Question ledger — Drones, UAVs, eVTOLs, flying cars (v2)

Revision: v2 follow-up round — denser, decision-oriented secondaries after package v1. Prior v1 questions remain answered in chapters 01–09; v2 adds mechanism, economics, regulation, and falsifiers.

Status: Round 2 researched and patched (chapter 10 + updates to 04, 05, 07, 08, 09, index, references). v2.1 adds P13 geometry + UTM/AAM ATC (chapter 11). v2.2 adds drone Grand Prix / FPV racing leagues (MultiGP, DRL, DCL, FAI, Airspeeder) with product photos in chapter 08. Ledger open items still include Part 108 final rule text, first passenger TC network, dual-mode production cert, city-scale federated UTM.

Why v2

Round 1 answered taxonomy, history, trends, and SOTA slices well but left thin: BVLOS rule status, delivery unit economics, noise/cert residual risk, pack-level energy evidence, mass-vs-swarm operational criteria, dual-mode flying-car certification facts, counter-UAS cost curves, and hydrogen/hybrid as real alternatives.

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Primary questions (v2 set — 12)

P1 — Category boundaries that change law and product

(v1 solid; v2 deepens edge cases)
- S1.1 When is a one-way attack UAV a munition vs an aircraft for export control and LOAC?
- S1.2 Does “drone” in insurance/liability track mass, kinetic energy, or autonomy level?
- S1.3 How do EU class identification labels (C0–C6) vs FAA Part 107/<250 g change design targets?
- S1.4 What fails if we treat passenger eVTOL residual risk like small UAS risk?
- S1.5 Where do tethered drones and high-altitude pseudo-satellites sit on the map?

P2 — Multirotor physics limits (not marketing)

• S2.1 What disk loading / hover power scaling makes passenger multirotors painful?
• S2.2 Why does induced power dominate small multirotor endurance more than drag?
• S2.3 When does variable-pitch multirotor or single main rotor beat fixed-pitch?
• S2.4 What L/D do lift+cruise and tilt designs need to beat pure hover for 50–150 km missions?
• S2.5 How much of “range anxiety” is reserve policy (VFR reserves, alternate, contingency) not cells?

P3 — Price-performance: what actually compounded?

• S3.1 Which BOM line items fell fastest 2012–2026 (sensors, motors, compute, airframe, batteries)?
• S3.2 Why did consumer unit growth stall while enterprise/defense kept growing?
• S3.3 What is the true fully burdened cost of a combat FPV system (airframe + goggles + links + munition + training)?
• S3.4 How sticky is DJI share if US/EU bans harden — performance gap vs switching cost?
• S3.5 Are “under $50 toy drones” a market or a different product category entirely?

P4 — Energy: battery, hybrid, hydrogen — decision rules

• S4.1 Best public pack Wh/kg bands for (a) FPV (b) camera multirotor (c) eVTOL prototypes?
• S4.2 What cycle life and C-rate kill lab Wh/kg claims in real drone duty cycles?
• S4.3 When does hybrid-electric win on $/ton-km or mission reliability?
• S4.4 Hydrogen fuel-cell UAV demos: endurance gains vs ground logistics pain?
• S4.5 What energy density would falsify “batteries forever gate urban air taxis”?

P5 — BVLOS, DAA, UTM: the soft bottleneck with hard teeth

• S5.1 What is the actual US regulatory status of comprehensive BVLOS (Part 108 / NPRM) as of mid-2026?
• S5.2 How do waivers vs rules-of-the-road scale fleet economics differently?
• S5.3 What detect-and-avoid performance (range, weather, non-cooperative traffic) is “good enough”?
• S5.4 Remote ID: solved, theater, or enforcement gap?
• S5.5 How do Europe U-space and US BEYOND/UTM efforts differ in operational reality?

P6 — Delivery and logistics economics

• S6.1 For which route geometries does drone beat van last-mile on total cost?
• S6.2 What payload × distance × weather availability kills grocery-drone business cases?
• S6.3 How do docked autonomous networks change pilot OPEX vs one-pilot-one-drone?
• S6.4 Medical/blood/defibrillator corridors: why these scale before pizza?
• S6.5 Heavy-lift construction/sling: competitor to crane or to helicopter?

P7 — Military mass, autonomy, and “swarm” criteria

• S7.1 Operational test: what observables separate swarm from salvo or mass FPV?
• S7.2 How has EW changed required autonomy (GPS-denied, fiber FPV, terminal seekers)?
• S7.3 Cost-exchange ratio: interceptor/C-UAS shot vs attritable drone — who is winning 2024–2026?
• S7.4 What did OFFSET actually leave as reusable tech vs demo?
• S7.5 Orchestrator / mixed-fleet C2: is software now scarcer than airframes?

P8 — Passenger eVTOL certification and noise

• S8.1 Where are Joby and Archer on FAA powered-lift stages with primary-source anchors?
• S8.2 What noise metrics (EPNdB, community metrics) gate vertiport siting?
• S8.3 Pilot onboard vs autonomous passenger: which certification path is nearer?
• S8.4 Unit cost and utilization assumptions needed for ticket ≈ rideshare×k?
• S8.5 Which city/regulator pairs are real early markets vs slideware?

P9 — Flying cars: dual-mode falsifiers

• S9.1 Has any roadable eVTOL held concurrent production road legality + production aircraft type certificate?
• S9.2 Alef special airworthiness: what does it allow and not allow?
• S9.3 Ultralight / Part 103-style paths: safety externalities of “no license” marketing?
• S9.4 ASKA hybrid claims: what must be true about generator + batteries for 250 mi?
• S9.5 If air taxis win, is the roadable flying car permanently niche?

P10 — Sensors, AI, networks — where value accrues

• S10.1 Is the moat in airframes, payloads, fleet software, or data/models?
• S10.2 Onboard vs edge vs cloud split for inspection analytics in 2026?
• S10.3 GNSS-denied navigation: mature product or research with demos?
• S10.4 LEO satcom for small UAS: cost/latency/jam risk trade?
• S10.5 Foundation models for flight: hype vs shipped features (tracking, inspection, planning)?

P11 — Counter-UAS and civil security

• S11.1 Why are domestic C-UAS authorities still fragmented in the US?
• S11.2 Soft kill (EW) vs hard kill economics against FPV and one-way UAVs?
• S11.3 Stadium/prison/airport protection: what works at civil RF constraints?
• S11.4 Does cheap offense permanently outrun defense, or is layered C-UAS stabilizing?
• S11.5 Privacy and policing drones: which constraint binds first — law or tech?

P12 — Second-order and strategy

• S12.1 Bits–atoms counterpart: when should you move bits (remote sensing) instead of atoms (delivery)?
• S12.2 Labor: which jobs compress first (inspectors, cinematographers, artillery spotters)?
• S12.3 Insurance and residual risk: who pays when autonomy fails?
• S12.4 Export controls and drone geopolitics as industrial policy
• S12.5 What would a skeptical CFO fund in 2026–2028 vs avoid?

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Rabbit holes (v2 priority)

• RH-A FAA BVLOS / Part 108 timeline and text status
• RH-B Joby/Archer primary certification milestones 2025–2026
• RH-C Delivery cost models (Zipline, Wing, Amazon Prime Air public claims)
• RH-D Ukraine EW + fiber-optic FPV as autonomy driver
• RH-E Noise certification literature for eVTOL
• RH-F Hydrogen UAV case studies
• RH-G Alef FAA special airworthiness primary docs
• RH-H 3D airspace geometry + UTM/U-space builders (Uber Elevate→Joby; ANRA; Indra/Altitude Angel)

Primary questions (v2.1 add)

P13 — Geometry of traffic and digital ATC

• S13.1 Why must non-parallel paths in a plane meet, and how does that map to road jams?
• S13.2 What conflicts remain after moving to 3D trajectories (same volume-time, vertiport funnels, corridors)?
• S13.3 What is UTM vs classical ATM, and why voice ATC does not scale to dense small UAS?
• S13.4 What is EU U-space (USSP/CISP) vs NASA/FAA UTM architecture?
• S13.5 What was Uber Elevate (2016 white paper; summits; Copter), and what transferred to Joby in 2020?
• S13.6 Who ships commercial UTM pieces (ANRA, Airspace Link, Indra/GuardianUTM heirs, Thales, Airbus) and what fails commercially?
• S13.7 How do altitude bands and one-way corridors re-introduce structure without deleting 3D freedom?

Primary questions (v2.2 add)

P14 — Drone Grand Prix / FPV racing as sport industry

• S14.1 How does MultiGP’s chapter + World Championship ladder differ from DRL’s league-owned racer model?
• S14.2 What is DCL mixed-reality (sim → live) actually optimizing for — broadcast, talent pipeline, or AI demos?
• S14.3 Where does FAI World Drone Racing Championship sit relative to commercial leagues?
• S14.4 Is Airspeeder “flying car F1” continuous with FPV racing or a separate manned eVTOL motorsport?
• S14.5 How much did FPV race culture transfer into wartime attritable FPV — skill, hardware, or both?

Answer routing (round 2 + v2.1 + v2.2)

Cluster	Primary sink file
Physics/energy	02, 04, 05
BVLOS/econ delivery	04, 05, 10
Military swarm/C-UAS	07, 08
eVTOL cert/noise	08, 05
Flying cars dual-mode	09
Sensors/AI moat	06
3D geometry + UTM	11
Drone Grand Prix / racing	08 (+ essay ch. 09)
Cross-cutting synthesis	index short answers

Unresolved after v2.1

Keep only items that remain evidence-thin after this round; close or downgrade others in chapter patches. UTM vendor market share and city-scale production LOAs remain fluid.