On a similar theme I remember a trial on Harrier GR5s being mentioned – head on, the intakes are almost always shaded and look like a large dark blobs. If my failing memory serves me right there was a trail to add lights inside the intakes to make them as bright as the background and therefore help them blend in – anyone remember this?
I might remember quite a few snippets! A bit of simulation at a well known contractor on the South Coast too.
Proved too expensive to consider an operational fit