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M.45 like RB.153 doesn't weigh as heavy as similar sized turbojets let alone the likes of Atar, Avon, Sapphire and J79.It is a step towards the RB.199 and in terms of power-to-weight ratio is vastly superior to older engines.So much so RB.153 was examined as a replacement for Avons in new build Lightnings. With no drop in performance.Furthermore when we look at reheated thrust, despite it's similarities with dry thrust turbojets, the combination of convergent/divergent exhaust nozzles and higher temperature/velocity exhaust gases. Mean these engines in reheat deliver higher performance than dry thrust turbojets of such similar power.It's only in comparison between similar sized turbojets and turbofans that we see the fans have superior s.f.c and the jets higher thrust or attitude and speed performance.
M.45 like RB.153 doesn't weigh as heavy as similar sized turbojets let alone the likes of Atar, Avon, Sapphire and J79.
It is a step towards the RB.199 and in terms of power-to-weight ratio is vastly superior to older engines.
So much so RB.153 was examined as a replacement for Avons in new build Lightnings. With no drop in performance.
Furthermore when we look at reheated thrust, despite it's similarities with dry thrust turbojets, the combination of convergent/divergent exhaust nozzles and higher temperature/velocity exhaust gases. Mean these engines in reheat deliver higher performance than dry thrust turbojets of such similar power.
It's only in comparison between similar sized turbojets and turbofans that we see the fans have superior s.f.c and the jets higher thrust or attitude and speed performance.
