Hello! My "Autodragon" flies on a quantum engine that runs on a cold fusion reactor. Filling 1 kg of nickel into the CNS reactor allows you to travel 10 million kilometers without refueling, this is 25 distances to the moon. With such an engine, there is no flame of fire from nozzles and smoke too. Maximum the speed of a spacecraft with a quantum engine can reach 1000 km/s versus 18 km/s for a rocket. But most importantly, having a long thrust impulse, a spacecraft with a thruster can move with acceleration. Today, jet engines (RD) of spacecraft have reached their technical limit. For 50 years, the time impulse of their work has been increased from 220 seconds (V-2) by only 2 times to 450 seconds (Proton). The momentum of quantum engines is not hundreds of seconds, but years. A rocket with a RD weighing 100 tons at best carries 5 tons (5%) of payload. A device with a quantum engine of 100 tons will have a quantum engine with a reactor of 10 tons, that is, the payload is 90 tons, this is already 90% versus 5% for RD. Excerpts from an interview with Russian scientist, winner of the Russian Government Prize Vladimir Leonov, the rest is visible from concept art https://render.ru/xen/threads/koncept-art-cyber-warfare.183450/