when the H2 was launched it was widely rumoured that the chirping noise was due to the tips of the supercharger breaking the sound barrier, something that Spitfires had trouble with at the end of their development with the tips of the propeller doing the same thing and causing handling problems and shake.
My question that is far to complicated for me is either, How big a diameter would the supercharger compresser wheel need to be to suffer this problem at the standard red line ? or how many RPM would the compresser wheel need to do using the standard diameter to really break the sound barrier ?
Yes I'm aware that the noise is in reality a valve blowing off unwanted boost pressure on a closed throttle.
Do we have a mathematical genius on this site ? And just for the record its maths not math !
My question that is far to complicated for me is either, How big a diameter would the supercharger compresser wheel need to be to suffer this problem at the standard red line ? or how many RPM would the compresser wheel need to do using the standard diameter to really break the sound barrier ?
Yes I'm aware that the noise is in reality a valve blowing off unwanted boost pressure on a closed throttle.
Do we have a mathematical genius on this site ? And just for the record its maths not math !