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Class Number: 244 Class Title: AERONAUTICS Subclass Subclass Number Title 1 R MISCELLANEOUS 1 N .Noise abatement 1 A .Lightning arresters and static eliminators 1 TD .Trailing devices 2 COMPOSITE AIRCRAFT 3 .Trains 3.1 MISSILE STABILIZATION OR TRAJECTORY CONTROL 3.11 .Remote control 3.12 ..Trailing wire 3.13 ..Beam rider 3.14 ..Radio wave 3.15 .Automatic guidance 3.16 ..Optical (includes infrared) 3.17 ...Optical correlation 3.18 ...Celestial navigation 3.19 ..Radio wave 3.2 ..Inertial 3.21 ..Attitude control mechanisms 3.22 ...Fluid reaction type 3.23 .Stabilized by rotation 3.24 .Externally mounted stabilizing appendage (e.g., fin) 3.25 ..Removable 3.26 ..Sliding 3.27 ..Collapsible 3.28 ...Longitudinally rotating 3.29 ...Radially rotating 3.3 ..Extending beyond rear of missile 158 R SPACECRAFT 159 .Space station 160 .Reentry vehicle 161 ..Rendezvous and docking 162 ..Manned 163 ...Environmental control 164 .Attitude control 165 ..By gyroscope or flywheel 166 ..By magnetic effect 167 ..By gravity gradient 168 ..By solar pressure 169 ..By jet motor 170 ..By nutation damper 171 ..With attitude sensor means 172 .With propulsion 173 .With solar panel 158 A .Exterior surface air resistance heat control 4 R AIRCRAFT, HEAVIER-THAN-AIR 5 .Airplanes, weight diminished by bouyant gas 6 .Airplane and helicopter sustained 7 R ..Convertible 7 A ...Rotary wing 7 B ...Tail sitters 7 C ...Tilting wing 8 .Airplane and auto-rotating wing sustainedd 9 .Airplane and paddle wheel sustained 10 .Airplane and cylindrical rotor sustained 11 .Airplane and beating wing sustained 12.1 .Airplane and fluid sustained 12.2 ..Circular 12.3 ..Dual propulsion 12.4 ..Thrust tilting 12.5 ..With thrust diverting 12.6 ..Channel wing 13 .Airplane sustained 14 ..Aerial torpedoes 15 ..Fluid propelled 16 ..Glider 17.11 .Helicopter or auto-rotating wing sustained, i.e., gyroplanes 17.13 ..Automatic or condition responsive control 17.15 ..With safety lowering device 17.17 ..With landing, mooring, or nonaerial propelling or steering gear 17.19 ..With auxiliary propulsion, counter-troque or steering device 17.21 ...Auxiliary rotor 17.23 ..Having plural lifting rotors 17.25 ..Lifting rotor having lift direction varying means 17.27 ..Lifting rotor supports, e.g., pylons 19 .Paddle wheel sustained 20 ..Feathering 21 .Cylindrical rotor sustained 22 .Beating wing sustained 23 R .Fluid sustained 23 A ..Lifting thrusters 23 B ..Dual propulsion means, horizontal and vertical 23 C ..Circular configuration 23 D ..Thrust diverters 4 A .Body attached 24 AIRCRAFT, LIGHTER-THAN-AIR 25 .Airships with sustaining wings 26 .Airship and helicopter sustained 27 .Airship and paddle wheel sustained 28 .Airship and beating wing sustained 29 .Airship and fluid sustained 30 .Airships 31 .Balloons 32 ..With parachutes 33 ..Captive 34 R AIRCRAFT SUSTENTATION 35 R .Sustaining airfoils 36 ..Lifting fuselages 37 ..Lifting struts 38 ..Resiliently mounted 39 ..Rotatable 198 ..With lift modification 199 ...By vortex generator or dissipator 200 ...By characteristic of airfoil's skin 201 ...Variable 202 ....With landing gear 203 ....Condition responsive 204 ....By controlling boundary layerr 205 .....With ionic or electrostatic surface 206 .....With rotating member 207 .....With blowing 208 ......And suction 209 .....With suction 210 .....With nose slot 211 ......Having trailing edge flap 212 .....Having trailing edge flap 213 ....By flap and/or spoiler 214 .....At leading edge 215 .....At trailing edge 216 ......Variable gap type, e.g., "Fowler Flap" 217 ......Plural, relatively pivotable 218 ....Area 219 ....Camber 45 R ..Arrangement 46 ...Variable 47 ....Dihedral 48 ....Incidence 49 ....Folding 45 A ...Canard 35 A ..Compressible flow 34 A .Annular airfoils 50 AIRCRAFT PROPULSION AND STEERING ON LAND OR WATER 51 AIRCRAFT, STEERING PROPULSION 52 .Fluid 53 R AIRCRAFT POWER PLANTS 54 .Mounting 55 .Arrangement 56 ..Tilting 57 .Radiator arrangement 58 .Auxiliary 59 .High altitude 60 .Transmission of power 61 .Power plant using airship gas as fuel 53 A .Starters 53 B .Air intakes 62 AIRCRAFT PROPULSION 63 .Launching 64 .Manual 65 .Screw 66 ..Tilting 67 ..Body encircling 68 ..Elongated 69 ..Contra-propeller arrangements 70 .Paddle wheel 71 .Reciprocating propeller 72 .Beating wing 73 R .Fluid 74 ..Explosive jet 73 B ..Vacuum induced by radial flow 73 C ..Radial outward and downward flow 75 R AIRCRAFT CONTROL 76 R .Automatic 175 ..Electric course control 176 ...Spaceship control 177 ...Multiple-axis altitude stabilization 178 ....Trim controll 179 ....By change in bank 180 ...By change in altitude 181 ....By change in pitch, angle of attack or flight path 182 ....By change in speed 183 ...Of aircraft on its landing course 184 ....By steering or yaw 185 .....And vertical glide path control 186 ....Vertical glide path control 187 .....With "flare-out" detection 188 .....Slope control by throttle 189 ...By remote radio signal 190 ....Of pilotless aircraft 191 ...Acceleration control 192 ...With "dead-zone" control 193 ...With "softener" circuit 194 ...Monitoring circuit or response 195 ....Self-adaptive control 196 ...Override of automatic control by human pilot 197 ....By engaging manual control system 78 ..Fluid 79 ..Gyroscope actuated 80 ..Gravity actuated 81 ..Operated by landing 82 ..Vane operated 76 A ..Motor torque control of flaps or tabs 76 B ..Velocity operated devices 76 C ..Gust compensators 76 J ..Steerable jets 220 .Pilot operated 221 ..Control system 222 ...Other than hand or foot actuated 223 ...With feel 224 ...With locking means 225 ...With dual purpose surface structure (e.g., elevons) 226 ...Fluid 227 ....With electric control 228 ...Electric 229 ...Dual 230 ...With variable output 231 ...With interengaging gearing 232 ...With cable and linkage 233 ...Cable 234 ..Controller 235 ...Rudder bar and pedal 236 ...Electrical pickup 237 ...Three-way steering, single control 87 .Rudders and empennage 88 ..Rudders universally mounted 89 ..Elevators both front and rear 90 R ..Ailerons and other roll control devices 90 A ...Roll control spoilers 90 B ...Balanced air pressure 91 .Vertical fins 92 .Stabilizing propellers 93 .Stabilizing weights 94 ..Ballast storage and release 95 ..Ballast making 96 .Airship controll 97 ..Buoyancy varying 98 ..Gas bag inflation 99 ..Gas release 75 A .Flutter prevention 100 R LANDING GEAR 101 .Amphibian 102 R .Retractable 102 A ..Interconnected elements 102 SL ..Strut locks 102 SS ..Strut shortening 103 R .Wheel 104 R ..Resiliently mounted 104 CS ...Coil spring 104 FP ...Fluid pressure 104 LS ...Leaf spring 103 S ..Prerotation 103 W ..Crosswind gear 105 .Water landing 106 ..Flying boat 107 ..Emergency 108 .Skids 109 .Tail supports 100 C .Endless track 100 A .Inflatable 110 R RETARDING AND RESTRAINING DEVICES 111 .Wheel brake arrangement 112 .Water brake arrangement 113 .Aerodynamic retarders 110 A .Brake 110 B .Thrust reversers 110 C .Cable or net support 110 D .Aerodynamic braking 110 E .Landing platforms 110 F .Snares 110 G .Arresting hoods 110 H .Friction brakes 114 R LANDING FIELD ARRANGEMENT 115 .Mooring devices 116 ..Movable 114 B .Blast deflectors 117 R AIRCRAFT STRUCTURE 118.1 .Load (e.g., cargo) accommodation 118.2 ..Removable, load bearing, airframe section 118.5 .Passenger or crew accommodation 118.6 ..Seating arrangement: berth or berthage 119 .Fuselage and body construction 120 ..Sectional 121 ..Shields and other protective devices 122 R ..Seats and safety belts 122 A ...Ejection seats 122 AB ....Catapult and rocket combined 122 AC .....Catapult 122 AD .....Rocket 122 AE ....Automatic sequence 122 AF .....Canopy release 122 AG .....Restraint positioning and protective devices 122 AH .....Seat separation 122 B ...Safety beltss 123 .Airfoil construction 124 ..Sectional 125 .Airship hull construction 126 .Airship skin construction 127 .Airship load attachment 128 .Airship gas cell construction and arrangement 129.1 .Details 129.2 ..Fire prevention devices 129.3 ..Windows 129.4 ..Closures 129.5 ...Door 118.3 ....Displaceable to function as ramp 129.6 ..Steps 130 ..Aerodynamic resistance reducing 131 ..Joints and connections 132 ..Skin fastening devices 133 ..Materials of construction 134 R .Ice prevention 134 A ..Flexible surfaces 134 B ..Heating fluid in airfoil 134 C ..Deicing fluid on airfoil exterior 134 D ..Electric 134 E ..Nature of surface 134 F ..Initiators and indicators 135 R .Fuel supply 135 A ..Aircraft refueling 135 B ..Flexible containers 135 C ..Fuel balancing systems 136 .Material discharging and diffusing 137.1 .Passenger or cargo loading or discharging 137.2 ..Passenger 137.3 ..Aerial cargo unloading by parachute extraction 137.4 ..Releasable, externally mounted cargo 117 A .Skin cooling 138 R SAFETY LOWERING DEVICES 139 .Entire aircraft 140 .Passenger compartment 141 ..Seat 142 .Parachutes 143 ..Garment attached 144 ..Aircraft element convertible to parachute 145 ..Canopy construction 146 ..Inflated bracing 147 ..Storage and release 148 ...Packs 149 ...Opening devices 150 ...Timing mechanism 151 R ..Harness 151 A ...Parchute harness connection 151 B ...Parachute load releasing 152 ..Control devices 138 A .Rotating vanes 153 R KITES 154 .Airplane type 155 R .Accessories 155 A ..Kite controls 153 A .Rotating * ******************************* * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 LIGHTWEIGHT, WINGED, AIR VEHICLE (E,G,. ULTRALIGHT or HANG GLIDER) 901 .Having delta shaped wing 902 .Having parachute type wing 903 .Powered 904 .Miscellaneous hardware or control 905 INFLATABLE EVACUATION SLIDE