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Dillon Ruble and Garrett Jensen, two engineers working at Boeing, broke a record in December that had only a little to do with their day jobs: They set a new world record for farthest flight by a paper aircraft, sending a sheet of paper 88.318 meters, or almost 290 feet.

Ruble and Jensen accomplished (hoàn thành) the feat (chiến công, chiến tích) with the help of Nathaniel Erickson; all three are cited on the Guinness World Records page, though Ruble is the one who threw the plane on its record-shattering (xô đổ kỷ lục) flight.

Ruble and Jensen studied origami and aerodynamics for months, putting in 400 to 500 hours of creating different prototypes to try to design a plane that could fly higher and longer.

“For the Guinness World Records, we ended up going with A4-sized paper (dimensions of 210 x 297 mm) and went up to the maximum for weight, 100 grams per square meter,” Jensen said. “The heavier the paper, the greater the momentum when you go to throw it.”

It takes over 20 minutes to accurately fold the record-breaking paper airplane design.

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