The idea that started this project could not be bigger or simpler: launch more model rockets at a single moment than anyone has managed before, and claim the world record. College Leeuwenhorst turned that idea into a whole-college effort, with roughly 250 students and 50 staff members building kits over three weeks.
Construction stayed basic and repeatable, which seems wise at this scale. Each rocket used a cardboard tube for the body, a plastic fin can, a black plastic nose cone, and a red-and-white film streamer in plastic. String, glue, sandpaper and small mallets did the rest, with assembly done in classrooms. I like that the fin cans came in orange, yellow and blue. Finished rockets sat on launch rods fixed to wooden pallets, and the pallet racks were wired for one shared electrical ignition moment. A single motor ignition test ran outside on a wooden pallet first, then the racks went into a semi-truck and out to a wide, dry grass field, set down in rows stretching into the distance.
The launch itself is the detail that stands out: the array threw up a dense white smoke wall as thousands of rockets climbed and drifted back down under their streamers.
One point stays open. Some rockets failed to ignite, and adjudicators walked the racks afterwards to count every unlaunched one against the failure threshold the record allows. The total came in far below that limit, and on-screen text at the end announced a new world record of 4231 rockets. I would still be curious to learn which part of the ignition chain caused the misses.
Project by College Leeuwenhorst. Watch it on their YouTube channel: