A technical hand-drawn style sketch of a homemade air-powered bottle launcher. A foot presses on a milk jug connected by an air tube to a launcher bottle, with a rocket-shaped projectile inside it, labeled with parts like 'MILK JUG', 'AIR TUBE', 'LAUNCHER BOTTTTLE', and 'FINS'.

A technical hand-drawn style sketch of a plastic air-powered launcher using only a 4-liter milk jug for compressed air. The milk jug is stepped on directly with one foot to generate air pressure, which is delivered through a plastic air tube to a large plastic bottle angled at 45 degrees, serving as the launcher. Inside the launcher is a symmetrical projectile made from two small 200ml plastic bottles joined together front-to-back. The projectile has stabilizing plastic fins at the rear. The entire system is made only of repurposed plastic materials. No mechanical foot pump or metal parts are used. Show a side view with labels for each part: 'Milk Jug', 'Air Tube', 'Launcher Bottle', 'Projectile', 'Fins'. 거기에 추가로 [4L 우유통] ← 밟음 ↓ [뚜껑에 연결된 튜브] → 짧게 ↓ [큰 페트병 발사관] ↓ [안에 넣은 투사체] → 뒤에서 공기 맞고 날아감 See more