Interesting thread, but I don't think it quite tells the whole story.
I worked for Rolls Royce from about 1979 to 1990 and during that period spent time at a military establishment testing a supersonic harrier engine. It never made it to production, or flew to my knowledge, but it was running in a modified harrier body that was mounted on a hydraulic ram on a huge gantry that allowed the aircract to 'take off', and 'land'. The engine used plenum chamber burning - essentially mounting fuel manifolds in the plenums (both forward and aft if I remember correctly) before the nozzles and injecting fuel. I remember it making a lot of noise, but having lots of problems igniting the fuel air mix, which resulted in pouring copious quantities of kerosene on the ground around the engine when it didn't light