Hi
Another small book, from 1943, by W Hazell is 'Understanding Aircraft Components, by Question and Answer', has some info relating to Constant-Speed airscrews, extract below:
Hi
As for the 'Types' of airscrew and the terms for them these extracts from a mid-1940s book, 'Aeronautical Engineering, A practical guide for everyone connected with the Aircraft Industry' edited by R A Beaumont, may be of use:
I never thought of the effects of outward centrifugal forces acting on props, let alone thirty tons of it. I have thought about variation of speeds along the length of the blade and was amazed they held together. This makes it more impressive.
When the big 4 blade props from the C-119 were disassembled, the appx. 1/2 inch balls, which held the blade in the hub, were no longer perfectly round but had small, flat facets on the surface. That's what a 3350 can do.