 The NO.4 augmenter was mounted behind the engine, drawing fresh air through ducts surrounding the engine.Power was boosted even further by supplying the air to the world's first "reheat jetpipe" or afterburner which was actually a very early athodyd or ramjet.The hope was that this combination of the W.2/700, turbofan augmenter and re-heat/ramjet would produce the required power for the proposed 1,000 mph aircraft.