Jim Floyd:RAeS Lecture
The Fourteenth British Commonwealth Lecture
The Canadian Approach to All-Weather
the time that the tests were being made on the notch
and leading edge extension for pitch-up we were following
very closely the work being done on the F.102 with
regard to a reduction in induced drag by drooping
the wing leading edge, and also the work that was
going on at Avro Manchester on the Vulcan. They were
drooping the leading edge to increase the buffet
boundary by preventing leading edge breakaway at
high angles of attack.
Another peculiarity of the CF-105 wing is the 4deg anhedral. This was established entirely to reduce the length of the undercarriage, and has no appreciable aerodynamic effect or significance.
high wing arrangement was adopted because of the
greater flexibility with this layout. For example,
it allowed a relatively simple engine installation
and any changes in engines and armament can be made
without affecting the basic wing structure, which
is not always the case with an integrated wing-fuselage
great deal of theoretical work was done on the application
of Area Rule to the CF-105 and during the early design
stages certain changes were incorporated in the aircraft
to take advantage of the results of our area rule
CF-105 is undoubtedly the most " re-engined" of
any aircraft at this stage of development since,
one by one the engines slated for the project fell
by the wayside. However, I will not attempt to go
into the history of the " thousand and one " installations
but will deal mainly with the final (?) installation
on the production Mark 2. The first five aircraft
are fitted with Pratt and Whitney J.75 engines, and
the sixth aircraft is the first Mark 2 with Orenda
fire protection, the critical compartments containing
the fuel system, and so on, are enclosed by titanium
shrouds and stainless steel insulated blankets.
intake duct, the by-pass gills open due to ram intake
pressure, and allow the air to by-pass over the engine.
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