U.S UAV Engines

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ADX 500

Take Your UAV Performance Further with U.S. UAV Engines’ Next-Gen CNC Quad Boxer Systems

Introducing the latest evolution in UAV propulsion—our ultra-compact, high-performance CNC quad boxer engines, headlined by the powerful ADX 500. Engineered for demanding industrial UAV applications, this powerhouse delivers:

Exceptional Power & Reliability

  • Low Vibration, Maximum Output: Experience smooth, stable flight without compromising on thrust or efficiency.
  • Advanced Cooling & Endurance: Innovative cylinder architecture with separated heads ensures superior heat dissipation and long-term durability.

Modular, Customizable Design

  • Reinforced Crankshaft & Engine Framework: Built tough to minimize downtime and increase operational reliability.
  • Sensor & Cooling Flexibility: Customize sensor mounting points or modify cylinder heads to meet the cooling demands of your unique application.
  • Flexible Generator Options: Choose from three generator types, mounted front or rear, to streamline your onboard power solutions.

  • DUAL SPARK PLUG System: Add redundancy and safety for critical flight operations.

Why compromise when you can power your UAVs with industry-leading engineering? With the ADX 500 from U.S. UAV Engines, you gain top-tier performance, a superior power-to-weight ratio, and a platform designed to adapt, endure, and excel. Elevate your UAV systems with the new benchmark in engine technology.

Displacement: 493 ccm
Weight: 11800g w/o starter/13300g w.starter (ign.included)
Bore: 56mm
Stroke: 50mm
RPM range: 800-8500 ot/min
Ignition: processor-controlled, dampened casing,
Spark plugs: CM-6
Spark plug electrodes gap: 0,5-0,7mm
Intake system: Reed valves (Adler Italy)
Recommended oil: Full synthetic oil for two-stroke air-cooled engines
Recommended fuel: Automotive gas BA 95 or higher
Fuel mixture oil-gas: 1:30(break-in) 1:40 (normal run)
Carburetor: Walbro WB-27
Normal/Max CHT: 160/200 degrees of Celsius
Fuel consumption: 4,9l/hr @ 3500 RPM 40×16 twin blade propeller
Propeller configuration: Tractor or Pusher
MTBF: 320hrs

  1. Rotation Options: Our engines are available with customizable rotation—choose between clockwise (CW) or counterclockwise (CCW) configurations. This flexibility allows seamless adaptation to your propulsion system layout and aerodynamic requirements.
  2. Exhaust System: We offer two primary exhaust configurations. Standard SSA Compact or Direct Mount System. Additionally, we can engineer custom exhaust solutions to meet your specific spatial or thermal management needs.
  3. Double Spark Plug Heads: For enhanced safety and redundancy, our engines can be equipped with double spark plug heads. This ensures continued engine operation even in the event of a spark plug failure—ideal for mission-critical UAV operations.
  4. Additional Sensor Mounting Positions: We provide optional sensor mounting positions on the cylinder heads or crankcase, offering flexibility to integrate additional telemetry or monitoring systems tailored to your application.
  5. Cylinder Head Redesign: Our team can completely redesign cylinder heads to improve cooling efficiency or to ensure the engine fits within your custom cowl space—perfect for specialized airframe integration.
  6. Electric Starter: Optional electric starters enable quick and effortless engine start-ups, saving time and minimizing ground operation complexity.
  7. Automatic Deco Valves: For improved airborne restart capabilities, engines can be fitted with automatic decompression (deco) valves, making mid-air restarts more reliable and user-friendly.
  8. Integrated Power Generator: We offer engines with integrated brushless power generators, ensuring high-efficiency power output to support onboard electronics, payloads, and other mission systems.
  9. Custom-Made Backplates: We can design custom backplates that provide optimized mounting solutions and are tailored to fit the structural requirements of your UAV platform.
  10. Electronic Fuel Injection (EFI): Upgrade to electronic fuel injection for superior fuel efficiency, performance consistency, and altitude adaptability, ensuring top-tier engine behavior across varying environmental conditions.

Gallery

500B4 MJOLNIR angle b view with starter and exhausts instal
500B4 MJOLNIR angle view with starter and exhausts instaled
500B4 MJOLNIR backside with starter and exhausts installed
500B4 MJOLNIR AF back angle
500B4 MJOLNIR AF side
500B4 MJOLNIR Backshaft output and stator mounting point
500B4 MJOLNIR front view with starter and exhausts instaled