First Tellurium unit PyroDelta Energy readies heavy-lift coaxial UAV flight test

The design uses a 64-horsepower two-stroke engine with proprietary thermoelectric thermal management, derived from its DARPA Lift Challenge propulsion work.

With a 150-pound payload, the UAV is designed for up to four hours on one tank, aiming to outperform battery heavy-lift drones on endurance.

First Tellurium is seeking Canadian government and NGO support to advance manufacturing and commercialization of the platform.

PyroDelta Energy is nearing completion of a heavy-lift coaxial UAV targeting 450-pound gross weight with fuel.

The company plans a September 2026 flight test for a 150-pound aircraft designed to carry a 300-pound payload for two hours.