The journals Science and Nature seem like they are basically the flagship journals for most of the hard sciences, such as biology, physics, or chemistry. Is there an equivalent high-caliber journal for general engineering? For example, if somebody discovers a new algorithm that revolutionizes robotics (and is so profound that it might be of interest to mechanical engineers or computer engineers as well), is there an appropriate outlet for such a thing?
For your example, perhaps they'd publish through a robotics journal, or an algorithms journal, or a control theory journal. If it is so profound that it could influence various fields, it would trickle from the individual focus of the project towards other fields over time. Individual specific fields do have their own "flagship journals", e.g. "Experiments in Fluids" for fluid mechanics. Perhaps you could use journal rankings across fields but there's no unilateral engineering journals I'm aware of, which I have ever read. I mean, Nature and Science do publish engineering-related research, there isn't a hard dividing line between science and engineering at that level.