Originally Posted by Upper Air
Obviously, Hazelnut 39 if you apply the ISA temp of 15*C then K will be plus 15 higher - duh.
Sorry, you missed the point of my post, which was twofold: First to point out that Jane's sonic speed was for 273 K, not 288.15 K (hence the title: Confusion?), and second that the standard sealevel temperature is 15 °C per definition, not 15.2. Thought that would be obvious.
regards,
HN39