{
    "title": "Alexey Chekurkov Graviflyer - Levitation device schematics, video, &c",
    "inventor_name": "Alexey Chekurkov",
    "publication_year": 2018,
    "device_name": "Graviflyer (Alexey Device)",
    "goal": "Achieve levitation / anti-gravity lift using electromagnetic and ultrasonic mechanisms.",
    "problem_addressed": "Providing a method to counteract gravity for hovercraft or lift-craft applications.",
    "concept_summary": "The device combines high-voltage Tesla-coil circuitry, ultrasonic piezoelectric sound generation, rotating textured metal discs, and magnetic elements. By tuning voltage, frequency and ultrasonic vibration to resonance, the system is claimed to produce a levitating force that can lift the device for several seconds.",
    "detailed_description": null,
    "principles": [
        "Electrostatics",
        "High-voltage discharge",
        "Resonance between electric fields and ultrasonic vibrations",
        "Acoustic levitation",
        "Magnetic vortex formation",
        "Tesla coil operation"
    ],
    "scientific_domains": [
        "Physics",
        "Electrical Engineering",
        "Acoustics",
        "Materials Science"
    ],
    "mechanisms_of_action": [
        "Electrostatic attraction/repulsion between charged rotating discs",
        "Acoustic pressure from ultrasonic piezoelectric speaker",
        "Magnetic field coupling between discs",
        "Resonant amplification of voltage and acoustic frequency"
    ],
    "materials": [
        "copper (brushes)",
        "stainless steel (textured metal)",
        "aluminum (foil layer)",
        "polycarbonate (disc substrate)",
        "electrolytic capacitors",
        "piezoelectric ceramic",
        "neodymium magnets (assumed)",
        "pancake motors (metal housing)"
    ],
    "energy_sources": [
        "12 V starter battery (DC)",
        "High-voltage switching power supply (Tesla coil)",
        "Secondary high-voltage power supply"
    ],
    "inputs": [
        "Electrical power (12 V DC)",
        "High-voltage AC/pulsed DC",
        "Ultrasonic sound waves",
        "Mechanical rotation from motors"
    ],
    "outputs": [
        "Levitation force (hover)",
        "Acoustic emissions",
        "Electromagnetic fields"
    ],
    "claimed_performance": "Device was shown levitating for several seconds in video demonstrations; lift-craft can hover and be guided.",
    "experimental_evidence": "Video recordings show the device hanging in the air for several seconds after disconnecting the starter battery; engineers have recreated parts of the schematic and observed similar behavior.",
    "replication_status": "No independent, peer-reviewed replication reported; only anecdotal attempts by hobbyists and a small engineering team.",
    "keywords": [
        "levitation",
        "anti-gravity",
        "Tesla coil",
        "ultrasonic",
        "high voltage",
        "resonance",
        "magnetic vortex",
        "hovercraft"
    ],
    "related_technologies": [
        "Acoustic levitation",
        "Electrostatic levitation",
        "Magnetohydrodynamics",
        "Resonant transformer (Tesla coil)"
    ],
    "controversy_level": "high",
    "confidence_score": 0.6,
    "practicability_score": 0.3,
    "fringe_score": 0.8,
    "evidence_strength": 0.5,
    "risk_score": 0.4,
    "trl_estimate": 3,
    "source_urls": [
        "http://www.rexresearch.com",
        "https://www.youtube.com/watch?v=48FEtLskKFY",
        "https://www.youtube.com/watch?v=Z-M55XP3D4A",
        "https://www.youtube.com/watch?v=pPLhMLWn-GI",
        "http://web.archive.org/web/20181015171628/http://www.clandestinedisclosure.com/alexey-device.html"
    ],
    "organizations": [
        "RexResearch",
        "Walter M. Nowosad Jr."
    ],
    "applications": [
        "Hovercraft / lift-craft",
        "Aerospace propulsion concepts",
        "Scientific research on levitation"
    ],
    "limitations": [
        "Exact composition of the \"special metal\" not disclosed",
        "No quantitative voltage/current specifications",
        "Reliance on high-voltage circuitry (safety hazard)",
        "Lack of independent verification",
        "Unclear scalability"
    ],
    "open_questions": [
        "What is the precise material and texture of the special metal?",
        "What exact voltage, current and frequency values are required for stable levitation?",
        "Can the device operate in a vacuum or only in air?",
        "What is the exact role and orientation of the magnets?",
        "How is resonance between electric fields and ultrasonic sound achieved?"
    ],
    "red_flags": [
        "Claims of anti-gravity without peer-reviewed evidence",
        "Potential pseudoscientific language",
        "Absence of reproducible data or independent testing"
    ],
    "evidence_quotes": [
        "The video whip-pans to reveal his device hanging in the sky for several seconds until everything discharges; and, it drops to the ground.",
        "We are unable to see all sides of them to determine interconnections. What as contained inside is unknown.",
        "The ultrasonic sound generator is most likely physically positioned above the top motor and hidden under what appears to be a plastic dome.",
        "Too much high-voltage can prevent levitation. Who knows what other variables factor into the equation?",
        "Based on his circuit, it appears voltage and current values are the only adjustable variables."
    ],
    "category": "Electromagnetism & Magnetism"
}