Hurricane II P3269 - Flight test results?

[Simon Thomas]

Does anyone have the flight test data for Hurricane II P3269 with Merlin XX C10225?
The data was used by Hooker & Hawkers in Hooker's supercharger paper to generate the curves. The paper has a graph of the RR and Hawkers results - it would be interesting to compare to the actual flight test data.

 

[Zurger6]

For an historically interesting flight test see this:

Measurements of the Flying Qualities of a Hawker Hurricane Airplane - NASA Technical Reports Server (NTRS)

ntrs.nasa.gov

Cheers.

 

[YavorD]

It looks like the graph in question is close to the Merlin XX data for high speed blower, 9 psig, as shown on another graph Merlin XX, Neil Stirling, WWII aircraft performance.
According to my own analysis, the power curve is a good match for the performance above 20000 feet as given in the Boscombe Dawn test report dated October 21, 1941, Hurricane II B Z3564.

The Merlin XX power curve is markedly different from another chart provided by Neil Stirling on this forum [file P1010987 from a set of Engine charts late 1930's]. For the high speed supercharger gear the 3000 rpm power curve is shifted 100 bhp down in comparison with the chart shown below.