Launch HN: Airhart Aeronautics (YC S22) – A modern personal airplane

Hacker News Discussion ↗

Concept and Goals

  • Startup is building a modern general-aviation airplane with fly‑by‑wire, “simplified vehicle operations,” and custom avionics on a Sling TSi airframe.
  • Aims: prevent stalls/spins and loss of control, automate planning/routing and parts of preflight, and make flying “as easy as driving” for 50–300 mile trips.
  • First product: ~$500k experimental aircraft, positioned as a “roadster”; long‑term goal is sub‑$100k models and much larger GA market.

Pilot Training, Safety, and Automation

  • Supporters like envelope protection, autoland, and a ballistic parachute; some compare it to “GA Airbus” and note these could reduce base‑to‑final stall‑spin accidents.
  • Others argue most accidents start with bad decisions, not stick‑and‑rudder limits, and fear less training on fundamentals (stall recovery, weather, emergency handling).
  • Worries about “Tesla FSD”‑style overtrust: pilots flying seldom, relying on automation, then failing when it degrades.
  • Debate over whether pilots should ever stop training stall recovery; several see that idea as dangerous.

Technology & Reliability Concerns

  • Many technical questions about:
    • How envelope protection behaves under upset, turbulence, or faulty sensors (pitot/AoA icing, blocked lines).
    • Redundancy of MEMS gyros vs traditional laser-ring gyros, actuator failure modes, and “direct law” reversion.
    • How crosswind landings, slips, steep turns, or icing are handled or constrained.
  • Some like the active, force‑feedback stick and see potential for high‑fidelity in‑cockpit simulation practice.

Regulation, Certification, and Market Economics

  • Multiple comments highlight FAA certification, MOSAIC/LSA rules, and liability as the real bottlenecks in GA innovation, not hardware.
  • Skepticism that a small startup can certify FBW and custom avionics cheaply enough; many cite Garmin’s dominance and historical failures of similar efforts.
  • Questions around insurance cost, ownership costs, dispatch reliability, and whether enough non‑pilots can be converted to make the economics work.

Use Cases vs Alternatives

  • Some pilots love GA for medium trips and places airlines don’t serve; others say US distances and weather make small planes impractical versus driving or regional jets.
  • Large subthread argues that better intercity and high‑speed rail is a more scalable, efficient answer than “flying cars.”

Environmental & Noise Impact

  • Strong criticism that expanding personal aviation worsens CO₂ and local pollution (especially vs cars/trains) and noise over communities.
  • Startup replies: first plane uses unleaded fuel; future plans for more efficient, possibly hybrid‑electric or hydrogen designs, but many remain unconvinced and see this as “green” rhetoric.

Reception and Open Questions

  • Overall tone: admiration for ambition and technical depth but heavy skepticism about:
    • “Impossible to lose control” claims and legal exposure.
    • Market size at current price point.
    • Environmental justification for trying to get “everyone flying.”
  • Several note that even a partial success that meaningfully improves GA safety would still be valuable.