Vickers Viscount engine geometry
Hoping an engineer with intimate knowledge of the Vickers Viscount might be able to clarify a little confusion around the engine angle.
All the Vickers drawings seem to indicate the engine centrelines are parallel to the fuselage waterline, however, nowhere in the documentation I have found do they actually specify the engine c/l angle.
Looking closely at photos it appears the engines have a negative angle of somewhere around 0.5 to 1.0 degrees on most models. Some later aircraft appear to have the engine parallel to the fuselage waterline, such as V 808 (G-BBDK) and V 806 (G-AOGY).
I can’t work out if this is an optical illusion created by the shape of the cowls, or whether there was an angle to it.
I am currently working on a detailed drawing of the Viscount 700 & 800.
Hoping someone can set me straight.
Juanita