Unmanned Aerial Vehicle · UAV-01

Meet
Dreoilín

EirSpace’s first fixed-wing UAV

Based on the Flightory Stallion, Dreoilín is our first-ever UAV — designed to give the team the experience they need in building and flying a truly autonomous aerial vehicle.

Fixed-Wing 3D Printed V-Tail Carbon Fibre Dual Propeller
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Dreoilín — EirSpace UAV-01
PLA
Airframe Material
2×
Electric Propellers
4
Control Surfaces
CF
Structural Rods
2027
IMechE UAS Target
Mission

Based on the Flightory Stallion, Dreoilín is our first-ever UAV, designed to give the team the experience they need in building and flying a truly autonomous aerial vehicle. Through Dreoilín, the team learned how to manufacture and assemble a fixed-wing UAV, which manufacturing methods work and which are less than ideal.

While Dreoilín will not enter any competitions, she is an important milestone as we aim to enter the IMechE UAS Challenge in 2027.

The Name

Dreoilín gets her name from the Irish word for a wren. The wren is an important bird in Irish folklore, depicted as wise and the king of the birds. One of the best-known Celtic folk tales depicts all the birds competing to see who could fly the highest.

The eagle seemed certain to win, but the tiny wren hid in the eagle’s feathers. When the eagle became exhausted, the wren flew out and rose just a little higher, winning through intelligence rather than strength.

🪶
Dreoilín
Irish — Wren

Wise. Small. King of the birds.
Intelligence over strength — the spirit behind every engineering decision on this aircraft.

Structure
01
Airframe
Dreoilín is almost entirely 3D printed from lightweight PLA. This provides a very low mass fuselage and wing section and allows for a greater margin when it comes to the selection of electronics.
02
Wing Structure
Two carbon fibre rods hold the wings of Dreoilín together, lowering the stress in the wings during flight. Dreoilín’s wings taper down their length so as to create laminar flow through the entire wing section.
03
Propulsion
In the centre of each wing is an electric propeller which generates the thrust needed to sustain flight.
04
V-Tail & Control Surfaces
Dreoilín features a V-tail connected to the fuselage by a 16mm carbon fibre rod and held together by four 4mm carbon fibre rods. Four actuated control surfaces are used to stabilise and steer in flight — two ailerons on the wings and two elevators on the V-tail.
What’s next
The journey continues

Dreoilín is just the beginning. She is an important milestone as EirSpace aims to enter the IMechE UAS Challenge in 2027.

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