... Would the Tyne be ready by 1956 though?
In the RW, not really. A few examples ...
The Vickers Type 950
Vanguard prototype first flew in late January 1959 with 4,985 shp
Tyne RTy.1 (Mk. 506) engines.
The Canadair CL-44-6
Yukon first flew in mid-November 1959 with 5,730 shp
Tyne RTy.12s (Mk.515/10s).
The 6,100 shp
Tyne RTy.20 (Mk.21) didn't fly until October 1961.
Cool idea, though
