These files are large, so be patient during the download. OpenTX users, please read the readme.txt included in the ZIP
Lark is a high-performance 3D-printed UAV designed for versatility and efficiency. Featuring a classic layout with a pusher propeller and tail boom, it has been thoroughly tested in real flights and through CFD analysis to ensure reliability. The modular nose section is detachable, allowing users to install different cameras, sensors, or payloads, with the standard setup supporting a 19x19mm FPV camera and VTX. Design files are provided in STL and key STEP formats, making customization easy.
Optimized with an Eppler E193 airfoil and a center of gravity positioned 66mm from the leading edge, Lark flies most efficiently at 50–60 km/h. With the recommended motor, propeller, and a 4S battery, it cruises at about 30% power, drawing roughly 4A and achieving flight times exceeding 4 hours. A 3S battery can also be used, offering flexibility in setup. The aircraft supports both manual and autonomous flight configurations, making it a highly adaptable aerial platform.
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