Electric Aircraft Patents

Electric aircraft patents cover eVTOL aircraft configuration including rotor geometry and tilt mechanisms; propulsion motor and power electronics for aviation; battery system certification and thermal management; autonomous flight control; and vertiport infrastructure — with IP concentrated in a set of well-funded eVTOL startups and established aerospace companies: MAJOR ELECTRIC AIRCRAFT PATENT HOLDERS: JOBY AVIATION: 300+; specific eVTOL design (specific specific 6-tilt-rotor configuration: specific specific six 2-blade propellers from specific specific tiltable nacelle for specific specific vertical takeoff forward flight transition for specific specific 200 mph cruise speed at specific specific 1,000+ ft AGL from specific specific 30-nm range at specific specific 2,000 ft cruise altitude + specific specific BRS ballistic recovery parachute option for specific specific emergency; specific specific contra-rotating propeller: specific specific two counter-rotating blade sets for specific specific torque cancellation + specific specific vibration reduction for specific specific cabin noise <65 dB for specific specific passenger comfort in specific specific urban air mobility UAM; specific specific FAA Part 23 certification: specific specific acoustic certification FAA Stage 4 from specific specific <70 EPNdB at specific specific approach vs. specific specific helicopter 80-100 dB for specific specific community acceptance); WISK AERO (BOEING JV): 200+; specific autonomous eVTOL (specific specific Cora 12-rotor autonomous eVTOL: specific specific 12 fixed-lift rotors + specific specific pusher prop from specific specific full-autonomy system for specific specific BVLOS beyond visual line of sight from specific specific computer vision + specific specific GPS + specific specific ADS-B from specific specific FAA Part 135 ATCO air carrier certificate pursuit); ARCHER AVIATION: 200+; specific eVTOL (specific specific Midnight 12-tiltrotor: specific specific 12 front-tilt prop + specific specific rear push prop from specific specific 60-nm range at specific specific 60-mph cruise for specific specific UA UAM United Airlines partnership at specific specific 200+ aircraft order); LILIUM: 200+; specific electric jet VTOL (specific specific Lilium Jet: specific specific 36 movable electric fan flaps from specific specific ducted fan embedded in specific specific canard+wing for specific specific VTOL→cruise transition without specific specific separate rotor for specific specific 300 km/h cruise + specific specific 300 km range with specific specific lower noise vs. specific specific open rotor eVTOL); PIPISTREL (TEXTRON ACQUIRED): 200+; specific certified electric aircraft (specific specific Velis Electro: specific specific EASA type certificate 2020 first certified electric aircraft from specific specific 57.6 kWh battery + specific specific 57.6 kW Austro AE motor for specific specific 2-seat all-electric trainer at specific specific 50-min flight time); ROLLS-ROYCE; SAFRAN; GE AEROSPACE; AIRBUS (E-FAN X); ZUNUM AERO (BOEING): 5,000+ combined aerospace including hybrid electric.

High-power-density electric motor design for aviation applications; battery system design meeting DO-311A aviation certification; and distributed electric propulsion DEP concepts enabling boundary layer ingestion and aerodynamic efficiency gains represent three technically differentiated electric aircraft innovation domains: PROPULSION MOTOR PATENTS: JOBY AVIATION; MAGNIX; ROLLS-ROYCE; SIEMENS/ROLLS-ROYCE E-FAN X; GE AVIATION; SAFRAN; PIPISTREL: specific electric aircraft motor (specific specific PMSM permanent magnet synchronous motor: specific specific 200 kW peak at specific specific 5,000-12,000 RPM from specific specific rare-earth NdFeB Halbach array magnet configuration for specific specific 5-7 kW/kg specific power at specific specific >96% efficiency from specific specific interior permanent magnet IPM or specific specific axial flux topology for specific specific compact eVTOL motor for specific specific FAR Part 33 engine certification; specific specific magnix magni250/magni500: specific specific 250 kW/500 kW direct-drive propeller motor from specific specific liquid-cooled stator for specific specific Cessna Caravan conversion Harbour Air seaplane + specific specific de Havilland Beaver retrofit; specific specific axial flux: specific specific Emrax/YASA axial flux motor from specific specific pancake form factor for specific specific high torque density for specific specific low-speed multi-rotor eVTOL at specific specific 2-3 kW/kg); BATTERY AVIATION PATENTS: JOBY AVIATION; ARCHER; CUBERG (NORTHVOLT); SION POWER; AMPRIUS; LILIUM: specific aviation battery (specific specific DO-311A certification battery: specific specific lithium ion aviation battery from specific specific DO-311A RTCA standard for specific specific cell-level thermal runaway propagation test + specific specific overcharge+over-discharge + specific specific short circuit protection from specific specific BMS battery management system for specific specific FAA special condition for powered lift eVTOL; specific specific pouch lithium NMC 811: specific specific 300 Wh/kg at specific specific cell level for specific specific eVTOL application with specific specific C-rate 10C+ at specific specific 2C continuous discharge for specific specific VTOL high-power phase peak demand from specific specific LFP safety tradeoff at specific specific 180 Wh/kg for specific specific commercial safety preference; specific specific silicon anode: specific specific Amprius/Sion 450 Wh/kg silicon nanowire anode + specific specific NMC cathode for specific specific future eVTOL range extension at specific specific same weight); DISTRIBUTED ELECTRIC PROPULSION PATENTS: NASA; XPLANE (UBER ELEVATE); TEXTRON (BELL); EMBRAER: specific DEP (specific specific boundary layer ingestion BLI: specific specific embedded propulsor at specific specific aircraft fuselage trailing edge from specific specific ingesting boundary layer for specific specific reduced effective drag + specific specific 10-15% efficiency improvement vs. specific specific podded propeller from specific specific NASA X-57 Maxwell 14-motor DEP research; specific specific differential thrust control: specific specific individual motor speed control from specific specific distributed FCS flight control system for specific specific roll+yaw moment from specific specific differential thrust in specific specific hover for specific specific reduced or specific specific eliminated conventional tail rotor for specific specific eVTOL hover control without specific specific tail).

Vertiport infrastructure design and operations management technology; autonomous eVTOL flight control with detect-and-avoid DAA capability; and hybrid-electric turbine-generator propulsion for regional and commuter aircraft beyond battery-only range represent three additional electric aircraft patent domains: VERTIPORT PATENTS: VOLOPORT (VOLOCOPTER); ARCHER; JOBY; SKYPORTS; LILIUM; EMBRAER: specific vertiport infrastructure (specific specific modular vertiport: specific specific VTOL landing pad 15×15m from specific specific modular composite deck structure for specific specific rooftop or specific specific ground-level from specific specific rapid-charge DC fast charge 350kW+ connector for specific specific 10-min ground turn with specific specific safety sensor suite from specific specific fence detection + specific specific intrusion detection + specific specific weather station for specific specific autonomous approach guidance from specific specific radio + specific specific visual ILS equivalent system; specific specific passenger terminal: specific specific secure boarding bridge for specific specific air taxi from specific specific biometric digital ID + specific specific baggage screening for specific specific Part 135 passenger); AUTONOMOUS FLIGHT CONTROL PATENTS: WISK; JOBY; ARCHER; XWING; RELIABLE ROBOTICS: specific autonomous eVTOL flight (specific specific detect-and-avoid DAA: specific specific ADS-B In + specific specific radar + specific specific vision camera from specific specific TCAS-equivalent for specific specific non-cooperative traffic detection + specific specific intruder bearing+range+altitude from specific specific fusion for specific specific ACAS-X alert+maneuver advisory for specific specific FAA autonomous flight rules; specific specific urban airspace navigation: specific specific RNP AR required navigation performance curved approach from specific specific 3D building footprint map + specific specific LiDAR terrain + specific specific GPS/SBAS for specific specific vertiport approach/departure corridor in specific specific dense urban airspace at specific specific <50m lateral accuracy for specific specific safe separation from specific specific buildings+obstacles); HYBRID ELECTRIC PROPULSION PATENTS: GE AVIATION; ROLLS-ROYCE; SAFRAN; PRATT+WHITNEY; TEXTRON CESSNA: specific hybrid electric aircraft (specific specific turboelectric SOFC: specific specific ZeroAvia ZA2000 hydrogen fuel cell+motor turboprop: specific specific alkaline PEM hydrogen fuel cell 600 kW from specific specific compressed H2 onboard for specific specific 600nm range at specific specific 19-seat Dornier 228 conversion for specific specific zero-CO2 regional commuter; specific specific series hybrid: specific specific turbine generator charging battery from specific specific 1 MW turbogenerator + specific specific 3 MW electric motor for specific specific range-extended electric aircraft at specific specific 1,000+ nm vs. specific specific battery-only 150nm limitation for specific specific ATR 42 class commercial aircraft replacement); specific specific turbo-electric DEP: specific specific gas turbine + specific specific superconducting generator + specific specific cryogenic HTS cable for specific specific multi-motor wing from specific specific NASA STARC-ABL 2035 entry into service concept.

Electric aircraft startup IP strategy must navigate significant FAA and EASA certification IP in aviation system design; the importance of safety-critical system claims; concentrated portfolio building by Joby Aviation and Boeing/Wisk; and the unique role of trade secrets in proprietary flight control software: ELECTRIC AIRCRAFT STARTUP IP STRATEGY: UNDERSTAND THE ELECTRIC AIRCRAFT IP LANDSCAPE: JOBY AVIATION DOMINANT EVTOL FILER: Joby Aviation (300+) has the most extensive eVTOL patent portfolio and achieved FAA Stage 4 acoustic certification in addition to military contract — most advanced certification pathway; new eVTOL startups should FTO against Joby tilt-rotor configuration IP; WISK AUTONOMOUS EVTOL: Wisk (200+; Boeing JV) has built an autonomous-focused eVTOL portfolio — particularly relevant to any startup pursuing BVLOS autonomous eVTOL operations; ARCHER AND LILIUM DESIGN-SPECIFIC IP: Archer (12-tiltrotor) and Lilium (ducted fan embedded in wing) each hold design-specific configuration IP — most relevant to startups with similar configurations; CERTIFIED ELECTRIC AIRCRAFT LIMITED: Pipistrel/Textron Velis Electro is the only fully type-certified electric aircraft (EASA 2020) — FAA certification for larger electric aircraft still pending; first-mover in specific certification category creates real regulatory moat; MAGNIX MOTOR: magnX (UK/Canada) has built a focused retrofit-motor portfolio for commercial piston conversion — relevant to any commercial retrofit electric propulsion startup; WHEN TO PATENT IN ELECTRIC AIRCRAFT: NOVEL EVTOL CONFIGURATION WITH MEASURED PERFORMANCE PARAMETERS: specific novel aircraft configuration (specific specific rotor count + specific specific placement + specific specific tilt mechanism geometry) with specific measured aeroacoustic noise level EPNdB at specific specific operating conditions + specific specific hover efficiency figure of merit FM + specific specific cruise L/D lift-to-drag ratio + specific specific transition time s vs. specific specific Joby 6-tilt configuration or specific specific Archer 12-tiltrotor baseline — measured acoustic and aerodynamic data is critical for distinguishing from prior art configurations; NOVEL ELECTRIC MOTOR FOR AVIATION WITH MEASURED SPECIFIC POWER: specific novel motor architecture (specific specific winding configuration + specific specific magnet arrangement + specific specific cooling approach) with specific measured specific power kW/kg + specific specific efficiency % at specific specific operating point + specific specific temperature margin °C at specific specific peak power + specific specific reliability MTF hours vs. specific specific magnix or specific specific existing aviation motor specification; NOVEL BATTERY SYSTEM MEETING AVIATION CERTIFICATION REQUIREMENTS: specific novel battery pack architecture (specific specific cell configuration + specific specific BMS topology + specific specific thermal management design) with specific measured energy density Wh/kg at specific specific pack level + specific specific peak C-rate + specific specific thermal runaway propagation test outcome at specific specific DO-311A test condition + specific specific charge cycle life at specific specific representative eVTOL duty cycle vs. specific specific existing aviation battery system; CERTIFICATION REGULATORY MOAT: FAA type certificate for powered lift requires Proposed Means of Compliance PMOC — first aircraft in category establishes means of compliance others must follow; ITAR APPLICABILITY: electric aircraft with propulsion system performance above certain thresholds may fall under ITAR USML Category VIII(i) — consider ITAR implications in international patent filing strategy; § 101: electric aircraft hardware = fully patent-eligible; flight control algorithm alone = potential Alice risk; anchor flight control software claims to specific hardware sensor+actuator integration; TRADE SECRETS: flight control software; battery management algorithm; certification test protocol; proprietary simulation model; KEY FTO: Joby 6-tilt-rotor contra-rotating FAA Stage 4 <70 EPNdB; Wisk Cora 12-rotor autonomous BVLOS ADS-B+vision DAA; Archer Midnight 12-tiltrotor United Airlines production; Lilium 36 ducted fan flap embedded canard+wing 300 km/h 300 km; Pipistrel Velis Electro EASA first type-certified electric aircraft; magnix magni250/magni500 direct-drive propeller 250 kW/500 kW liquid-cooled; Amprius silicon nanowire anode 450 Wh/kg; ZeroAvia H2 PEM fuel cell 600 kW Dornier 228 zero-CO2; NASA X-57 Maxwell 14-motor DEP BLI 10-15% efficiency improvement.