Looking at dimensional drawings of the Derwent dam , the towers are around 65 feet high. On the NZBCA Lanc the distance from the cockpit rim to the bottom of the propeller arc, it is about 20 feet , so Dick had 45 feet under him as he cleared the dam face. I would be happy with that.
I agree, its really great to be able to view such history.
I really like the last drawing Caricatures of the two Lancasters - really well done.
Slightly off topic but a mention anyway, Sir Willoughby-Norrie GG in the above photos and programme, I found out from my Aunt (Dad's Sister) that through my Paternal Grandfather, I'm related to him. Neat to see two pieces of New Zealand history on here.
Some really great stuff on this thread. Could not help but notice that at least two of the Lancasters shown on Peter Wheeler's post of 22nd July show clearly the difference between the two types of propellers fitted to Lancs, the earlier "toothpicks" and the later "paddle blades". When 75 (NZ) Sqdn was re-equipped with Lancs, the "paddle blades" seemed to have superseded the earlier type on the production line, but the photo of ED 906 (first photo on this thread, and presume photographed when delivered to the MU for disposal in 1946 as per the caption), shows the toothpicks still fitted, which would seem to indicate that those aircraft with the earlier props were not necessarily retro-fitted with the paddle blades as a matter of course. All the dam raid aircraft were "toothpickers", something seemingly missed by certain manufacturers of model aircraft kit who decided to celebrate the aircraft involved in this famous action. David D
Absolutely fantastic posts and images, Peter; very evocative.
Or was it just a way to make the same engine more efficient?
Broader chord blades equals more thrust for a given power output. The blades were interchangeable; they had the same butt and could easily be swapped between hubs. Lancasters (and Mossies, Beaufighters and so on) had De Havilland Hydromatic propellers, licence built Hamilton Standard props as standard on most American large aircraft of WW2, but British ones had different splines on the prop shaft, otherwise they were the same, with variations in detail between some aircraft.