avro

In AJ Jackson's book Avro Aircraft since 1908 reference is made to a predecessor design to the CF-105 Arrow that would have used two stacked turbojet engines (like the EE Lightning), a swept delta wing and conventional tailplane. This is the first I've heard of such a proposal and am wondering...

Lancaster High Speed Mail Plane (pre Lancastrian?) I Not sure if this counts as secret, or cancelled, or evolved? Most of the reference to the Lancaster High Speed Mail Plane refer to the Lancastrian. however the following book, on Page 41 has a small drawing of an alternative design, now I...