It's hard to imagine something so small being so loud. No, not toddlers. Or Chihuahuas. But the sound is the first thing you notice as the 1/5-scale replica, radio-controlled A-10 Warthog jet fires up ...

Lilium has begun windtunnel tests of a 40%-scale model of its electric vertical take-off and landing Lilium Jet. Complete with working engines and flap actuators, the model is being used to obtain ...