Stability and Control characteristics of the Early Mark Spitfires

[Crumpp]

Exactly. And it was the only unstable oscillation with the Spitfire.

Did you read the NACA report? Do you need me to highlight the part about long period oscillation is not considered????

Do you understand that none of the Operating Note warnings or NACA measurements include anything about long period oscillation.

The RAE measured stick free oscillation. The NACA measured stick fixed.

In otherwords, the early mark Spitfire was not a hands off aircraft. Left to its own devices, it would eventually destroy itself without pilot input in conditions it was divergent.