[sci.military] Spitfire Prop. Blades

yaniv%mush.huji.ac.il@CUNYVM.CUNY.EDU (ran el-Yaniv) (08/11/90)

From: ran el-Yaniv <yaniv%mush.huji.ac.il@CUNYVM.CUNY.EDU>

	Mea Culpa! There WERE wartime Spitfires with more than 3 propeller
blades...

	Model XIV, two stage Griffon engine, 2,050hp Mk 65, five blades.

	yaniv

ntaib@silver.ucs.indiana.edu (Nur Iskandar Taib) (08/15/90)

From: ntaib@silver.ucs.indiana.edu (Nur Iskandar Taib)
The last Spitfires with three blade props were
the Mk. Vs with the single-stage Merlins. The 
Mk. VIIIs, IXs and XVIs with the two stage Merlins,
and possibly the Mk. XIIs with the single-stage 
Griffons had four bladed props. Most Griffon
equipped Spitfires had five blade props, the 
late model XXIVs and Seafire 47s had the dual 
three-blade (six total) contra-rotating props. 
The Spiteful (the first prototype had a Spitfire
Mk. XIV fuselage) used a five blader. 

The hottest Mustang on the Unlimited racing circuit
was the Red Baron, which was fitted with a two-
stage Griffon and the contra-rotating props. It
crash-landed in a field of boulders after engine 
failure.

Incidentally, the Griffon turned the "wrong way",
so the five bladed props were pitched in reverse.
The same was true for the engine used in the Hawker
Sea Fury. On takeoff, the pilot had to give full
rudder in the opposite direction from "normal".

Read Jeffrey Quill's book. He was Supermarine's
test pilot.