Graduates have already flown the world's first jet-turbine RC plane built mainly from filament, betting clever engineering can beat the Guinness speed benchmark for jet-powered model aircraft.
Mach 0.8 is territory most people only brush from an airliner window. A team of graduates wants to reach it with a remote-control aircraft whose airframe is printed largely from standard PETG — and, in the same motion, take the Guinness World Record for the fastest jet-powered model aircraft.
The aircraft has already flown. Its builders describe it as the world's first remote-control plane to combine a jet turbine with a primarily 3D-printed structure.
The material choice is where the story gets interesting. PETG is a commodity thermoplastic — the filament hobbyists reach for by default — prized for affordability and ease of printing rather than the heat tolerance or stiffness that serious airframes usually demand. That makes the project less a materials breakthrough than an argument about engineering: the team is betting that clever design, done on accessible equipment with off-the-shelf spools, can carry an airframe into a flight regime normally reserved for composites and metal. The headline achievement, in other words, is not what the plane is made of, but what its builders claim can be done with it.
The ambition is specific. Mach 0.8 — roughly eight-tenths the speed of sound — is the figure the team is chasing in its bid to unseat the current Guinness record holder for the fastest jet-powered model aircraft. The flight already completed is the proof-of-concept; the record attempt is the point.
If the attempt succeeds, the record books will say less about speed than about process: a graduates' project showing that additive manufacturing, used shrewdly, can push everyday plastic into rarefied air.
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