Frankly, the six bleed ducts are superchargers, the pressure is created mechanically, something a ramjet does NOT do. Any additive pressure to the gas path that is created mechanically is not RAM. By definiton.
PW did not "solve" anything by routing bleed to the ejector, neither do they create a ramjet.
"Hybrid" predates automotive usage by fifty years....
Turbo Ramjet is fine, not difficult at all.
Nomenclature is not a problem, but know this, the standard definition of a Ramjet engine is one that does not rely on mechanical compression of air. The air routes into a combustion chamber directly, fuel is added and ignited, and the exhaust creates thrust.
You do a great disservice to Pratt, Whitney (and the ampersand) by denigrating the J58 with terms that imply it is a ramjet. it simply is not.
The Ramjet is the simplest concept in aviation, one of. The J58 is a masterpiece of ingenuity and engineering. I used to pass one in the hall on my way to work (it was on a stand), and got to speak to pilots of the Blackbird....
Your usage of all the terms is just fine, to each his own.
" In a ramjet, the high pressure is produced by "ramming" external air into the combustor using the forward speed of the vehicle. The external air that is brought into the propulsion system becomes the working fluid, much like a turbojet engine. In a turbojet engine, the high pressure in the combustor is generated by a piece of machinery called a compressor. But there are no compressors in a ramjet. Therefore, ramjets are lighter and simpler than a turbojet. Ramjets produce thrust only when the vehicle is already moving; ramjets cannot produce thrust when the engine is stationary or static. Since a ramjet cannot produce static thrust, some other propulsion system must be used to accelerate the vehicle to a speed where the ramjet begins to produce thrust. The higher the speed of the vehicle, the better a ramjet works until aerodynamic losses become a dominant factor". .....NASA Glenn Research Center
bog simple....
great respect......
Last edited by Lyman; 30th Jan 2013 at 01:22.