Having taken up our position on the above definition of this fundamental point, which closes the longstanding discussion between upholders of the airscrew and those of the reaction system just as in earlier days the distinction between impulse and work closed the classic discussion between the followers of Leibnitz and Descartes, we must now admit, without going into details, that this supposed attainment of equal efficiencies cannot be considered easy, if even possible, for the normal speeds of flight. It must also be admitted that a power unit, consisting of engine, compressor and jet, is at first sight a unit more complex, heavier and more bulky than the ordinary engineairscrew unit which has now been reduced to a high degree of simplicity and neatness. There is no doubt at all that in the sphere of the subacoustic velocities the airscrew will reign supreme.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Aug 1, 1932