64C 5/08)
 B64C 5/08
·  mounted on, or supported by, wings
 B64C 5/10
·  adjustable
 B64C 5/12
·  ·  for retraction against or within fuselage or nacelle
 B64C 5/14
·  ·  Varying angle of sweep
 B64C 5/16
·  ·  about spanwise axes
 B64C 5/18
·  ·  in area
 B64C 7/00
Structures or fairings not otherwise provided for
 B64C 7/02
·  Nacelles
   
 B64C 9/00
Adjustable control surfaces or members, e.g. rudders (trimming stabilising surfaces B64C 5/10; systems for actuating flying-control surfaces B64C 13/00)
 B64C 9/02
·  Mounting or supporting thereof
 B64C 9/04
·  with compound dependent movements
 B64C 9/06
·  with two or more independent movements
 B64C 9/08
·  bodily displaceable (varying camber of wings B64C 3/44)
 B64C 9/10
·  one surface adjusted by movement of another, e.g. servo tabs (B64C 9/04 takes precedence; adjusting surfaces of different type or function B64C 9/12)
 B64C 9/12
·  surfaces of different type or function being simultaneously adjusted
 B64C 9/14
·  forming slots (boundary-layer control B64C 21/00)
 B64C 9/16
·  ·  at the rear of the wing
 B64C 9/18
·  ·  ·  by single flaps
 B64C 9/20
·  ·  ·  by multiple flaps
 B64C 9/22
·  ·  at the front of the wing
 B64C 9/24
·  ·  ·  by single flap
 B64C 9/26
·  ·  ·  by multiple flaps
 B64C 9/28
·  ·  by flaps at both the front and rear of the wing operating in unison
 B64C 9/30
·  Balancing hinged surfaces, e.g. dynamically
 B64C 9/32
·  Air braking surfaces (braking by parachutes B64D 17/80)
 B64C 9/34
·  collapsing or retracting against or within other surfaces or other members
 B64C 9/36
·  ·  the members being fuselages or nacelles
 B64C 9/38
·  Jet flaps
 B64C 11/00
Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (rotors specially adapted for rotorcraft B64C 27/32)
 B64C 11/02
·  Hub construction
 B64C 11/04
·  ·  Blade mountings
 B64C 11/06
·  ·  ·  for variable-pitch blades
 B64C 11/08
·  ·  ·  for non-adjustable blades
 B64C 11/10
·  ·  ·  ·  rigid
 B64C 11/12
·  ·  ·  ·  flexible
 B64C 11/14
·  ·  Spinners
 B64C 11/16
·  Blades
 B64C 11/18
·  ·  Aerodynamic features
 B64C 11/20
·  ·  Constructional features
 B64C 11/22
·  ·  ·  Solid blades
 B64C 11/24
·  ·  ·  Hollow blades
 B64C 11/26
·  ·  ·  Fabricated blades
 B64C 11/28
·  ·  ·  Collapsible or foldable blades
 B64C 11/30
·  Blade pitch-changing mechanisms
 B64C 11/32
·  ·  mechanical
 B64C 11/34
·  ·  ·  automatic
 B64C 11/36
·  ·  ·  non-automatic
 B64C 11/38
·  ·  fluid, e.g. hydraulic
 B64C 11/40
·  ·  ·  automatic
 B64C 11/42
·  ·  ·  non-automatic
 B64C 11/44
·  ·  electric
 B64C 11/46
·  Arrangements of, or constructional features peculiar to, multiple propellers
 B64C 11/48
·  ·  Units of two or more coaxial propellers
 B64C 11/50
·  ·  Phase synchronisation between multiple propellers
 B64C 13/00
Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
 B64C 13/02
·  Initiating means
 B64C 13/04
·  ·  actuated personally
 B64C 13/06
·  ·  ·  adjustable to suit individual persons
 B64C 13/08
·  ·  ·  Trimming zero positions
 B64C 13/10
·  ·  ·  comprising warning devices
 B64C 13/12
·  ·  ·  Dual control apparatus
 B64C 13/14
·  ·  ·  lockable (locking in position to suit individual persons B64C 13/06)
 B64C 13/16
·  ·  actuated automatically, e.g. responsive to gust detectors
 B64C 13/18
·  ·  ·  using automatic pilot (automatic pilots per se G05D 1/00)
 B64C 13/20
·  ·  ·  using radiated signals
 B64C 13/22
·  ·  ·  readily revertible to personal control
 B64C 13/24
·  Transmitting means
 B64C 13/26
·  ·  without power amplification or where power amplification is irrelevant
 B64C 13/28
·  ·  ·  mechanical
 B64C 13/30
·  ·  ·  ·  using cable, chain, or rod mechanisms
 B64C 13/32
·  ·  ·  ·  using cam mechanisms
 B64C 13/34
·  ·  ·  ·  using toothed gearing
 B64C 13/36
·  ·  ·  fluid
 B64C 13/38
·  ·  with power amplification
 B64C 13/40
·  ·  ·  using fluid pressure
 B64C 13/42
·  ·  ·  ·  having duplication or stand-by provisions
 B64C 13/44
·  ·  ·  ·  overriding of personal controls; with automatic return to inoperative position
 B64C 13/46
·  ·  ·  ·  with artificial feel
 B64C 13/48
·  ·  ·  ·  characterised by the fluid being gaseous
 B64C 13/50
·  ·  ·  using electrical energy
 B64C 15/00
Attitude, flight direction, or altitude control by jet reaction (details of jet-engine plants, e.g. of nozzles or jet pipes, F02K)  [3]
 B64C 15/02
·  the jets being propulsion jets
 B64C 15/12
·  ·  the power plant being tiltable
 B64C 15/14
·  the jets being other than main propulsion jets (jet flaps B64C 9/38)
 B64C 17/00
Aircraft stabilisation not otherwise provided for
 B64C 17/02
·  by gravity or inertia-actuated apparatus
 B64C 17/04
·  ·  by pendular bodies
 B64C 17/06
·  ·  by gyroscopic apparatus (automatic-pilot control B64C 13/18)
 B64C 17/08
·  by ballast supply or discharge (for lighter-than-air aircraft B64B)
 B64C 17/10
·  Transferring fuel to adjust trim
 B64C 19/00
Aircraft control not otherwise provided for
 B64C 19/02
·  Conjoint controls
 B64C 21/00 - 
B64C 23/00
Influencing air-flow over aircraft surfaces, not otherwise provided for
 B64C 21/00
Influencing air-flow over aircraft surfaces by affecting boundary-layer flow (boundary-layer control in general F15D)
 B64C 21/02
·  by use of slot, ducts, porous areas, or the like
 B64C 21/04
·  ·  for blowing (B64C 21/08 takes precedence)
 B64C 21/06
·  ·  for sucking (B64C 21/08 takes precedence)
 B64C 21/08
·  ·  adjustable
 B64C 21/10
·  using other surface properties, e.g. roughness
 B64C 23/00
Influencing air-flow over aircraft surfaces, not otherwise provided for
 B64C 23/02
·  by means of rotating members of cylindrical or similar form
 B64C 23/04
·  by generating shock waves
 B64C 23/06
·  by generating vortices
 B64C 23/08
·  using Magnus effect
   
 B64C 25/00
Alighting gear (air-cushion alighting gear B60V 3/08)
 B64C 25/02
·  Undercarriages
 B64C 25/04
·  ·  Arrangement or disposition on aircraft
 B64C 25/06
·  ·  fixed
 B64C 25/08
·  ·  non-fixed, e.g. jettisonable
 B64C 25/10
·  ·  ·  retractable, foldable, or the like
 B64C 25/12
·  ·  ·  ·  sideways
 B64C 25/14
·  ·  ·  ·  fore-and-aft
 B64C 25/16
·  ·  ·  ·  Fairings movable in conjunction with undercarriage elements
 B64C 25/18
·  ·  ·  ·  Operating mechanisms
 B64C 25/20
·  ·  ·  ·  ·  mechanical
 B64C 25/22
·  ·  ·  ·  ·  fluid
 B64C 25/24
·  ·  ·  ·  ·  electric
 B64C 25/26
·  ·  ·  ·  ·  Control or locking systems therefor
 B64C 25/28
·  ·  ·  ·  ·  ·  with indicating or warning devices
 B64C 25/30
·  ·  ·  ·  ·  ·  emergency actuated
 B64C 25/32
·  characterised by elements which contact the ground or similar surface (arrester hooks B64C 25/68)
 B64C 25/34
·  ·  wheeled type, e.g. multi-wheeled bogies
 B64C 25/36
·  ·  ·  Arrangements or adaptations of wheels, tyres, or axles in general (construction of wheels or axles B60B; construction of tyres in general B60C)
 B64C 25/38
·  ·  endless-track type
 B64C 25/40
·  ·  the elements being rotated before touch-down
 B64C 25/42
·  ·  Arrangement or adaptation of brakes (the ground braking force being regulated, at least in part, by a speed condition, e.g. acceleration or deceleration of the ground engaging alighting gear, B60T 8/32)  [4]
 B64C 25/44
·  ·  ·  Actuating mechanisms
 B64C 25/46
·  ·  ·  ·  Brake regulators for preventing skidding or aircraft somersaulting
 B64C 25/48
·  ·  ·  ·  differentially operated for steering purposes
 B64C 25/50
·  ·  Steerable undercarriages; Shimmy-damping (steering devices applicable to land vehicles B62D)
 B64C 25/52
·  ·  Skis or runners
 B64C 25/54
·  ·  Floats
 B64C 25/56
·  ·  ·  inflatable (connection of valves to inflatable elastic bodies B60C 29/00)
 B64C 25/58
·  ·  Arrangements or adaptations of shock-absorbers or springs (shimmy-dampers B64C 25/50; vehicle suspension arrangements in general B60G; shock-absorbers per se F16F)
 B64C 25/60
·  ·  ·  Oleo legs
 B64C 25/62
·  ·  ·  Spring shock-absorbers; Springs
 B64C 25/64
·  ·  ·  ·  using rubber or like elements
 B64C 25/66
·  ·  Convertible alighting gear; Combinations of different kinds of ground or like engaging elements
 B64C 25/68
·  Arrester hooks (arresting gear, e.g. on aircraft carriers, B64F)
 B64C 27/00 - 
B64C 39/00
Aircraft kinds or components not otherwise provided for
 B64C 27/00
Rotorcraft; Rotors peculiar thereto (alighting gear B64C 25/00)
 B64C 27/02
·  Gyroplanes
 B64C 27/04
·  Helicopters
 B64C 27/06
·  ·  with single rotor
 B64C 27/08
·  ·  with two or more rotors
 B64C 27/10
·  ·  ·  arranged coaxially
 B64C 27/12
·  ·  Rotor drives
 B64C 27/14
·  ·  ·  Direct drive between power plant and rotor hub
 B64C 27/16
·  ·  ·  Drive of rotors by means, e.g. propellers, mounted on rotor blades
 B64C 27/18
·  ·  ·  ·  the means being jet-reaction apparatus
 B64C 27/20
·  Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
 B64C 27/22
·  Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
 B64C 27/24
·  ·  with rotor blades fixed in flight to act as lifting surfaces
 B64C 27/26
·  ·  characterised by provision of fixed wings
 B64C 27/28
·  ·  with forward-propulsion propellers pivotable to act as lifting rotors
 B64C 27/30
·  ·  with provision for reducing drag of inoperative rotor
 B64C 27/32
·  Rotors (features common to rotors and propellers B64C 11/00)
 B64C 27/33
·  ·  having flexing arms  [3]
 B64C 27/35
·  ·  having elastomeric joints  [3]
 B64C 27/37
·  ·  having articulated joints (B64C 27/33, B64C 27/35 take precedence)  [3]
 B64C 27/39
·  ·  ·  with individually articulated blades, i.e. with flapping or drag hinges  [3]
 B64C 27/41
·  ·  ·  with flapping hinge or universal joint, common to the blades  [3]
 B64C 27/43
·  ·  ·  ·  see-saw type, i.e. two-bladed rotor  [3]
 B64C 27/45
·  ·  ·  with a feathering hinge only  [3]
 B64C 27/46
·  ·  Blades
 B64C 27/467
·  ·  ·  Aerodynamic features  [6]
 B64C 27/473
·  ·  ·  Constructional features  [6]
 B64C 27/48
·  ·  ·  ·  Root attachment to rotor head
 B64C 27/50
·  ·  ·  ·  Blades foldable to facilitate stowage of aircraft
 B64C 27/51
·  Damping of blade movements  [3]
 B64C 27/52
·  Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C 27/43)
 B64C 27/54
·  Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
 B64C 27/56
·  ·  characterised by the control initiating means, e.g. manually actuated (B64C 27/58 takes precedence)
 B64C 27/57
·  ·  ·  automatic or condition responsive, e.g. responsive to rotor speed, torque or thrust  [3]
 B64C 27/58
·  ·  Transmitting means, e.g. interrelated with initiating means or means acting on blades (initiating means B64C 27/56; means acting on blades B64C 27/72)
 B64C 27/59
·  ·  ·  mechanical  [3]
 B64C 27/605
·  ·  ·  ·  including swash plate, spider or cam mechanisms  [3]
 B64C 27/615
·  ·  ·  ·  including flaps mounted on blades  [3]
 B64C 27/625
·  ·  ·  ·  including rotating masses or servo rotors  [3]
 B64C 27/635
·  ·  ·  ·  specially for controlling lag-lead movements of blades  [3]
 B64C 27/64
·  ·  ·  using fluid pressure, e.g. having fluid power amplification  [3]
 B64C 27/68
·  ·  ·  using electrical energy, e.g. having electrical power amplification  [3]
 B64C 27/72
·  ·  Means acting on blades
 B64C 27/78
·  ·  in association with pitch adjustment of blades of anti-torque rotor
 B64C 27/80
·  ·  for differential adjustment of blade pitch between two or more lifting rotors
 B64C 27/82
·  characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting-rotor torque or changing direction of rotorcraft
 B64C 29/00
Aircraft capable of landing or taking-off vertically (attitude, flight direction, or altitude control by jet reaction B64C 15/00; rotorcraft B64C 27/00; air-cushion vehicles B60V; details of jet-engine plants, e.g. of nozzles or jet pipes, F02K)
 B64C 29/02
·  having its flight directional axis vertical when grounded
 B64C 29/04
·  ·  characterised by jet-reaction propulsion
 B64C 30/00
Supersonic type aircraft  [3]
 B64C 31/00
Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft
 B64C 31/02
·  Gliders, e.g. sailplanes (hang-gliders B64C 31/028)  [6]
 B64C 31/024
·  ·  with auxiliary power plant  [6]
 B64C 31/028
·  Hang-glider-type aircraft; Microlight-type aircraft  [6]
 B64C 31/032
·  ·  having delta shaped wing  [6]
 B64C 31/036
·  ·  having parachute-type wing (parachutes B64D 17/00)  [6]
 B64C 31/04
·  Man-powered aircraft (ornithopters B64C 33/00)
 B64C 31/06
·  Kites (hang-gliders B64C 31/028; toy aspects A63H 27/08; towed targets F41J)
 B64C 33/00
Ornithopters
 B64C 33/02
·  Wings; Actuating mechanisms therefor
 B64C 35/00
Flying-boats; Seaplanes (alighting gear B64C 25/00)
 B64C 35/02
·  Flying-boat hulls  [3]
 B64C 37/00
Convertible aircraft (vehicles capable of travelling in or on different media B60F)
 B64C 37/02
·  Flying units formed by separate aircraft (towing, air-refuelling, or aircraft-carrying aircraft B64D)
 B64C 39/00
Aircraft not otherwise provided for
 B64C 39/02
·  characterised by special use
 B64C 39/04
·  having multiple fuselages or tail booms  [3]
 B64C 39/06
·  having disc- or ring-shaped wings  [3]
 B64C 39/08
·  having multiple wings  [3]
 B64C 39/10
·  All-wing aircraft  [3]
 B64C 39/12
·  Canard-type aircraft  [3]