This isn't convincing. The turbofan is a good idea because the propulsive efficiency is better than a turbojet. The Stipa is a ducted fan, but the resemblance to a turbofan is superficial.…
This isn't convincing. The turbofan is a good idea because the propulsive efficiency is better than a turbojet. The Stipa is a ducted fan, but the resemblance to a turbofan is superficial.…