这项比赛要求火箭手们将一个生鸡蛋发送到接近750英尺的高空，要求飞行时间持续在48秒到50秒之间，然后把鸡蛋完好无损带回地面。
The contest required rocket kids to send a raw egg into the sky , as close to 750 feet altitude as possible , in a flight lasting between 48 and 50 seconds - and bring the egg safely back to earth .
火箭手