Data of Spitfire Rotol Propeller Performances

[BiomimeticWings]

Hey Guys,

I am searching for data (like offical testing results or handbooks, anything quantifieable) about the performance of Spitfire Propellors. More specifically the one used in the Seafire Mk. 47, the Spitfire Mk. 22 or the Spitfire Mk. IX. The Propellors used as I have read amongst others in this forum are propellors with the blades:
- DRG. RA.10129 (Spitfire Mk 22/24)
- DRG. RA.10270 (Seafire Mk 47)
- and the Mk. IX three bladed ones (havent found Information of exact types yet)

The picture below is an example of the kind of information I am looking for in particular.
This would be the propeller efficiency at different pitch angles at a given speed. (η_P = propellor efficiency, J = degree of advancement? (translated from german "Fortschrittsgrad")). I am sure the royal airforce has recorded data of that sorts of aircraft and propellor performance, however I coul not find any in scientific papers.

So in short:
If anybody had some information or access to handbooks, data or something similar about the propellors performance at certain pitches and speeds, as well as optimal or required revolutions at takeoff, travel, etc. and would be willing to share their information, that would help a lot.

Tank you and have a great day!

 

[Aeroweanie]

ARC R&M-2083 The Application of the Calculus of Variations to Propeller Design With Particular Reference to Spitfire VII With Merlin 61 Engine
ARC R&M-2092 The Determination of Propeller Power Coefficients by Flight Tests on a Spitfire Vc Aircraft
ARC R&M-2357 24-ft. Tunnel Tests on a Rotol Wooden Spitfire Propeller. Test Results, and Data for Single Radius Calculations

 

[ThomasP]

re

- and the Mk. IX three bladed ones (havent found Information of exact types yet)

I may be wrong, but I do not think the production Spit Mk IX ever used 3-blade propellers.

The Spitfire Mk III airframe used for the prototype Mk IX was fitted with a 4-blade Rotol prop.

 

[Wurger]

IIRC the majority of Mk.IX Spitfires were equipped with a four-bladed Rotol constant-speed 10 ft 9 in diameter propeller. Some of the very first Mk.IX aircraft often converted from Mk.V airframes could utilize three-bladed Rotol propeller units, though these were quickly phased out for the four-bladed versions to improve high-altitude performance.

 

[Simon Thomas]

These pages from "Airplane Performance, Stability & Control" Perkins & Hage, 1949 provides some general guidance on prop performance that include "dual rotation" propellers. It might be of some help for the Seafire 47 & Spitfire 22 contra-rotation props.