Target flight time combining onboard batteries with solar energy harvested during flight.
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Prototype IV
Moulinsart
A long-endurance solar UAV and student-built solar plane developed as an experimental platform for aerodynamics, embedded electronics, energy management and future airborne technology validation.
Open Prototype IV
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Technical characteristics
Flight envelope
Long-range communication target between the aircraft and the ground station.
Solar cells integrated into the wings to maximise exposed collection area.
Biocomposite and balsa construction to balance stiffness, mass and manufacturability.
Target cruise speed selected to preserve aerodynamic efficiency and controllability.
Mass target designed to keep enough performance margin for payload and flight tests.
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Technical modules
Onboard systems
power module
MPPT: Maximum Power Point Tracking
The MPPT module tracks the solar array's optimal operating point so the aircraft can extract useful power despite changes in sunlight, angle of attack and load.
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control module
Flight Controller
The flight controller centralises sensor data, stabilises the aircraft and makes each flight test measurable, repeatable and easier to diagnose.
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aero structure
Fuselage
The fuselage is shaped to minimise drag while leaving enough internal volume for batteries, avionics, wiring and modular test hardware.
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