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Old 4th Apr 2021, 12:23
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Finningley Boy
Join Date: Dec 2009
Location: Welwyn Garden City
Age: 60
Posts: 1,437
Could Spey Phantom reach mach 2?

During my research for for a current project I came across a report by the RAF which claimed that in trials the spey-engined F-4 could reach, in trial conditions, a maximum speed of 1.9 mach at altitude. The F-4J, its closest J79 engined comparison didn't set the heather of fire either, about 2.04 mach. However, I'm sure at least one ppruner could throw some personal light on such blunt figures.

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