Absolutely, but there's only so much I could fit into the title without it becoming a long list of things. I seem to remember that he had something to do with the clutch system the autogyros now use.

He was more than just a stunt pilot, he was a great advocate of the autogyro.  As a fixed wing flyer I will always remember and respect him especially for his contributions in that field (such as his offset gimbal rotor head).

**edit**: [Great tribute thread here](http://www.pprune.org/aviation-history-nostalgia/273030-mr-autogyro-legendary-ken-wallis.html)

Wg Cdr Ken Wallis, WWII and James Bond Stunt Pilot, Dies Aged 97