This is a decent documentary on Rolls Royce that discusses the single crystal blade. I think each one has 18 tons of centrifugal force, and uses a few micron l

This is a decent documentary on Rolls Royce that discusses the single crystal blade. I think each one has 18 tons of centrifugal force, and uses a few micron layer of air to cool it, so running an engine too slow will melt them. Fascinating stuff. https://youtu.be/1Ufd5nDeEK8 https://youtu.be/1Ufd5nDeEK8